Crank Trigger Distributor Chevy V8 Low Profile, Super Tall Block w/Black Crab Cap

Name: Crank Trigger Distributor Chevy V8 Low Profile, Super Tall Block w/Black Crab Cap
Brand: MSD IGNITION
SKU: 121-84863
Price: 549.95 USD
Availability: InStock

^$549⁹⁵

Ships on Nov 02, 2026

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Chevy w/Crab Cap HEI-Style

Chevy V8 Low Profile
Super Tall Block
With Black Crab Cap

This MSD Chevy V8 Low Profile Crank Trigger Distributor is specifically built for racing engines with super tall blocks (Allen Root, Rocket) and equipped with a low-profile, black crab-style distributor cap. This distributor can only be used with a MSD 6, 7, or 8-series ignition and a crank trigger.
Designed to fit low in the block to clear firewall and intake combinations
Must be used with an MSD Crank Trigger and MSD Ignition Control
Supplied with small, low crab style distributor cap, rotor and bronze gear
O-ring seals can be added to modified blocks to improve oil pressure control
Special oil tract improves lubrication to the distributor and cam gear
Shaft is guided by a sealed ball bearing and an extra-long sintered bushing
Oversized polished steel shaft with a QPQ coating for friction reduction

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Distributors Geared for Racing

MSD Ignition Crank Trigger distributors are designed for racing engines that use a crankshaft triggered ignition. A low profile lets these distributors fit in tight quarters and still accurately deliver the sparks. Each crank trigger distributor contains a CNC-machined billet aluminum housing and inside the housing, a sealed ball bearing and long sintered bushing, guide a QPQ-coated shaft for accurate spark delivery throughout high rpm. A low profile distributor cap with brass terminals clamps onto the housing and covers the racing rotor. The rotor contains deep vanes to stir up the air; reducing the chance of spark scatter. Since these distributors are for racing applications, bronze gears are supplied. Must be used with an MSD Crank Trigger and MSD 6, 7 or 8-Series Ignition Control

Part TypeDistributor

Product LineMSD Ignition Crank Trigger Distributors

BrandMSD IGNITION

Package Height6.7

Package Width7.2

Package Length18.0

Weight4.15 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part Number84863

Package Qty1

Package TypeEA