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I dont mean to hi-jack the post but what about large exhausts and low-end cams? I will be building up my 88 22RE truck this summer and i want to put a low-end cam in it for more poop off idle but i have opened up my exhaust to 2.25" (2.25 cherrybomb turbo and 2.25 after that). I know generally that a smaller exhaust gives better low-end torque but with my kind of exhuast can i still expect nice low-ends gains from a cam?...


I would think that would depend on what you have bolted to the head.
If it's still the stock manifold and downpipe, you should be good.
Opening up the end only helps get the exhaust gasses out of the way.
It usually doesn't interfere with the back pressure.
If you have a header, things get more complicated to predict.

Todd

1986 Pickup extracab longbed "Woody edition"
SAS - 33's, 5.29's, lockright rear.

02 IS300 SportCross - my "DD"
94 2wd v6 extracab
04 Outback Wagon- wife's/family car