LT1-LT4 Modifications 1993-97 Gen II Small Block V8

a4 to m6 issues

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Old Sep 25, 2011 | 02:42 PM
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Default a4 to m6 issues

Okay i'm having kind of a weird problem. I recently swapped from an A4 to a T56 and from a 2.73 to a 3.32 rear end.
I used a cheap autozone clutch,master and slave cylinder.

Now everything feels fine when driving everyday but the car doesn't seem to have the same amount of torque if that makes sense. Before when i had the automatic i could roast the tires all the way through first and second. now if i'm in first gear going like 5-7mph and punch it the car wont even chirp them.

i don't see how this is possible considering now the car has a t56 and more aggressive gears.

there are no vacuum leaks at all and i dont feel any misses.

any ideas?
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Old Sep 25, 2011 | 02:58 PM
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Ever heard of a torque converter?
The 4L60 has a 3.06 first as well and the 94+ T56 has a 2.66 negating a HUGE chunk of the ring rear ratio change.
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Old Sep 25, 2011 | 03:24 PM
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Yes i have heard of a torque converter had a big stalled auto at one point.

so this is normal then. Okay its just not what i was expecting at all.
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Old Sep 25, 2011 | 04:09 PM
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If the car isn't your DD, then Id swap those gears out for a 4:10. If so, then something like a 3:73 should be alright, and still give you a performance gain.
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Old Sep 25, 2011 | 04:13 PM
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When I ran the math on the gear swap I assumed you meant 3.23 gears.
With the double overdrive and the 94+ ratios 3.73-4.10 is good for a daily driver even.
I believe the 93 had less overdrive so you might not want as much gear with those.
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Old Sep 25, 2011 | 04:41 PM
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im gonna agree with the above posters and say that a big chunk of your problem is in the rear end ratio. I did the a4/m6 swap but i had 3.73's in the auto. I just kept those when i did the swap and because its my daily driver, its been fine.
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Old Sep 26, 2011 | 05:33 AM
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When i did my m6 swap i went from a 2.73 to a 4.10 and it would toast tires on a dime even at stock level before doing boltons. I would highly rec 4.10s and they dont affect your hwy cruising speeds as much so its a win win.
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