Thread: New EZ EFI Stack 482FE build results
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Old 03-04-2011, 09:15 AM
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philminotti philminotti is offline
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Join Date: Aug 2004
Location: Orange, CT
Cobra Make, Engine: KMP 736 Street, Pond 482, FAST XFI EFI
Posts: 339
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Keith-

Good to hear about the FAST system. I've been thinking of switching.

I have a question for you. I have one of your hydraulic rollers in my 482: 248/252, .633 lift, installed with an ICL of 108*. I have a mass-flo port fuel injection. At 1000 rpm with no load, I see 6-8 mm Hg manifold vacuum. At 1200 rpm no load, I see 15 mm. Varying the ignition timing doesn't significantly alter this. I've had the intake on and off several times for other reasons, with no change in vacuum after reinstall. I threw an old Holley carb on it, no change.

Any thoughts on this vacuum? Secondly, will the FAST system have a problem with this level of vacuum? I've been pretty unhappy with my Mass-Flo system.

Thanks.
phil
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