{"product_id":"sbc-bbc-v8-chevrolet-hei-distributor-black-cap-billet-aluminium-built-in-ignition-module-coil","title":"SBC BBC V8 Chevrolet HEI Distributor Black Cap Billet Aluminium Built-In Ignition Module \u0026 Coil","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Chevrolet Gen. I small block 262–400ci and Mark IV big block 396–454ci engines\u003c\/strong\u003e - Designed for carburetted, standard-deck applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerful internal 65,000-volt HEI coil\u003c\/strong\u003e - Provides a strong, consistent spark without requiring an external ignition coil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-contained large-cap HEI design\u003c\/strong\u003e - The coil, ignition module, magnetic pickup, cap and rotor are integrated into one distributor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple switched 12-volt connection\u003c\/strong\u003e - No external ignition box, condenser or ballast resistor is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable mechanical and vacuum advance\u003c\/strong\u003e - Allows the ignition curve to be tuned for the engine combination and intended use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-machined billet aluminium housing\u003c\/strong\u003e - Provides accurate fitment, strength and stable distributor operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardened steel internal components and dual-bushing construction\u003c\/strong\u003e - Designed for durability and consistent shaft support.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNot compatible with tall-deck Chevrolet big blocks, LS engines or computer-controlled ignition systems.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHEI Distributor for Chevrolet Small Block and Big Block V8\u003c\/h2\u003e\n\u003cp\u003eThe GASO Peak Performance HEI Distributor is a complete, self-contained ignition upgrade for carburetted Chevrolet Gen. I small block and standard-deck Mark IV big block V8 engines. It combines the ignition coil, high-output ignition module, magnetic pickup, distributor cap and rotor into a single large-cap HEI assembly, eliminating the need for a separate coil, ignition box, condenser or points system.\u003c\/p\u003e\n\u003cp\u003eSuitable for Chevrolet small block engines from 262ci through to 400ci and Mark IV big block engines from 396ci through to 454ci, this distributor offers broad compatibility across classic Chevrolet passenger cars, muscle cars, hot rods, commercial vehicles and performance engine conversions.\u003c\/p\u003e\n\u003cp\u003eAt the centre of the distributor is a powerful internal 65,000-volt HEI coil. The high-output coil provides the spark energy required for dependable ignition across a wide operating range, helping support easier starting, stable idle quality, clean throttle response and consistent combustion under load. This makes the distributor suitable for everything from a largely standard street engine to a modified, higher-compression or performance-oriented carburetted combination.\u003c\/p\u003e\n\u003cp\u003eInstallation is simplified through the integrated HEI design. A full switched 12-volt supply is connected directly to the distributor's battery terminal, while a separate tachometer terminal is available when an electronic tachometer is fitted. No external coil or ignition control box is required.\u003c\/p\u003e\n\u003ch2\u003eEverything You Need Under One Cap\u003c\/h2\u003e\n\u003cp\u003eTraditional points-style ignition systems use several separate components and are subject to contact wear, adjustment changes and timing drift. The GASO HEI distributor replaces the mechanical points arrangement with a maintenance-free magnetic pickup trigger and electronic ignition module.\u003c\/p\u003e\n\u003cp\u003eThe magnetic pickup generates a consistent trigger signal without physical contact between ignition points. This removes the regular points adjustment and replacement associated with older distributor designs while helping maintain more stable ignition timing over extended use.\u003c\/p\u003e\n\u003cp\u003eThe large-cap HEI configuration also increases the spacing between distributor cap terminals. Solid brass cap terminals provide a reliable electrical path from the internal coil and rotor to the spark plug leads, helping deliver consistent spark energy to each cylinder.\u003c\/p\u003e\n\u003ch2\u003e65,000-Volt Internal HEI Coil\u003c\/h2\u003e\n\u003cp\u003eThe internal 65,000-volt HEI coil is designed to provide a strong and dependable spark without the need to mount and wire a separate ignition coil. The integrated coil sits inside the top of the distributor cap, creating a compact, self-contained ignition system with fewer external components and fewer potential wiring connections.