Rep Power: 693

Hey! I was just wondering if any of you have any comments on an underdrive pulley kit? I have been having a hard time trying to locate one for sale for the 3.8L V6 engine. All I see are the ones for the LT1 engines (anyone have a link to one for sale?).
Also what do you guys suggest for new gears? I have the stock 3.08 gears, and I would like to get a lil bit more acceleration without going overboard, as I drive this car everyday.
Thanks in advance,
Dustin

 
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For the gears I'd get 3.42's if you plan on driving it on the highway.

I personally don't care for underdrive pullies. I have seen before and after dyno's with not even a 1hp gain on LS1's so I don't see the reason to spend all the money and time on one.

 
Rep Power: 895

Agree, Underdrive pullies arent worth much at all....useless really. As for gears 3.42s are fine 3.7s are good....4.10s are awsome just ull be filling up alot more haha and a loss in top end. I had 4.10s but sold em im putting in 3.73s now for college reasons.

 
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Yeah 4.10's are murder with a 3.8 and an auto. Most LS1 cars with auto's won't even go with 4.10's.

 
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3.42s if you drive a lot of highway... Thats what I plan on getting here soon and a posi for my next mod. If only I won the lottery....

 
Rep Power: 819

3.42's...3.73's can be a bit high if you drive it on the highway too.

 
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The magic number seems to be 3.73 with a LS1 A4. If you go budget on my car, people put 3.42 since it is the stock vette 6 speed gears.

 
Rep Power: 681

I put 3.42's and posi on my car and love it. I drive about 90% highway too.

As for underdrive pullies, to my knowledge nobody makes a set for the 3.8.

 
Rep Power: 693

alright guys thanks for the advice. Looks like I'll be getting 3.42's somewhere in the near future...hopefully. Thanks again.

 
Rep Power: 686

What did stock 1997 z28s come with? (gear ratio)

 
Rep Power: 707

3.42 i believe

 
Rep Power: 895

no, 2.73s or 3.23s.