05-10-2011, 04:17 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,415
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Not Ranked
Well, I'm gonna tell on myself...
I've been disappointed with the horsepower on this engine since we got back from the dyno. I know that there are stingy and liberal dynos but I still wasn't satisfied with the results.
Remember when I wrote that I had to turn the headers upside down to fit on the dyno?
Well....
When you turn them upside down, it mismatches the port horribly. You can even put the header gasket on upside down as well. It matches so poorly that it ends up blocking off about a 1/3 of the header. The exhaust exits and it basically hits a wall.
It sounded a little flat on the top end and I think that very well may be why...it couldn't scavenge (or even push out) the exhaust.
My game plan is throw a little more valve spring to it (just to be on the safe side) and find a shop that has a SuperFlow pump. I've already talked to the customer and we're gonna hit her another lick.
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