If i was to get a 2.76 blower pulley, does this require lower pulleys also? I know i need a shorter belt but will my alternator burn out or something if i dont change lower pulleys?
Blower pulley and lower pulleys
- Thread starter idiliogomez
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- cobra pulley pulleys supercharger
No, a larger lower crank pulley isn't needed and can be a pain to install. You'll be fine with just the 2.76". If you port the blower then the addition of a 4 lb. lower works well because the blower is more efficient and can better handle the increased boost. You will, though, need at least an auxiliary idler for more belt wrap and less belt slip. I'd recommend a 4-piece billet set and get rid of the stock, stamped steel idlers. As far as the alternator pulley, some have gone with a 3.20" (stock is 2.6") to slow it down and increase the life of the alternator. The majority stay with the stock alternator pulley unless they increase the size of the lower crank pulley.
thanks for the help bob
A smaller upper pulley will not make your alternator spin fast. Your crank pulley is the drive pulley. I put a bigger alternator pulley on a stock lower for what it's worth.
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