This is topic 93 need help in forum Tech Talk at Northern California Ford Owners .
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Posted by 93 5.0 (Member # 12418) on
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I. Have a 93 stang with gt40p heads and gt40 upper and lower and a put a e303 cam and my car feels slower I thin what I did with the stock cam any idea why this is ?
Posted by nitrous_bob (Member # 77) on
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any porting ?
what rockers ?
and what intake ?
what are the numbers on the lower ? you may have slowed it down, because not all gt40 "looking" lowers are the correct size
theres a "AA" lower and a "BA" lower look by the dizzy cutout
one is gt40, one is explorer
The BA is .96"x1.65" and the AA is 1.00"x1.80"
and P heads have smaller valves than real gt40, not much bigger than stock
stock = 1.78/1.45
P = 1.84/1.54
gt40 = 1.90/1.60
did you dyno b4 after ?
did you take it to the track b4 / after ?
Posted by 93 5.0 (Member # 12418) on
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I got the set up from a buddy and before with a 4.6 and I had the stock cam and then I put the e cam in and he pulled on me hard and his car just has xpipe and cold air but the heads were ported and new val and springs
Posted by 90 7up lx (Member # 10304) on
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Timing?
Posted by 93 5.0 (Member # 12418) on
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It's was set at 12
Posted by nasty93 (Member # 8935) on
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Maybe you need to learn to shift differently with this cam
Posted by 93 5.0 (Member # 12418) on
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I look at the intake and it's a ba
Posted by 93 5.0 (Member # 12418) on
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This is also my first stang too before it was Hondas
Posted by nitrous_bob (Member # 77) on
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well the plain truth is....all the stuff you used doesnt make any more power really. none noticible anyways.
its all basically explorer stuff, and the stock cam is actually pretty decent
throw a small shot of nitrous on there, along with 4.10 gears and that car will wake up. it will also take advantage of what youve done, and and you'll multiply your gains
if you do all that....look for a set of cheater slicks like mickey thompson "et streets" radials are nicer in rain but either way will look like a mo-fo
Posted by El kommander (Member # 10751) on
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Wat if the manifold says bb?
Posted by Grants93GT (Member # 10614) on
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I am also curious about this. A gt40p set up with an E cam should be around 250wheel, no? The difference between the stock cam and E cam was almost non existent power wise. I dont understand why. The timing marks on both crank gear and cam gear were lined up, it was not degreed at all. The distributor is set correctly and timed at 12degrees. I would imagine there would be some sort of gain from the E cam, even if it is outdated.
Why would there be such minimal gains? I have heard of some gt40p and E cam combos become pretty solid when put in a fox. What have people done to make them quicker? It is stock gearing, probably 3.08s. I imagine 3.73s or 4.10s would be a noticeable difference, but i expected some gain from the cam as well.
Posted by 93 5.0 (Member # 12418) on
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So I put new plugs in and it's like it wants to go but something holding it bak like pulling bak -_- idk
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