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What gain?

This is a discussion on What gain? within the LT1 forums, part of the Vehicle Specific category; I asked this question in the automatic transmission section with no luck. I just recently purchased a '93 Formula for ...

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    Kenne-Bell Killer Cayenne97's Avatar
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    What gain?

    I asked this question in the automatic transmission section with no luck. I just recently purchased a '93 Formula for next to nothing. It's my first A4 car, and it's basically stock except for a cold air intake, 1LE elbow, 160 stat, cat-back and single 3" cut-out before the muffler. The car makes good power from a roll, but last night at the track I found it to be pretty sluggish off the line with the exhaust open (cap off). It didn't take me long to figure out that 1600-rpm launches with the stock converter just ain't gonna get it done. With the exhaust open it doesn't begin making any real power till around 3000-3200rpm.

    My next step is to order a Yank 3200-stall which will put me right around where my powerband begins. My question is what should I expect for a gain, considering good traction and the stock 3.23 gears on street tires?

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    Pathelogical Liar BlackLT1Z28's Avatar
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    With a proper-matching stall, most people report a drop in a couple tenths off their ET's.

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    Kenne-Bell Killer Cayenne97's Avatar
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    Quote Originally Posted by BlackLT1Z28 View Post
    With a proper-matching stall, most people report a drop in a couple tenths off their ET's.
    See that's the thing. I hear .2 from some people, then others will tell me it's more in the area of .4 tenths. I don't know which claim is more accurate?

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    Pathelogical Liar BlackLT1Z28's Avatar
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    Does it really matter how much, as long as there is an improvement? As long as you get a gain with the stall that you need/have, what would be the problem? Not everyone is going to see the same improvements.

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    By adding the stall you will see some improvement not sure how much. It all depends on your other components. But like Black said at least it is an improvement.

    Jay

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    M6 King Hot Black Trans-Am's Avatar
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    Another cool feature of the stall is you can snarl at cars when your cruising in the city without gaining speed. It's fun to do at imports and Mustangs.

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by Cayenne97 View Post
    I asked this question in the automatic transmission section with no luck. I just recently purchased a '93 Formula for next to nothing. It's my first A4 car, and it's basically stock except for a cold air intake, 1LE elbow, 160 stat, cat-back and single 3" cut-out before the muffler. The car makes good power from a roll, but last night at the track I found it to be pretty sluggish off the line with the exhaust open (cap off). It didn't take me long to figure out that 1600-rpm launches with the stock converter just ain't gonna get it done. With the exhaust open it doesn't begin making any real power till around 3000-3200rpm.

    My next step is to order a Yank 3200-stall which will put me right around where my powerband begins. My question is what should I expect for a gain, considering good traction and the stock 3.23 gears on street tires?

    my 3600 stall will be in next week i will let you know how much i gain

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    Kenne-Bell Killer Cayenne97's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    my 3600 stall will be in next week i will let you know how much i gain
    Great. I was wondering if I should have gone as high as 3600, but I think 3200should be enough. You've got an LS1, so 3600 is perfect. Let me know your results!

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    Catfish for Breakfast Bobby97SS's Avatar
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    Stall speed ratings are only approximate. Put that 3200 behind 1000 lb ft and it will probably stall at 4000.

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    Quote Originally Posted by Cayenne97 View Post
    I asked this question in the automatic transmission section with no luck. I just recently purchased a '93 Formula for next to nothing. It's my first A4 car, and it's basically stock except for a cold air intake, 1LE elbow, 160 stat, cat-back and single 3" cut-out before the muffler. The car makes good power from a roll, but last night at the track I found it to be pretty sluggish off the line with the exhaust open (cap off). It didn't take me long to figure out that 1600-rpm launches with the stock converter just ain't gonna get it done. With the exhaust open it doesn't begin making any real power till around 3000-3200rpm.

    My next step is to order a Yank 3200-stall which will put me right around where my powerband begins. My question is what should I expect for a gain, considering good traction and the stock 3.23 gears on street tires?
    are u sure that u have 3.23 gears? i thought only t/a's got 3.23 in 93. i have a 93 formula that is stock with 2.73 gears. this would explain why your car is slow out of the hole....they got 2.73 gears for highway cruising. i know what u mean by good power from a roll...but out of the hole it isnt the best. put the car up and take the gear housing cover off....count the teeth on the gears....small one should be 15....the bigger one 41. take 41/15=2.7333rep......this is the only 100% way to know your gear ratio. i could be wrong, but just check to make sure. u should go with 3.42 instead....ull notice a difference in acceleration and itll still be all right on fuel economy.

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    Pathelogical Liar BlackLT1Z28's Avatar
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    Or, instead of counting teeth, you could look at your RPO codes.

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    Quote Originally Posted by BlackLT1Z28 View Post
    Or, instead of counting teeth, you could look at your RPO codes.
    stickers are not 100%.....the only sure way is to inspect the vehicle

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    Member 35thz28camaro's Avatar
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    2002 z28 camaro

    tested my 3600 stall for the first time last night, i picked up .3 in an 1/8 mile

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    Kenne-Bell Killer Cayenne97's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    tested my 3600 stall for the first time last night, i picked up .3 in an 1/8 mile
    Good gain! I installed the stall about 2 months ago and wen't from a best of 14.02 to 13.71. I've since added Motive 3.90 gears, Level 10 shift kit, JET Billet 2-1 servo, Strange hardened axles, BFG 255/50 Drag radials, Eibach Drag launch springs & Subframes. The car is snappy as heck off the line. Have yet to hit the track again, but i'll post numbers as soon as I do.

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    Member 35thz28camaro's Avatar
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    2002 z28 camaro

    what was your 60" mine was 1.67, 7.39 1/8 mile time, my mods are LT, lid, 3600 stall, 373's, flowmaster; we dont have a 1/4mile track in my area

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    let the F-Bodies roll jimmybling31's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    what was your 60" mine was 1.67, 7.39 1/8 mile time, my mods are LT, lid, 3600 stall, 373's, flowmaster; we dont have a 1/4mile track in my area
    holy shit. how did you get that time out of it? with those mods I would expecct around 8 flat at the best. dang. good job.

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    Kenne-Bell Killer Cayenne97's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    what was your 60" mine was 1.67, 7.39 1/8 mile time, my mods are LT, lid, 3600 stall, 373's, flowmaster; we dont have a 1/4mile track in my area
    My 60-ft was 1.97. That's a heck of a 60 you got there! Are you on drag radials?

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by jimmybling31 View Post
    holy shit. how did you get that time out of it? with those mods I would expecct around 8 flat at the best. dang. good job.
    my car ran 8.55 stock, after 373, lid, and flowmaster went 7.97, after LT went 7.62, after 3600 stall 7.39

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    Member 35thz28camaro's Avatar
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    Quote Originally Posted by Cayenne97 View Post
    My 60-ft was 1.97. That's a heck of a 60 you got there! Are you on drag radials?
    i am runnig hoosier DR's

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    Kenne-Bell Killer Cayenne97's Avatar
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    Quote Originally Posted by 35thz28camaro View Post
    i am runnig hoosier DR's
    Cool. I've got Nitto 555R's on my other car, and BFG Dr's on my Formula daily driver.
    97 Z28 1LE #53 11.08/122.84 N/A, 9.82/131.06 150-shot

    02 WS6 M6, STOCK H/C/I, 3189 lbs., 11.77/113.02 (1.59 60')

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