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Instruction Sheets for Part Number MSD-8489
MSD Pro-Billet Crank Trigger Distributors
Distributor, Pro-Billet Crank Trigger, Chevy, Big/Small Block, Each
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Overview
Brand:
Manufacturer's Part Number:
8489
Part Type:
Product Line:
Summit Racing Part Number:
MSD-8489
UPC:
085132084890
Distributor Cap Included:
Yes
Distributor Cap Style:
Male/HEI
Distributor Cap Type:
Crab cap
Ignition Coil Included:
No
Ignition Module Included:
No
Computer-Controlled Compatible:
No
Trigger Style:
Crank trigger
Advance Type:
Locked
Ignition Box Required:
Yes
Mechanical Tach Drive:
No
Slip Collar:
Yes
Distributor Gear Material:
Bronze
Distributor Gear Rotation:
Standard
Housing Material:
Aluminum
Housing Finish:
Natural
Marine Use:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Distributor is 2.875 - 3.750 in. tall from engine to top of distributor cap.
MSD Pro-Billet Crank Trigger Distributors
MSD Pro-Billet crank distributors are built specifically for racing engines with almost no room for a distributor, due to tunnel rams or blowers. These units are equipped with a special low-profile crab-style distributor cap, allowing them to fit into extremely tight areas. The housing features two optional O-rings at the bottom that improves 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 these are racing distributors, 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 the Pro-Billet crank distributor is MSD's own crab cap. This incorporates spark plug-style terminals for a better connection and grip to the plug wires. Order the model recommended for your vehicle and engine application.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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