\u003c\/p\u003e\n\u003cp\u003eA stronger and more consistent ignition spark can be particularly beneficial when starting a cold engine, operating under increased cylinder pressure or running a modified engine with a larger carburettor, higher compression ratio or more aggressive camshaft.\u003c\/p\u003e\n\u003cp\u003eActual ignition performance will also depend on the engine condition, spark plug type and gap, plug leads, fuel mixture, compression ratio, ignition timing and charging-system voltage.\u003c\/p\u003e\n\u003ch2\u003eAdjustable Mechanical and Vacuum Advance\u003c\/h2\u003e\n\u003cp\u003eThe distributor includes both mechanical and vacuum ignition advance systems. These systems allow ignition timing to change according to engine speed and operating load rather than remaining fixed at the initial timing setting.\u003c\/p\u003e\n\u003ch3\u003eMechanical Advance\u003c\/h3\u003e\n\u003cp\u003eMechanical advance increases ignition timing progressively as engine speed rises. Correct mechanical advance allows the ignition curve to be matched more closely to the engine's compression ratio, camshaft, cylinder heads, fuel quality, vehicle weight and intended RPM range.\u003c\/p\u003e\n\u003ch3\u003eVacuum Advance\u003c\/h3\u003e\n\u003cp\u003eVacuum advance adds ignition timing during light-load and cruising conditions when manifold or ported vacuum is available. When correctly connected and adjusted, vacuum advance can help improve part-throttle response, cruising efficiency and general street drivability.\u003c\/p\u003e\n\u003cp\u003eEngines with heavily modified camshafts, low idle vacuum or specialised competition combinations may require adjustment, restriction or disconnection of the vacuum advance. The correct arrangement should be determined by the engine builder or tuner.\u003c\/p\u003e\n\u003ch2\u003eStrong Billet Aluminium Construction\u003c\/h2\u003e\n\u003cp\u003eThe distributor housing is CNC machined from billet aluminium for strength, dimensional accuracy and a precise fit in the engine block. Hardened steel internal components and dual-bushing shaft support help maintain distributor shaft stability and consistent rotor alignment during operation.\u003c\/p\u003e\n\u003cp\u003eAccurate shaft support is important because excessive movement can affect the relationship between the magnetic pickup, reluctor, rotor and distributor cap terminals. The rigid housing and supported shaft design help maintain stable operation throughout the engine's operating range.\u003c\/p\u003e\n\u003ch2\u003ePerformance and Drivability Benefits\u003c\/h2\u003e\n\u003cp\u003eReplacing an old points distributor, worn factory electronic distributor or incomplete aftermarket ignition system with a new self-contained HEI distributor can provide several practical benefits when the engine is correctly wired and tuned.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStrong, consistent spark throughout the normal engine operating range\u003c\/li\u003e\n\u003cli\u003eEasier cold and hot starting\u003c\/li\u003e\n\u003cli\u003eImproved idle consistency\u003c\/li\u003e\n\u003cli\u003eCleaner throttle response\u003c\/li\u003e\n\u003cli\u003eReduced maintenance compared with mechanical points\u003c\/li\u003e\n\u003cli\u003eMore stable ignition timing\u003c\/li\u003e\n\u003cli\u003eAdjustable mechanical and vacuum advance\u003c\/li\u003e\n\u003cli\u003eNo separate ignition coil required\u003c\/li\u003e\n\u003cli\u003eNo external ignition control box required\u003c\/li\u003e\n\u003cli\u003eNo condenser or points adjustment required\u003c\/li\u003e\n\u003cli\u003eSimplified engine-bay wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe final result will depend on correct installation, sufficient electrical supply, suitable spark plugs and leads, appropriate initial timing, the total mechanical advance and the rate at which the advance is introduced.\u003c\/p\u003e\n\u003ch2\u003eCompatible Chevrolet Engines\u003c\/h2\u003e\n\u003ch3\u003eChevrolet Gen. I Small Block V8\u003c\/h3\u003e\n\u003cp\u003eCompatible with carburetted Chevrolet Gen. I small block V8 engines using the conventional rear-mounted Chevrolet distributor arrangement.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e262ci\u003c\/strong\u003e — 4.3 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e265ci\u003c\/strong\u003e — 4.3 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e267ci\u003c\/strong\u003e — 4.4 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e283ci\u003c\/strong\u003e — 4.6 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e302ci\u003c\/strong\u003e — 4.9 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e305ci\u003c\/strong\u003e — 5.0 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e307ci\u003c\/strong\u003e — 5.0 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e327ci\u003c\/strong\u003e — 5.4 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e350ci\u003c\/strong\u003e — 5.7 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e400ci\u003c\/strong\u003e — 6.6 litres\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis includes many standard and modified small block combinations, such as 350-based stroker engines, provided the engine retains the conventional Gen. I Chevrolet distributor location and uses a compatible distributor drive gear.