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MSD 8489 Chevy Crab Cap Crank Trigger Distributor

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#5478489

MSD 8489 Chevy Crab Cap Crank Trigger Distributor

Name: MSD 8489 Chevy Crab Cap Crank Trigger Distributor
Brand: MSD
SKU: 5478489
Price: 415.95 USD
Availability: InStock

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Cap Color:

Red

$415.95

/each

Factory Shipped

$449.95

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Product Summary

External Ignition Box Required, HEI / Male Cap Type

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Key Specs

MFG. Part #	8489
Brand	MSD
Cap Type	HEI / Male
Advance Type	None

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Need To Know

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MSD 8489 Details

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 MSDs own Crab Cap! This cap incorporates spark plug style terminals for a better connection and grip to the plug wires.

Installation Instructions (PDF)

Designed to fit low in the block to clear firewall and intake combinations
CNC machined billet aluminum housing and Dupont Rynite base is designed for standard Chevrolet blocks
Adjustable slip collar for engines with modified deck heights
0.500 taller for extra tall Chevrolet based engine blocks
Oversized polished steel shaft with a QPQ coating for friction reduction
Shaft is guided by a sealed ball bearing and an extra long sintered bushing
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 Ignition Control
No CARB Exemption Order Number
Must be used with and MSD 6, 7, 8 or 10 Series Ignition.
Must be used with a Crank Trigger.

Guides & Documents

Distributors Installation Instructions (5478489)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

MSD 8489 Specifications

KEY SPECS
MFG. Part #	8489
Brand	MSD
Cap Type	HEI / Male
Advance Type	None

GENERAL
External Ignition Box Required	Yes
Cap Terminal Style	HEI / Male
Trigger Style	Crank Trigger
Hall Effect	No
Sync Signal	No
Trigger Sensors	Single
Gear Material	Bronze
Gear Rotation	Standard
Ignition Box Required	Yes
Mechanical Tach Drive	No
Slip Collar	Yes
Housing Material	Billet Aluminum
Housing Finish	Natural
Marine Use	No
Sold in Quantity	Each
GTIN Code	085132084890

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Questions & Answers

2 Questions • 2 Answers

Sort Questions

Will this fit a 1964 283 small block Chevy. Used as a boat engine with very little clearance between top of engine and the deck. Thanks Wayne

by Wey

• 9 years ago

1 answer

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Will this work for a Small block 350?

by Don

• 10 years ago

1 answer

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2 of 2 questions shown