2005 with A4

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Oct 22, 2010 | 09:28 AM

JohnAlley

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Joined: Mar 2009

Posts: 503

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From: Rochester Indiana

2005 with A4

I am just starting to run the drag strip with my 2005. I have added cam, heads, headers and vararam intake. I am running 11.7's in the quarter with 60' around 1.6 - 1.7. The car now has a 3.15 rear end. Want to go with a 3.42 or 3.73 what would be the best to go with ? I also drive the car on weekends and take it to car shows.

Oct 22, 2010 | 12:28 PM

LS1LT1

Team Owner

Joined: Feb 2001

Posts: 27,231

Likes: 119

From: Short Hills, NJ

Quote:

Originally Posted by JohnAlley

The car now has a 3.15 rear end. Want to go with a 3.42 or 3.73 what would be the best to go with ?

I personally would have to recommend going with the 3.73s, you give up a slight amount of fuel economy over the 3.42s (a little more yet over your 3.15s of course) but the gains are worth it in my opinion, especially in a cammed car.

I assume that you're still using the factory/stock torque converter?
If so, swapping that out for a good aftermarket one will net you even the bigger gains in 1/4 mile as long as you're using a drag radial (or slicks).
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Last edited by LS1LT1; Oct 22, 2010 at 01:21 PM.

Oct 22, 2010 | 01:00 PM