\u003c\/p\u003e\n\u003ch3\u003eChevrolet Mark IV Big Block V8 — Standard Deck\u003c\/h3\u003e\n\u003cp\u003eCompatible with carburetted, standard-deck Chevrolet Mark IV big block V8 engines.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e396ci\u003c\/strong\u003e — 6.5 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e402ci\u003c\/strong\u003e — 6.6 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e427ci\u003c\/strong\u003e — 7.0 litres\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e454ci\u003c\/strong\u003e — 7.4 litres\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis distributor is not suitable for tall-deck Chevrolet truck big blocks, including tall-deck 366ci and 427ci applications.\u003c\/p\u003e\n\u003ch2\u003eCommon Vehicle Applications\u003c\/h2\u003e\n\u003cp\u003eDepending on the engine, engine conversion, intake manifold, firewall clearance and surrounding components, this distributor may be suitable for carburetted Chevrolet V8 applications found in vehicles including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChevrolet Camaro\u003c\/li\u003e\n\u003cli\u003eChevrolet Chevelle\u003c\/li\u003e\n\u003cli\u003eChevrolet Malibu\u003c\/li\u003e\n\u003cli\u003eChevrolet El Camino\u003c\/li\u003e\n\u003cli\u003eChevrolet Nova\u003c\/li\u003e\n\u003cli\u003eChevrolet Impala\u003c\/li\u003e\n\u003cli\u003eChevrolet Bel Air\u003c\/li\u003e\n\u003cli\u003eChevrolet Biscayne\u003c\/li\u003e\n\u003cli\u003eChevrolet Corvette\u003c\/li\u003e\n\u003cli\u003eChevrolet Monte Carlo\u003c\/li\u003e\n\u003cli\u003eChevrolet C10, C20 and C30 trucks\u003c\/li\u003e\n\u003cli\u003eChevrolet K-series four-wheel-drive trucks\u003c\/li\u003e\n\u003cli\u003eChevrolet Blazer\u003c\/li\u003e\n\u003cli\u003eChevrolet Suburban\u003c\/li\u003e\n\u003cli\u003eEquivalent GMC C\/K trucks and utility vehicles\u003c\/li\u003e\n\u003cli\u003eHot rods and custom vehicles using Chevrolet SBC or BBC engines\u003c\/li\u003e\n\u003cli\u003eStreet machines and engine-converted vehicles\u003c\/li\u003e\n\u003cli\u003eCarburetted race and performance applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVehicle listings are provided as a general application guide only. Chevrolet vehicles were produced with numerous engine, ignition and accessory combinations, and many older vehicles have since undergone engine conversions or other modifications. Confirm the installed engine family, electrical system, distributor drive arrangement and physical clearance before ordering.\u003c\/p\u003e\n\u003ch2\u003eIdeal for Street, Restoration and Performance Builds\u003c\/h2\u003e\n\u003cp\u003eThe broad SBC and BBC compatibility makes this HEI distributor suitable for a wide range of Chevrolet engine projects.\u003c\/p\u003e\n\u003ch3\u003eStandard and Mild Street Engines\u003c\/h3\u003e\n\u003cp\u003eOn a standard or mildly modified 283, 305, 327 or 350, the HEI system provides a practical replacement for an ageing points distributor or worn original electronic distributor. The integrated design simplifies the ignition system while retaining vacuum advance for normal street use.\u003c\/p\u003e\n\u003ch3\u003eStroker and Modified Small Blocks\u003c\/h3\u003e\n\u003cp\u003eThe distributor can also be used with many carburetted stroker and performance small block combinations, including common 350-based builds, provided the engine uses the conventional Gen. I distributor mounting arrangement and the distributor gear material is suitable for the camshaft.\u003c\/p\u003e\n\u003ch3\u003eBig Block Street and Performance Engines\u003c\/h3\u003e\n\u003cp\u003eFor standard-deck 396, 402, 427 and 454 Mark IV engines, the high-output internal coil and adjustable advance systems make the distributor suitable for street, muscle-car, hot-rod and performance applications. Higher-compression engines and combinations using aggressive camshafts should be professionally tuned to establish the correct initial timing, mechanical advance curve and total timing.\u003c\/p\u003e\n\u003ch3\u003eRestoration and Restomod Applications\u003c\/h3\u003e\n\u003cp\u003eThis distributor is also an effective upgrade for restorations and restomods where ease of maintenance and dependable electronic ignition are more important than retaining a visually original points-style ignition system. The black cap provides a restrained appearance that suits a wide range of engine-bay styles.