pinball-1

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

Mike Jones

iTrader: (1)

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.

SOMBirdV6

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.

Mike Jones

iTrader: (1)

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.

paarman97maro

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....

blue89vert

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

NCamaro94

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.

Shodown

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.

pinball-1

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

rickjames343

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

MyFirstCamaro

3.42 i believe

SOMBirdV6

no, 2.73s or 3.23s.