Why so slow?
Thread Starter
Launching!
Joined: Mar 2003
Posts: 284
Likes: 0
From: Michigan
Why so slow? I have a 95 Z28 with 60K on it. It is an A4 with a 3200 Vigilante converter. I have removed the AIR, EGR, ABS, ASR, and added 4.10's, a UMI torque arm, double adjustable LCA's Hal QA1 shocks on the back. All I did to the motor is put on Pacesetter LT's, a Moroso CAI, and remove the knock retard from the PCM and lean out the AFR at WOT from 4500-5800. The best I can muster is a piddly 13.12 at 101 in the quarter. It runs consistant 1.75-1.8 60' times with MT ET STREETS Why is my car so slow?
That is not slow for a bolt-on LT1, your accually doing quite well, you are "dead on" the ETs with that MPH of 101, i run 13.7s @ 101 with a suck azz 2.17 60ft, mines just a bolt-on LT1 also with 3.42 gear & a 6sp., i would be jumping for joy if i ran 13.teens 
, so don't sweet it, your doing great .
, so don't sweet it, your doing great . Trending Topics
I don't know, but it looks a little off to me. My 130,XXX mile bolt on car has trapped 106 on the stock tune in decent air. I've also logged a little better 60' times with less gear, less stall, and fewer suspension mods.
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somthing isnt right with you mods because i have the same except for your suspension mods and your stall and i have 3.73's and i can trap at 103.6 and run a 13.5 somthings your leavin awsome but sumthing isnt right with your mph.........why would you lean out your AFR?
9 Second Club
Joined: Jan 2006
Posts: 301
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From: ringgold,ga
weight and temp./humidity make a big difference. try a mezeire electric water pump and 160 th. also you could run your fan to a relay and then to a switch. the electric water pump alone, should pick you up over a tenth. for dragstrip only purposes, take a jack and some tools and remove the serpentine belt for a couple passes. (make sure your battery has a good charge). removing the drag from all the pulleys will pick you up atleast .15-.2. the car will rev amazingly quicker.
Thread Starter
Launching!
Joined: Mar 2003
Posts: 284
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From: Michigan
Stock tuning has these cars running rich at that rpm , that's why I leaned them out. I was seeing FALSE knock at that rpm also so that's why I took out the retard in the PCM. When I removed those things, I picked up 2 tenths. I also forgot to mention I have a Mallory 685 box.
12 Second Club
Joined: Jun 2005
Posts: 509
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From: Warner Robins Ga
maybe with the 4.10s your tranny is shifting into 4th at around 1000ft mark which would kill your times? That's just a guess, I was thinking of doing 4.10 to help me get in the 12s but from what I researched 3.73s r better than 4.10s for A4s in the qtr. What's your car weigh?
Thread Starter
Launching!
Joined: Mar 2003
Posts: 284
Likes: 0
From: Michigan
maybe with the 4.10s your tranny is shifting into 4th at around 1000ft mark which would kill your times? That's just a guess, I was thinking of doing 4.10 to help me get in the 12s but from what I researched 3.73s r better than 4.10s for A4s in the qtr. What's your car weigh?
12 Second Club
Joined: Aug 2007
Posts: 387
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From: North Versailles, PA
We're both going on a diet this winter.