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eProduct type\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eLarge-cap HEI electronic distributor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eBrand\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eGASO Peak Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eEngine compatibility\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eChevrolet Gen. I small block and standard-deck Mark IV big block V8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eFuel-system compatibility\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eCarburetted applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eTrigger style\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eMagnetic pickup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eIgnition module\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eIntegrated high-output HEI module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eCoil\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eInternal HEI coil included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eCoil output\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003e65,000 volts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eOperating voltage\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003e12 volts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eExternal coil required\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eExternal ignition box required\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eAdvance type\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eMechanical and vacuum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eCap style\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eLarge-cap HEI, male terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eCap colour\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eCap terminals\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eSolid brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eHousing material\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eCNC-machined billet aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eShaft support\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eDual-bushing construction\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eDistributor gear material\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eMechanical tachometer drive\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eElectronic tachometer terminal\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eSlip collar\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; padding: 8px; border: 1px solid #dddddd;\"\u003eMarine approved\u003c\/th\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #dddddd;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003c\/h2\u003e\n\u003ch2\u003eElectrical Requirements\u003c\/h2\u003e\n\u003cp\u003eThis distributor is designed to operate from a full switched 12-volt electrical supply. The main ignition feed must provide battery voltage while the ignition switch is in both the start and run positions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse a full switched 12-volt ignition supply.\u003c\/li\u003e\n\u003cli\u003eDo not connect the distributor through a ballast resistor.\u003c\/li\u003e\n\u003cli\u003eDo not use the original resistance wire from a points-style ignition system.\u003c\/li\u003e\n\u003cli\u003eDo not connect the distributor to a reduced-voltage coil feed.\u003c\/li\u003e\n\u003cli\u003eEnsure the distributor receives power while the engine is cranking and while it is running.\u003c\/li\u003e\n\u003cli\u003eUse appropriately sized automotive wire and secure electrical terminals.\u003c\/li\u003e\n\u003cli\u003eConfirm that the engine and battery have clean, low-resistance earth connections.\u003c\/li\u003e\n\u003cli\u003eUse the separate tachometer terminal only for a compatible electronic tachometer signal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlthough commonly described as a one-wire HEI distributor, this refers to the single switched 12-volt wire required to operate the ignition system. A second connection will be required when an electronic tachometer is used.\u003c\/p\u003e\n\u003ch2\u003eImportant Distributor Gear Compatibility\u003c\/h2\u003e\n\u003cp\u003eThe supplied steel distributor gear is generally compatible with many conventional cast iron hydraulic and solid flat-tappet camshafts. It must not be assumed to be suitable for every aftermarket camshaft.