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Old 03-25-2017, 07:36 AM   #56
Bored&Stroked
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Join Date: Jan 2011
Location: Central Ohio
Posts: 5,218
Default Re: Isky 404A cam - Harley Davidson grind?

Quote:
Originally Posted by Ol' Ron View Post
I agree with you here, I have only one suggestion, don't use the compound springs.
The double springs actually don't gain you anything - and they're a pain in the butt to install. Buy the single Isky 185G springs and install them with about 75 - 80 lbs on the seat. If you're not going to rev it high (like race it) and keep the RPM below 5000, you can probably get away with 70 lbs. That blower won't make a lot of boost anyway - probably 6 - 8 lbs at best.
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