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View Full Version : IMCA Hobby Stock exhaust manifolds



garyb89
01-24-2012, 09:42 PM
With the new rules for 2012 what are the best exhaust manifolds for the Chevy 350?

carowner73
01-25-2012, 12:41 AM
Ram horns with the 3 inch collector, very hard to find and only came on the corvette i believe, then the ram horns with the 2.5 inch collector

allot of the cars must have the frame modifed to allow these to fit, metric and big chevelle that i know of.

garyb89
01-25-2012, 12:06 PM
Aside from the pipe size what manifolds would you use?
We have been using the ones that come on late 70's, early 80's pickups.
What about the LT1 manifolds such as 93,94 Z28's and Trans Am's used?

stockcar5
01-25-2012, 03:35 PM
jeff is right lt1's are no better than other manifolds. off topic..exhaust does make a difference at least if you throw headers on just for fun. my buddy did that on the dyno to his hobby motor and picked up 25hp.