What are you launching at?
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my 91 lx coupe to 97 cobra 4 valve drivetrain swap
- Thread starter mustangcrazybj
- Start date
mustangcrazybj
Active Member
It seems to launch best around 5k, but this was my first time at the track with the new setup, I honestly.expect this this car to go 12.30's as is before the bad weather sets in
whiteponygt
Well-Known Member
ok i looked back over the post i didnt see where you had done anything to the rear are you launch at 5k on stock axles?
mustangcrazybj
Active Member
Yup 5k launch on stock rearend, I put the new 3.73 gear, new axle bearings and seals in it but I re-used the stock axles. They will probably let go real soon, I'm surprised that they didnt on the pass when I pulled the wheel lol
I launch at 7k on the stock axles.
whiteponygt
Well-Known Member
when yall say stock axles, are you referring to the stock 5.0 or did you switch to the modular rear?
mustangcrazybj
Active Member
I'm on the factory 97 cobra rearend in mine
Factory 4-lug axles.
mustangcrazybj
Active Member
Another PB 1/4 mile pass in the coupe yesterday, the previous best on motor was 12.55@107, yesterday I squeezed a 12.20@111mph out of it in some better air and with some weight reduction.
Nice runs. getting close to the 11s
mustangcrazybj
Active Member
I hope to break into the 11's on motor within the next month or so
Great job! Have you weighed the car yet?
mustangcrazybj
Active Member
Yes sir, it weighed in at 2920 without me in it before I raced it, however I swapped the 18'' wheels for some big and littles which should have dropped me around 100 lbs. I weigh right at 220 lbs myself making the race weight a hair over 3000 lbs
Bang them gears bro
whiteponygt
Well-Known Member
torture test is right was that drag strip or circle track.Its clear those motors will take a beating
mustangcrazybj
Active Member
Yup build them and drive em like I stole them is my motto lol
mustangcrazybj
Active Member
Over 5k miles on the car since the build, seems to be holding it's own lol
Speedtospare
Well-Known Member
Excellent. I had the same MPH with my eaton swap 93 coupe but my swap weighed 3040 w/o driver. Only had one pass of 12.7 bogging then i upper the rpm and broke the axles lol. I did a eaton swap after that.
I think i see you pop the wheels off the ground. nice!
I think i see you pop the wheels off the ground. nice!
mustangcrazybj
Active Member
These cars are for real, how does the eaton swap do for you? I am actually doing another 4 valve swap into a 91 coupe starting this week. It's a ported eaton terminator T56 swap so I'm expecting some pretty good #'s out of it too
Speedtospare
Well-Known Member
car on 91 octane pump gas, 9 psi, safe tune, and a 17" drag radial, went 11.50 without power shifting. Still fighting traction so next year going full slick. should be 11.20's in the combo.