ls1 foxbody !
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Teching In
Joined: May 2014
Posts: 13
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ls1 foxbody ! i have mustang 1988 with ls1 engine .. before fixing the engine on my fox it ran about 450 hp (on its original car) but after i fixed the engine on the foxbody it ran about 350 hp (on the same dyno). i didnt change anything in the engine. am shocked why its less by 100 hp .. i want to know can the gear ratio be the cause ? i have a tr3650 trans with 3.73dum
can u help me figure the problem
Thanks
can u help me figure the problem
Thanks
On The Tree
Joined: May 2014
Posts: 100
Likes: 0
There's a lot of things that could cause the difference. Different dynos, weather conditions, correction factor used, was the car dyno'd in the same gear. The dyno is just a tuning tool, can't use it to chase numbers. The track tells the real story.
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On The Tree
Joined: May 2014
Posts: 100
Likes: 0
Was it done in the right gear? If it was done in say forth then done again in third that will make a difference. You want to dyno it in whatever gear is closest to 1:1. What trans are you using? And is it the same trans as before?
edit* i see the trans listed. reading fail first time
edit* i see the trans listed. reading fail first time
just like the guys said take it to the track, my old LS1 car in Florida dynoed about 355-365 range I think. It ran 11:40's. I sell it to somebody in New Jersey and his dyno tuner guru guy says the car only has about 245 and something is wrong. Back & forth calls and emails and still his guru is blaming the car. He was very upset that maybe I sold him a hurt car. Well he does what I say and goes to the track and BINGO a bunch of 11:40 11:50 passes on 235/60/15's DR's. takes more then 250 hp to go that fast. end of story. No a lightweight car either, full int and a/c and p/s.
On The Tree
Joined: May 2014
Posts: 100
Likes: 0
just like the guys said take it to the track, my old LS1 car in Florida dynoed about 355-365 range I think. It ran 11:40's. I sell it to somebody in New Jersey and his dyno tuner guru guy says the car only has about 245 and something is wrong. Back & forth calls and emails and still his guru is blaming the car. He was very upset that maybe I sold him a hurt car. Well he does what I say and goes to the track and BINGO a bunch of 11:40 11:50 passes on 235/60/15's DR's. takes more then 250 hp to go that fast. end of story. No a lightweight car either, full int and a/c and p/s.