Z 2 8

Alright, how would a stock A4 98 LS1 match up against a 94 A4 LT1 with LT headers, matching Y-pipe, CAI, and a tune? The LT1 ran a best of 8.4 in the 1/8. I'm curious, who would be on top in this race and how much does a stock 98 A4 LS1 dyno?

Ray@Nitrous Outlet

should be a close race, w/a slight edge to the LT1.
Most LS1 A4 are in the 290-310 range

My 01 WS6 A4 ran consistent 8.4 1/8 mile times w/323rwhp

bene

iTrader: (16)

Depends on what gear does the LS1 has... it could have 3.23 or 2.73.

It should be close if the car has 2.73

slowmofo

iTrader: (6)

8.4 is good for about a 13 flat mabey 12.9

If the LS1 car is sportin 2.73's The LT1 should win easier then you think from a dig.

But thats just bench racing...

The LT1 That Could

iTrader: (3)

More like 13.10s - .20s

If the LS1 car is running a 2.73 gear, do not run him from a roll....he WILL catch you. It should be a very close race, and may come down to driver mod and/or tire setup. I'd give it to the LT1 by a car from a dig to 100mph. My car has LTs/True Duals, CAI, 3.42s, Weight Reduction, and some sticky Mickeys, and I have yet to have a stock LS1 car pull on me. Bolt-on cars give me a good run, and cammed cars put a whoopin on my ***.

Z 2 8

How can I tell if the LS1 has 2:73's? I know the LT1 has 3:23's. I'm not sure if it's the same with LS1's, but I know with LT1's that if the shifter has 1,2,D,OD, then the car has 3:23's. If it starts with 2,D,OD, then it's 2:73's.

Ray@Nitrous Outlet

GU2 = 2.73
GU5 = 3.23
located on the drivers door

The 01 ran 12.9's @ 108 w/8.4 @ ?? 1/8 mile

slowmofo

iTrader: (6)

My 94 ran 12.9 with a 8.4 also...

The LT1 That Could

iTrader: (3)

guess my calculations are a little off.

My car turns consistent 8.80s 1/8th and 13.70-13.80s 1/4, so i just figured a .4 - .5 gain in 1/8th (to an 8.40) would net about a .6 - .7 gain in the 1/4 (13.10 - 13.20). I have always heard your 1/8th mile is around 75% of the total run.

I may be forgetting that our cars tend to pull harder on the big end, so this is prolly why Im off. Sorry.

slick1851

My 2.73 LT1 was really damn quick from higher mph roll ons!

slowmofo

iTrader: (6)

1/8th mile X 1.57 will usually be close. Not always but real close.

An old time slip from my 94 1/8th was 8.58 times that by 1.57 and it comes out to 13.47.. My timeslip says 13.406

So its close, but not perfect

Skrilla

iTrader: (4)

You should pull him easily. I ran a LS1 A4 T/A W/ LT's, exhaust, and lid. I pulled him by a couple cars from a roll. All I have is shorties, exhaust, and pulley in my 93.

Z 2 8

Your situation was a little awkward. An A4 LS1 with those mods should be sitting around 320+Rwhp. I believe you, but he probably needed a tune.

I have a March Pulley 2 piece set that used to be in my car and I took it off. My timing chain broke a while ago and it ended up bending valves. My crank got screwed up as well, because when the guy fixed the timing chain, he didn't clean the oil pan and chunks of the chain was still in it...Anyway, I got a new crank and had the stock Pulley put back on with the balancer. Here is my question. I noticed that the aftermarket alt pulley was still on the car and the stock pulley was put back on. Most likely, im making less power now because of that. Now, should I put my March pulley back on? If i do, you can't use a balancer. It just kind of sets on there which i think is a little strange...Am i missing out on power? I noticed a tenth difference without the March. Keep in mind, this is with the stock pulley and the aftermarket alt pulley still on.

I'm paranoid to put the march back on, because i feel it stresses the crank and I will have problems. I remember shortly after having the March on the car, the timing chain broke. Is this coincidence, or does the March strain something? Due to the damage done to the crank, the March pulley is a little bent. I think that can be smoothed out and put back on though. It's always going to wobble a tad, since there is no balancer. (Which is something I don't understand)

Help me out guys, what do you think? Put the pulley back on, or no?

Skrilla

iTrader: (4)

This is what mine looks like

The new pulley is behind the old one. U are definitely losing hp with the alternator pulley. If its bent, don't put it on.

RaM AiR 97

iTrader: (1)

about a year ago i use to have lts 2400 stall cut out ramair and ran the best of 13.7 and a freind of mine has and ls1 stock with 20k he would run from 13.00 to 13.4 about half way down the track i would beat him but on the last half he would smoke me love lt1 but ls1 have good power

Z 2 8

Well, i think it can be smoothed out. It's not bent horribly bad or anything. I don't think enough for it to make a difference compared to how it was before. The picture you show looks like the stock pulley. That is one my current set up is like. The March is shiny chrome looking.

Skrilla

iTrader: (4)

The picture is the stock pulley, the new one I got is "shiny chrome" The old pulley is attached to the dampener. The new one just slides on behind it, and the old one just sits there

the_merv

iTrader: (88)

My old LT1 ran 8.3/.4 in the 1/8, and got 12.7's in the 1/4..

Z 2 8

That pulley looks like mine. (Shiny chrome) Is a dampener, a balancer? Is it just another word for it? I know that the balancer does not fit with the after market pulley that i have and you just slide it on...When I had the after market pulley on, i noticed a better response out the car.

Z 2 8

The race took place. In the street race/kill stories room.


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