This MSD Pro-Billet distributor features an adjustable slip collar. This allows you adjust the distributor to the correct height to accept engines with custom intakes or decked heads and blocks. In all other aspects, it is identical to MSD’s P/N 85551 distributor. For a more complete list of parts and prices download the price sheet from the Price Sheets page.
Key - None. Prices are on Price Sheet download.
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Pro-Billet Chevrolet V8

 MSD PRO-BILLET DISTRIBUTOR WITH SLIP COLLAR
MSD P/N 85561
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MSD Pro-Billet Chevrolet V8 Distributor With Slip Collar
     If you have a slightly taller block or have decked the heads, the distance between the distributor mounting pad and the cam gear/oil pump drive may be different. MSD offers a Pro-Billet distributor with an adjustable slip collar with 1-1/2” of adjustment so you can be sure the distributor is installed correctly. This slip collar allows you to compensate for machining of the engine block, intake manifold, or heads. The adjustable collar will ensure that you obtain the correct gear mesh as well as the oil pump to distributor shaft overlap. Once adjusted, the slip collar locks securely in place around the distributor housing.
     The distributor shares the same features of the standard Pro-Billet Chevrolet model including a ball bearing guide, long sintered lower bushing, and oil seal. To trigger the MSD ignition a maintenance-free magnetic pickup is secured in the billet base of the distributor.
     Just above this pickup assembly is an adjustable mechanical advance assembly. Precision chrome moly weights slide freely on nylon pads for smooth timing advancement that you can control with different advance springs and stop bushings. MSD’s racing rotor and brass terminal cap top off this high performance distributor.
Replacement Parts
Distributor Cap: P/N 8437, P/N 8435
Distributor Rotor: P/N 8467
CAP-A-DAPT: P/N 8445, P/N 7445
Distributor Gear: P/N 8531
Distributor Gear (Bronze): P/N 8471, P/N 8472 (+.006”)

Note: Must be used with 6, 7, 8, 9, or 10 Series Ignition. Supplied with cap and rotor. Unit stands 5-3/4” to 7-1/4” above the intake manifold after being installed and is approximately 5-1/8” wide. This product is not legal for sale or use on pollution controlled vehicles.