Got the longtubes...now do I need 3" exhaust?
My longtubes should be here today and the 1 3/4" primaries collect at a 3" collector. Looking for opinions as to whether or not I should go 3" all the way back, only a 3" H/Xpipe, or just stay with the 2 1/2" Hpipe?
whatcha think?
what type of thought goes into exhaust size? I had heard that anything over 450HP needs 3", is this true (Cause I'm not making that much......yet)
If I just put the longtubes on and reduce them to 2 1/2", will I still get the power gains.
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Red 1993 GT Street Machine
Best E.T. - 12.41/Best MPH = 108
Engine is a 1969 351 block w/393 stroker kit. Dynamic Roller Myte C4, 8 pt cage. Edlebrock Performer heads and Victor Jr. EFI, FRPP 30lb injectors & Cartech fuel system. MSD ignition. Sothside Machine bars & Sub-frames, adj. upper's, 3.73's, Koni rear shocks, much more
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