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MSD Pro-Billet Crank Trigger Distributors 8558

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$259.97

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Distributor, Pro-Billet, Crank Trigger, Mechanical Advance, Chevy, Tall Deck, Big Block, Each

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Brand: MSD Ignition
Manufacturer's Part Number: 8558
Part Type: Distributors
Summit Racing Part Number: MSD-8558

UPC: 085132085583
Computer-Controlled Compatible: No
Trigger Style: Crank trigger
Advance Type: None
Cap Style: Male/HEI
Mechanical Tach Drive: No
Slip Collar: Yes
Gear Material: Bronze
Ignition Box Required: Yes
Distributor Gear Rotation: Standard
Housing Material: Billet aluminum
Housing Finish: Natural
Marine Use: No
Quantity: Sold individually.
Notes: For use with tall deck blocks.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

The unique design of MSD's Pro-Billet crank trigger distributors fits tight intake systems while still transferring the high voltage of the MSD racing ignition to the spark plugs. Since these distributors are used primarily in racing applications, an oversized steel shaft is responsible for delivering the sparks reliably and accurately. The shaft is QPQ-coated for friction reduction and is guided by a sealed ball-bearing assembly at the top and an extra-long sintered bushing at the bottom for smooth operation and lifelong reliability. Chevrolet models also have two O-ring grooves at the base of the housing to prevent oil in the lifter valley from leaking through the oil passage, and are available with an adjustable slip collar for tall blocks. For high rpm stability, the housings are CNC-machined from solid billet 6061-T6 aluminum that is machined to within 0.001 in. for absolute accuracy. These distributors have a low-profile Rynite cap assembly to clear busy intake setups. The low design is accomplished because the only thing under the cap is a rotor! The high voltage carrying capabilities are the result of several features, including a large diameter cap with wide spaced terminals, and an injection-molded Rynite rotor with thick vanes to stir up the air inside the cap. The high dielectric Rynite base also prevents arcing to the billet housing. They're also available in Crab Cap models to clear tunnel rams and superchargers, or with slip collars for modified blocks, heads, and intakes. These distributors don't have an advance assembly or pickup, so they must be used with a crank trigger. They also require the use of a separate ignition box, such as an MSD 6, 7, 8, or 10 Series ignition.

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1 Customer Reviews for MSD Ignition 8558 - MSD Pro-Billet Crank Trigger Distributors

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msd pro-billet crank trigger distributor 8558

Summit RacingSummit Racing Verified Purchase

With the adjustable slip collar you can get the right distributor gear to camshaft gear contact.With different inlet manifolds this helps and set correctly there should not be no downward load on the oil pump.

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Reviewer: JOHN from Australia

Date: March 05, 2014

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Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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