MSD Ignition 8489 Small & Big Block Chevy Crab Cap Crank Trigger Distributor

Crank Trigger Distributor

Chevy V8 Low Profile

With Crab Cap

The MSD Crab Cap Distributors are built specifically for racing engines with almost no room for a distributor due to tunnel rams or blowers. The distributor is equipped with a special low-profile crab style distributor cap to allow it to fit in extremely tight areas. The housing features two optional O-rings at the bottom that improve oil control by preventing oil pressure loss. Also, a small oil bleed hole located in the base sprays oil on the distributor and camshaft gears to prevent excessive wear. Since this is a racing distributor, there is an adjustable slip collar to make up for engines that have had the distance between the mounting surface and the gear modified. Crowning this distributor is MSD's own Crab Cap! This cap incorporates spark plug style terminals for a better connection and grip to the plug wires.

Designed to fit low in the block to clear firewall and intake combinations

Adjustable slip collar for engines with modified deck heights

0.500" taller for extra tall Chevrolet based engine blocks

Special oil tract improves lubrication to the distributor and cam gear

O-ring seals can be added to modified blocks to improve oil pressure control

Supplied with small, low crab style distributor cap, rotor and bronze gear

Must be used with an MSD Crank Trigger and MSD 6, 7 or 8 Series Ignition Control

Not legal for use on pollution controlled vehicles