Cobra and Lightning pulley interchangeable?

V6Sprout

Registered User
Do the 03 Cobra and Lightning blower pulley's fit the SC blower? What size is the SC stock pulley on a 1990 blower? Thanks folks!
 
The cobra/lightning pulleys don't have keys. They just press on and held secured with an 8mm bolt and washer. But their pulleys are larger in diameter than any stock SC pulleys. You might ask ESM, they make pulleys for both types of pulleys for roots blowers.
 
i found one listed as 2.95 diameter, what size is the stock SC pulley. A key can be cut into the pulley I bet.
 
cougarsc said:
The cobra/lightning pulleys don't have keys. They just press on and held secured with an 8mm bolt and washer. But their pulleys are larger in diameter than any stock SC pulleys. You might ask ESM, they make pulleys for both types of pulleys for roots blowers.

I believe the stock 89-93 supercoupes used 3.13" whereas the 94-95 used 3.275

(or something like that)
 
Larger crank/jackshaft and/or smaller SC pulley will make more boost. Just look at the drive ratio (jackshaft or crank size divided by sc pulley size)
 
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