Chevy SB/BB V8 Low-Profile Pro Series Pro Billet Distributor with Crab Cap

• Low-profile billet crab cap designclears tight engine bays on Chevy SBC Gen. I and Mark IV BBC V8 builds

• Mechanical advance with 3 bushings and 4 springs — adjustable timing curve for street and performance applications

• Adjustable slip collar enables precise distributor phasing without rotating the housing

• Ignition box required — compatible with external coil and ignition control module setups.

Low-Profile Pro Billet Distributor with Crab Cap for Chevy Small Block and Big Block V8 Engines

When engine bay space is limited — whether you're running a tall intake manifold, a large carburetor, or a hood clearance-sensitive build — a standard tall-cap distributor can become a problem. This TSP Pro Series Pro Billet distributor is built around a low-profile crab cap design that reduces overall height, giving you the clearance you need without sacrificing ignition performance on Chevy small block Gen. I or Mark IV big block V8 applications.

The machined aluminum housing is precision-built for strength and dimensional accuracy, and the magnetic trigger delivers a clean, consistent signal to your external ignition control box and coil across the full RPM range. Mechanical advance with three tunable bushings and four springs gives you direct control over your total advance curve — a key advantage for performance carbureted builds, engine swaps, and race-oriented street applications where factory-style computer-controlled timing is not part of the equation.

The adjustable slip collar allows you to fine-tune distributor phasing independently of the housing position, a useful feature when working with custom timing setups or performing precision ignition tuning. The steel distributor gear is compatible with cast iron hydraulic and solid flat-tappet camshafts — verify gear material compatibility with your camshaft manufacturer if your build uses a roller or specialty cam profile.

An external ignition control box is required and not included. This distributor produces 35,000+ volts through a compatible external coil. Includes three advance bushings, four advance springs for mechanical advance tuning.

Applications
Compatible with Chevrolet Small Block V8 Gen. I (262, 265, 267, 283, 302, 305, 307, 327, 350, 400 CID) and Chevrolet Big Block V8 Gen. II Mark IV (396, 402, 427, 454 CID). Confirmed common vehicle applications include Chevrolet Camaro, Chevelle, Nova, Impala, C10, Corvette, and GMC C/K trucks. Low-profile crab cap design is intended for engine bays where standard-height distributor caps create clearance conflicts. Will not fit tall deck blocks. Will not fit if a governor is installed.

What engines is this Pro Billet crab cap distributor compatible with?
This distributor fits Chevrolet Gen. I small block V8 engines—262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 CID—and Chevrolet Mark IV big block V8 engines—396, 402, 427, and 454 CID—in standard-deck configurations. It is not compatible with tall-deck big block engines or applications equipped with a governor.

Why would I need a low-profile crab cap distributor instead of a standard cap?
A low-profile crab cap distributor reduces overall distributor height, making it ideal for engines with tall intake manifolds, large carburetors, or limited hood clearance. It is especially useful in performance builds for early Camaros, Corvettes, Novas, C10 trucks, and similar vehicles where a standard-height distributor cap may interfere with the hood or surrounding components. The crab cap design improves clearance without sacrificing ignition performance.

Do I need an ignition box with this distributor?
Yes. This distributor requires an external CDI ignition control box, which is not included. It is not a Ready-to-Run distributor and must be used with a compatible ignition control box and external ignition coil.

What coil is compatible with this distributor?
This distributor requires an external ignition coil rated for at least 35,000 volts. The coil is not included and should be selected based on compatibility with your external ignition control box and your Chevrolet small block or big block application.

What does the adjustable slip collar do?
The adjustable slip collar allows the distributor housing to be positioned precisely before being securely locked in place. This provides more accurate ignition timing adjustment and helps maintain timing stability under high RPM and engine vibration, making it especially beneficial for high-performance street and racing applications.

Is the steel gear compatible with my camshaft?
This distributor includes a steel distributor gear that is best suited for cast iron hydraulic and solid flat tappet camshafts. If your engine uses a roller camshaft or requires a bronze or specialty distributor gear, consult your camshaft manufacturer for the recommended gear material before installation.

Will this distributor fit a tall-deck big block?
No. This distributor is designed for standard-deck Chevrolet Mark IV big block engines only and is not compatible with tall-deck big block applications.

Which direction does this distributor rotate?
This distributor rotates clockwise, which is the standard rotation direction for Chevrolet Gen. I small block and Mark IV big block V8 engines.

Will this fit my 427 CID big block?
Yes. The Chevrolet 427 CID Mark IV big block in standard-deck configuration is a confirmed application for this distributor.

What electrical system does this distributor require?
This distributor requires a 12-volt electrical system with a functioning alternator. It is not compatible with 6-volt systems, generator-equipped vehicles, or ballast resistor ignition circuits.

Is this distributor available in different colors?
Yes. This distributor is available in both red and black finishes to complement your engine bay appearance.

Will this fit my Chevrolet Corvette, Camaro, or C10?
Yes. Common applications include the Chevrolet Camaro, Chevelle, Nova, Impala, C10, Corvette, and GMC C/K trucks equipped with compatible Chevrolet Gen. I small block or standard-deck Mark IV big block V8 engines. Always verify your engine family and configuration before ordering.