Questions on 2.5" vs 3" Exhaust - Page 7 - Chevelle Tech
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post #91 of 91 (permalink) Old Jul 31st, 19, 1:54 PM
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Greg.
 
Join Date: Apr 2011
Location: Ottawa, On, Canada
Posts: 4,705
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Re: Questions on 2.5" vs 3" Exhaust

No Alan they were open for the lower 3 Tenths Time of 11.81 et

Everything else was the same as the 12.11 et = 2,500 Stall TC / Tired old TH400 / Tune etc.

And yes as the Exhaust Gases cool down they do not need as much room/ as large of pipes to freely Flow out of the system

Had barely enough room for the 2.5" Pipes over the Rearend and to the Back with the largest Tires I can fit in the Stock Fenderwells
Alan F likes this.

67 Chevelle Malibu SS Cdn
Born 283 / PG / A51
468/TH400 2,500 stall/ S60 3.70 Gs
Prev Best on M/T ET S/S #3454 street Tires/Dress 2018/05/20
60' = 1.664
1/8 = 7.532 et / 91 mph
1/4 = 11.814 et / 115 mph
NEW Best with 3,500+ Stall TC 2019/06/23
60' = 1.561
1/8 = 7.411 et / 90.18 mph
1/4 = ??.??? et / ??? mph


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