I think adding 250 lbs to a relatively low horsepower car is going to slow it down quite drastically. My car is around 200-300 lbs lighter than other Fox body stangs. And with comparable dyno numbers I am going sigificantly faster.
Most 3100 lb Stangs with 300 RWHP are trapping 107-108. My car weighs 2750-2800 and I trap 112-113 on motor with 309 RWHP.
Something to think about.
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1988 Mustang GT
stock bottom 302, C4
10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN
1989 Mustang notchback
Warmed up 306 with a Procharger.
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