\u003c\/p\u003e\n\u003cp\u003eRoller camshafts and specialised billet camshafts may require a compatible melonised, bronze, composite or other manufacturer-specified distributor gear. Using the wrong gear material can result in rapid wear or damage to the distributor gear and camshaft drive gear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlways consult the camshaft manufacturer or engine builder to confirm the required distributor gear material before installation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eInstallation Information\u003c\/h2\u003e\n\u003cp\u003eDistributor installation affects engine timing and must be performed carefully. Incorrect installation can prevent the engine from starting or may result in backfiring, poor performance, detonation or engine damage.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConfirm that the engine is a compatible Chevrolet Gen. I small block or standard-deck Mark IV big block.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery before beginning installation.\u003c\/li\u003e\n\u003cli\u003eBring the engine to top dead centre on the compression stroke for cylinder number one.\u003c\/li\u003e\n\u003cli\u003eNote the position of the existing distributor body and rotor before removal.\u003c\/li\u003e\n\u003cli\u003eConfirm that the supplied distributor gear is compatible with the camshaft.\u003c\/li\u003e\n\u003cli\u003eApply a suitable high-quality engine assembly lubricant or gear lubricant to the distributor gear before initial installation.\u003c\/li\u003e\n\u003cli\u003eInstall the distributor while correctly engaging the camshaft gear and oil-pump drive.\u003c\/li\u003e\n\u003cli\u003ePosition the distributor body to provide adequate cap, firewall, intake-manifold and vacuum-canister clearance.\u003c\/li\u003e\n\u003cli\u003eConnect a full switched 12-volt supply to the distributor battery terminal.\u003c\/li\u003e\n\u003cli\u003eConnect the electronic tachometer to the tachometer terminal when required.\u003c\/li\u003e\n\u003cli\u003eInstall HEI-compatible spark plug leads in the correct Chevrolet firing order.\u003c\/li\u003e\n\u003cli\u003eStart the engine and set the initial ignition timing using a timing light.\u003c\/li\u003e\n\u003cli\u003eCheck the mechanical advance, total timing and vacuum advance before driving the vehicle under load.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe distributor gear must be lubricated during initial installation. Do not install or operate the distributor with a dry gear.\u003c\/p\u003e\n\u003ch2\u003eLarge-Cap HEI Clearance\u003c\/h2\u003e\n\u003cp\u003eThis is a large-cap HEI distributor with the ignition coil mounted inside the cap. It requires more physical space than many factory points distributors and small-cap electronic distributors.\u003c\/p\u003e\n\u003cp\u003eBefore ordering, check the available clearance around the rear of the intake manifold, firewall, air cleaner, carburettor linkage, fuel lines, wiring, heater components and other engine-bay accessories. Clearance can vary significantly in engine-converted vehicles, hot rods and vehicles fitted with non-standard intake manifolds or engine mounts.\u003c\/p\u003e\n\u003ch2\u003eSpark Plug Leads\u003c\/h2\u003e\n\u003cp\u003eThe distributor uses male HEI-style cap terminals. Spark plug leads must have compatible female HEI-style distributor boots and terminals. Leads designed only for an original points-style female distributor cap may not connect correctly.\u003c\/p\u003e\n\u003cp\u003eUse good-quality suppression-type ignition leads that are suitable for a high-output HEI system. Route the leads away from exhaust components, sharp edges and moving parts, and separate adjacent leads where necessary to reduce the possibility of crossfire.\u003c\/p\u003e\n\u003ch2\u003eChevrolet V8 Firing Order\u003c\/h2\u003e\n\u003cp\u003eThe conventional Chevrolet Gen. I small block and Mark IV big block firing order is:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1-8-4-3-6-5-7-2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDistributor rotor rotation is clockwise when viewed from above. Always confirm the firing order required by the specific camshaft and engine combination, as certain specialised camshafts may use an altered firing order.