10-22-2001, 04:48 PM
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CC Member
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Join Date: Apr 2001
Location: West Suburbs,
IL
Cobra Make, Engine: Titanium SPF, 521 CID Gessford.
Posts: 338
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Not Ranked
Problem Dyno Sheet Posted
Hi all.
I cured the detonation and pinging issues with a trip to the dyno. Got the timing and jets straight, car runs good...Thanks for everyone's input. Relays on fan/ignition to stop run-on.
However, the horsepower curve goes up to 5,000 rpm then levels off until 6,200 rpm where it drops. More of a wavy plateau than a curve. This is a built 514 that should have power through 6,000 rpm easy. Bhp at wheels was 492.
Dyno guy suspects that the valves may be floating over 5,000 rpm. I have Edelbrock performer 460 heads with the stock springs (the ones they came with). The cam is somewhat hot (i.e. rump-rump) and it has 1.8 roller rockers.
Will the stock edelbrock springs work with this setup? Dyno guy says to go to Endurance Race Triple springs....
Also, this motor ate its last cam. I wonder if the springs were a cause of that?
Thanks.
Last edited by cdog; 10-24-2001 at 08:20 AM..
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