Exhaust Dilema, 3" and 2 1/2
Here's the deal, 88 coupe 302 H.C.I. n/a, a.o.d. with a stall, 2,800 lbs. Currently running 7.35 to 7.45 at 93.5 mph in the 1/8th. 60fts are mid to low 1.6's. The exhaust set up is Mac 1 3/4 long tubes with a 3" h-pipe, into 3" ultra flows with dumps. I have been debating weather or not to change the exhaust back to something smaller such as 1 5/8 shortys that has been opened up a little, 2 1/2 x-pipe, 2 1/2 cat back. My thinking is that it will help the car 60ft better which will lower e.t's even more. The car was recently dynoed and produced 307 hp at 6400, 275 tq at 4500. Torque seems low especially at 2,000 / 3,000 range. Is it the exhaust set up or is it the Holley System max intake? or both? Any thoughts or experiences out there?