houston we have a problem
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 77
Likes: 0
From: 1320 ft.! ! !
houston we have a problem Took my first trip to the track with my new set up. a4 60e performer build lvl2, 3800vig. converter, 373 10bolt, ts stg 2.5 5.3 heads, ls6 intake, 231/234 tr cam, ported tb, slp lid, 160 t-stat,power bond pulley,hooker lt, borla cat back,qa1 coil overs r series up front,sfc,lca,relocation brackets,ta,295/45/17 mt dr. dyno#s 413hp 417tq. the car ran 12.12 1.74 60"@111mph. I was upset after i left the track,was hoping to get deep into the 11's. The weather was humid @82 degrees,I hope that was part of my problem. chime in and help me figure out the problem
Last edited by sky; Apr 24, 2008 at 10:31 PM.
yea you definately should have been running into mid 11's or so. But your #'s seem low... A lot of heads/cam cars putdown close to 450hp I know many people who are over 400 w/ just a cam. Who tuned your car? Humidity definately was a factor
Dyno numbers seem good for an a4 with big stall gears maybe try and get that 60ft down alittle bit were you spinning? The only thing I can think of is if you werent spinning try a bigger stall like a 4000 or 4400 but the mph seems to be down alittle bit maybe it was just a really bad air day.
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11 Second Club
Joined: Oct 2005
Posts: 1,847
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From: Sandwich, IL
Your trap speed is WAY off for your rwhp. First thing I would do is make a 0-115 run and pay close attention to the transmission. What rpm does it shift at on the 1-2? What rpm does it shift at 2-3? Does it bounce the rev limiter at all? Is there an excessive delay during shifts?
If all that looks good then I would check the plugs and wires. After that I would bring the car back to a dyno and see if it's still making 400+ rwhp and at a safe A/F ratio.
Good luck.
If all that looks good then I would check the plugs and wires. After that I would bring the car back to a dyno and see if it's still making 400+ rwhp and at a safe A/F ratio.
Good luck.
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Location/elevation/ da at the track? all big factors. 60ft is not so bad, mph is horrible. Could be a problem with the car or air at the track. I trapped 111 with only LT's and ORY, though I have a 6speed.
Thread Starter
Staging Lane
Joined: Dec 2007
Posts: 77
Likes: 0
From: 1320 ft.! ! !
I let one of my friends make a pass in the car and I noticed the back of the car was bouncing after about 20 ft. the car spunt half way through 1st gear on 3 of the 4 passes car shifts pretty firm @6500rpm but when I did the head swap I checked all of of the spark plugs and one of them was cracked. So I replaced just that one. So I wonder if that could could be the problem. I know for sure that my stock back shocks are history, but could those bad shocks mak that big of a difference on my e.t?
as others have said your MPH is way low, and your 60' should be a lot better IMO then that. My bolt on car with a little TCI 3k converter with 3.73's went 1.69 in a full weight T/A
I let one of my friends make a pass in the car and I noticed the back of the car was bouncing after about 20 ft. the car spunt half way through 1st gear on 3 of the 4 passes car shifts pretty firm @6500rpm but when I did the head swap I checked all of of the spark plugs and one of them was cracked. So I replaced just that one. So I wonder if that could could be the problem. I know for sure that my stock back shocks are history, but could those bad shocks mak that big of a difference on my e.t?
All of these generalizations about what is wrong are wrong themselves. Never generalize track times. We need to know what the DA was before assuming ANYTHING. A large inefficient stall could be to blame for a low MPH as well. What one car in one town runs or traps has nothing to do with what another one may or may not do across the country
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WHIPPLE Superchargers, Procharger, Magnuson, Powerbond Sale, HPTuners packages!, Trickflow, AFR, PRC, CHE Trunion upgrade, $100 7.400" pushrod set, Custom Cam of your choice