\u003c\/p\u003e\n\u003ch2\u003eNot Compatible With\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eChevrolet 366ci tall-deck big block truck engines\u003c\/li\u003e\n\u003cli\u003eChevrolet tall-deck 427ci truck engines\u003c\/li\u003e\n\u003cli\u003eOther tall-deck Chevrolet big block combinations\u003c\/li\u003e\n\u003cli\u003eChevrolet LS-series engines\u003c\/li\u003e\n\u003cli\u003eComputer-controlled ignition systems\u003c\/li\u003e\n\u003cli\u003eFactory electronic fuel-injection systems requiring ECU-controlled ignition timing\u003c\/li\u003e\n\u003cli\u003eApplications requiring a distributor-mounted governor\u003c\/li\u003e\n\u003cli\u003eApplications requiring a mechanical tachometer drive\u003c\/li\u003e\n\u003cli\u003eEngines requiring a slip-collar distributor\u003c\/li\u003e\n\u003cli\u003eSix-volt electrical systems\u003c\/li\u003e\n\u003cli\u003eElectrical systems that supply reduced voltage through a ballast resistor or resistance wire\u003c\/li\u003e\n\u003cli\u003eGenerator-equipped electrical systems that cannot provide a suitable stable 12-volt supply\u003c\/li\u003e\n\u003cli\u003eMarine applications requiring an ignition-protected or marine-certified distributor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMarine Use Warning\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis distributor is not approved for marine use.\u003c\/strong\u003e Marine engine compartments can contain fuel vapour, and marine ignition components must be specifically designed and certified to reduce ignition risk. Do not install this distributor in a boat or other application requiring ignition-protected marine electrical equipment.\u003c\/p\u003e\n\u003ch2\u003eWhat Is Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGASO Peak Performance large-cap HEI distributor\u003c\/li\u003e\n\u003cli\u003eInternal 65,000-volt HEI ignition coil\u003c\/li\u003e\n\u003cli\u003eIntegrated high-output ignition module\u003c\/li\u003e\n\u003cli\u003eMagnetic pickup trigger assembly\u003c\/li\u003e\n\u003cli\u003eBlack HEI distributor cap with male brass terminals\u003c\/li\u003e\n\u003cli\u003eRotor\u003c\/li\u003e\n\u003cli\u003eVacuum advance unit\u003c\/li\u003e\n\u003cli\u003eSteel distributor gear\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSpark plug leads, spark plugs, hold-down clamp, electrical wiring, timing light and installation tools are not included unless specifically shown or stated elsewhere in the listing.\u003c\/p\u003e\n\u003ch2\u003eFitment Checklist\u003c\/h2\u003e\n\u003cp\u003eConfirm all of the following before ordering:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe engine is a Chevrolet Gen. I small block or standard-deck Mark IV big block.\u003c\/li\u003e\n\u003cli\u003eThe engine is carburetted and does not require ECU-controlled ignition timing.\u003c\/li\u003e\n\u003cli\u003eThe big block is not a tall-deck 366ci or tall-deck 427ci truck engine.\u003c\/li\u003e\n\u003cli\u003eThe engine does not use an LS-style ignition system.\u003c\/li\u003e\n\u003cli\u003eThe vehicle has a suitable 12-volt alternator-based electrical system.\u003c\/li\u003e\n\u003cli\u003eA full switched 12-volt supply is available during both cranking and running.\u003c\/li\u003e\n\u003cli\u003eThe ballast resistor or original resistance wire will be bypassed or replaced.\u003c\/li\u003e\n\u003cli\u003eThe steel distributor gear is suitable for the installed camshaft.\u003c\/li\u003e\n\u003cli\u003eThere is sufficient room for a large-cap HEI distributor.\u003c\/li\u003e\n\u003cli\u003eThe spark plug leads have compatible HEI-style female cap terminals.\u003c\/li\u003e\n\u003cli\u003eA mechanical tachometer drive, slip collar or governor is not required.\u003c\/li\u003e\n\u003cli\u003eThe application is not marine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation and ignition timing are recommended.\u003c\/li\u003e\n\u003cli\u003eAlways confirm camshaft and distributor gear compatibility before installation.\u003c\/li\u003e\n\u003cli\u003eLubricate the distributor gear with a suitable high-quality lubricant before initial use.\u003c\/li\u003e\n\u003cli\u003eDo not use a ballast resistor or points-style resistance wire in the distributor power circuit.\u003c\/li\u003e\n\u003cli\u003eEnsure the distributor receives a full switched 12 volts while cranking and running.\u003c\/li\u003e\n\u003cli\u003eCheck total ignition timing and the complete advance curve, not only the initial idle timing.\u003c\/li\u003e\n\u003cli\u003eVerify large-cap distributor clearance before ordering.\u003c\/li\u003e\n\u003cli\u003eVehicle application references are a guide and do not guarantee fitment to every model or modified vehicle.\u003c\/li\u003e\n\u003cli\u003eNot suitable for tall-deck Chevrolet big blocks, LS engines, computer-controlled ignition or marine use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"GASO","offers":[{"title":"Default Title","offer_id":47862042722467,"sku":"GPP-6000","price":279.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/6940\/7395\/files\/GPP-6000-SBC-chev-HEI-distributor-black-img1.jpg?v=1783727485","url":"https:\/\/crankys.com.au\/products\/sbc-bbc-v8-chevrolet-hei-distributor-black-cap-billet-aluminium-built-in-ignition-module-coil","provider":"Cranky's Performance","version":"1.0","type":"link"}