Automatic with 2.73s or with 3.373s
Automatic with 2.73s or with 3.373s Would it be a waste of time to put in 3.73s in my stock trans am. I am pretty sure right now it has 2.73 gears it being an automatic. Would i just sit there and blaze the tires or would it really help out in acceleration.
Originally Posted by BigPlanTransAm
if its a WS6 it has 3.23's. if not it has 2.73's
and i would go with a converter instead of gears but either way you would need some better tires.
and i would go with a converter instead of gears but either way you would need some better tires.
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TECH Enthusiast
Joined: Mar 2004
Posts: 647
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From: Australia
3.73 is optimum on stock converter for street driven A4s. You wont blow off the tyres from a flash at the track either.
If you go a converter, there is no difference between 3.46 and 3.73. 3.73 MAY give you a slightly higher trap speed - but thats about it.
If you go a converter, there is no difference between 3.46 and 3.73. 3.73 MAY give you a slightly higher trap speed - but thats about it.
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Originally Posted by MNR-0
3.73 is optimum on stock converter for street driven A4s. You wont blow off the tyres from a flash at the track either.
If you go a converter, there is no difference between 3.46 and 3.73. 3.73 MAY give you a slightly higher trap speed - but thats about it.
If you go a converter, there is no difference between 3.46 and 3.73. 3.73 MAY give you a slightly higher trap speed - but thats about it.
I prefer my 4.11s in the automatic anyway.
TECH Enthusiast
Joined: Mar 2004
Posts: 647
Likes: 0
From: Australia
Steady on the saccharin there DietCoke. 
Proven fact that either 3.73 or 3.46 with a converter will result in negligible differences at the track. Ive proved it. Many others here in OZ have proved it and so say PREDATOR, JRP and COLONEL (just do a search on diff gears and 3.46 or 3.73).
Now with a stock converter the difference is more noticable - just more free revving and its easier for the low TQ to drive through the converter stall.
The general rule is the more power you make the lower the diff ratio you need.
Ive had both 3.46 and 3.73 and for a stocker bolt-on A4 3.73 is optimal for a street/stripper. Strip only and I would probably go 3.91 or 4.11.
Proven fact that either 3.73 or 3.46 with a converter will result in negligible differences at the track. Ive proved it. Many others here in OZ have proved it and so say PREDATOR, JRP and COLONEL (just do a search on diff gears and 3.46 or 3.73).
Now with a stock converter the difference is more noticable - just more free revving and its easier for the low TQ to drive through the converter stall.
The general rule is the more power you make the lower the diff ratio you need.
Ive had both 3.46 and 3.73 and for a stocker bolt-on A4 3.73 is optimal for a street/stripper. Strip only and I would probably go 3.91 or 4.11.
Originally Posted by MNR-0
Steady on the saccharin there DietCoke.
Proven fact that either 3.73 or 3.46 with a converter will result in negligible differences at the track. Ive proved it. Many others here in OZ have proved it and so say PREDATOR, JRP and COLONEL (just do a search on diff gears and 3.46 or 3.73).
Now with a stock converter the difference is more noticable - just more free revving and its easier for the low TQ to drive through the converter stall.
The general rule is the more power you make the lower the diff ratio you need.
Ive had both 3.46 and 3.73 and for a stocker bolt-on A4 3.73 is optimal for a street/stripper. Strip only and I would probably go 3.91 or 4.11.
Proven fact that either 3.73 or 3.46 with a converter will result in negligible differences at the track. Ive proved it. Many others here in OZ have proved it and so say PREDATOR, JRP and COLONEL (just do a search on diff gears and 3.46 or 3.73).
Now with a stock converter the difference is more noticable - just more free revving and its easier for the low TQ to drive through the converter stall.
The general rule is the more power you make the lower the diff ratio you need.
Ive had both 3.46 and 3.73 and for a stocker bolt-on A4 3.73 is optimal for a street/stripper. Strip only and I would probably go 3.91 or 4.11.
The little negligible differences are what make a winning combination. They add up.