Making a 3400 look like a 3100

[jt350]

Cam and opened heads will make a world of difference on you car. I know I am talking about a different platform, but I recently saw a ~30% increase in WHP on my BMW simply by swapping to a late model (better flowing head) head and cam - even using the same small exhaust manifolds that came with the weaker motor.

Are you allowed to modify the exhaust manifolds? Opening up the inside of them to free up a little more flow will help as well (since you can't use headers)...

i opened up my exhaust ports on my heads and made my exhaust flanges to 2 1/2 in. or 3 in.and ran pipe out in front of rear tire and i felt a difference. someone told me to paint my exhaust and run it for awhile and cut the pipe right where the paint stops burning off.i guess it has something to do with back pressure.maybe this info. will help him out. oh and ben i have a dvd of our races in pa. if you want i could send you one or maybe anyone else thats interested. remember go fast,be safe!!

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[robertisaar]

actually, that trick is to help eliminate reversion.