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Throttle blade diameters are 1-7/16 for the primarys and of 1-11/16 diameter for the secondarys
Chevy V8 / Small Block Ford
and featuring a reverse stitched design for a closer and less obtrusive fit
The MSD Crab Cap Distributors are built specifically for racing engines with almost no room for a distributor due to tunnel rams or blowers
Outerwears 3" Breather Pre-Filter - Yellow 20600S Throttle blade diameters are 1-7/16Outerwears was created to fulfill a desperate need to keep the Air filter and engine clean during off road racing. Racers and engine builders were experiencing loss of horsepower and engine damage due to sand, dirt, and other debris prematurely packing (clogging) the filter and often passing through the filter into the engine. Filters loading up with dirt meant loss of horsepower and in many cases loss of a race. Race crews were noticing severe engine
