spina74

I've been driving a stick for about 3 years now, but I've never raced with one just autos. I ran my trans am lastnight for the 1st time, but I couldn't hit the 13's. I was in the 14 -16 sec range all day. Everytime I raced I had wheel spin all through first, but I kept trapping in at 98mph..even when I ran a 16.5. I was doing light clutch dumps all day until my last run when I ran a newer mustang gt. I tried easing into the clutch and still had wheel spin. I almost caught him but came up short. I know my car has way more potential, but I'm not getting the whole launching part. What do you guys hold your rpms at and how do you take off. I'm still currently using the stock 3.42 gears and a 315 street tire.

Injuneer

What year is your Trans Am? What engine? What modifications, if any? You need to include this info in all your posts, so people can answer your questions. Why not add a "Signature", with basic info - year, model, engine, trans, major mods. That way, the info will automatically be appended to every post.

I'm guessing its a 4th Gen..... What diameter are the wheels? What brand are the "street" tires, how old are they, how much tread left? What did you do in prep, before pulling into the beams? How well was the track prepped? What, if anything have you done to upgrade the suspension?

spina74

I was running 17" sumitomo 315's.

bkpliskin

how in the $%*& are you trapping slower than stock with a fully built motor??????

Jlo

What he said ↑...those time's seem misleading..

spina74

thats the reason why I'm asking, I know the car has WAY more potential. Maybe my launching and spinning 1st was causing that. When I saw 16.5 at 98mph I knew something was up. How do you guys launch, maybe I'm really screwing up.

AL SS590 M6

Where do you live/race? Very high altitude/DA will make a fast car seem slow to those at low altitudes.

spina74

I live in southern nj and race at atco raceway. I believe its 33 feet above sea level

Mikes 1994 z28

What are your 60 ft times?

slomarao

i dont see an aftermarket cam in your sig? Do you have one?

Who tuned the car?

JakeRobb

Post ALL of the data from your best timeslip.

Are you granny shifting? To match the MPH of an equivalent auto with a good converter, you'll need to learn to powershift.

canuck94z28

Yes that 60 ft. would tell a lot.Also those large tires must be totally shot< the bigger size doesn,t neccessarily mean great 60 ft.s.

spina74

I'm still on a stock cam as of right now.
R/T - .295
60' - 2.306
1/8 - 9.299
1/8 mph - 79.49
1000 - 1.034
1/4 - 14.324
1/4 mph - 99.40

the computer was tune by Brian Herter at PCM For Less

my tires had about 600 miles on then when I got to the track.

slomarao

your car is actually very similar to my setup. We both have pretty much all the bolt ons aside a EWP and have head/intake work. My heads only have a valve job and are gasket matched. Not sure what yours consist of but anyway, you should still be trapping quite a bit higher mph.

The 60ft explains your ET's but you should still trap 106-108 ish with bolt ons and heads. I would do a tune up and try to find out whats holding back your power. Than if could hop on a dyno it would be great to see your hp and tq curves.


I think your car is missing out on a ton of power. Your time slip looks like one from a stock car with a bad 60ft time. If you would of cut a 2.0 60ft you would of went 13.8ish @100mph. find out whats wrong and things should get better. also get a pair of drag radials. those two should solve your problems.

kazman

Check the plug wires. You might find one burnt from the LT's.