03-22-2004, 04:41 AM
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CC Member
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Join Date: Aug 2003
Location: Southeast,
CT
Cobra Make, Engine: ERA #375 427 S/C - 428FE - Toploader - 1968 AMX 390 Go Pack 4 Speed - My Daily Driver is a 2004 Crossfire
Posts: 872
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Not Ranked
Quote:
Originally posted by joea
Isn't the standard set underdrive? I have them...I believe they are. THis would mean less flow than stock pulleys
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You know, that is a darned good question Joe. I frankly do not know what the diameters were for a "standard" 3 pulley set for the 427 or 428 actually were.
In any case, it appears I was really under-driving my water pump based on the size pulley there. No concern though, never had an overheating problem. The engine is not running hot or lean.
Chaplin:
Yes, I agree with you trying to find out which air filter combo will give you the best volumetric efficiency. I would start with the big air filter sans pan, then switch to the small k&N sans pan, then the K&N with Xstream top sans pan then finally, pull the carb, put on the pan and do the K&N again.
Thanks for your information guys.
Appreciated Much.
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