f-bodybuilder

If my car's runnin a 15.9 in the quarter with my crappy 2.73's, what'll i be running with a 3.73 rear?

unvc92camarors

really, traction will determine if it will help any seeing as you need that to put the gears to use
but assuming you can hook up decently, i say anywhere from .2-.5 or so

lordmetalz28

really, has anyone had any firm drops by switching caus eim switching to 373 soon i have michellen pilots so ill have decient tractions

unvc92camarors

well, i think this could get more replies in the drivetrain forum
but, since you guys have autos, i think a higher stall converter is what a lot of people would reccommend

f-bodybuilder

haha my bad i have the engine tech forum set as my homepage and sometimes i forget there are other forums...... when my bro switched from 2.41's to 3.42's in his 77 firebird he went from runnin a 15 to a 14 flat. i was just wondering if the gains might be the same.

Willie

Have you found 3.73's yet? I just happen to have a set of GM 3.73's for sale. The GM's make absolutely no noise and are very hard to find.... Less than 20,000 miles.... I really like them but the reason I need to sell is because I went to 3.23's. Run out of top gear at around 115 mph with 3.73's (at the track of course!).

aklim

What do you have to have for it because someone I know of might be interested,

f-bodybuilder

Actually there's a ton of junkyards by where i live filled with thirdgens, so I'm gonna try my hand at finding a complete 3.73 posi rear before i spend the $$$$ to install some. Doesn't anyone have any times from before and after this same swap? There has to be SOMEONE.

AutoRoc

I did the 3.08 to 3.73 gear swap but did a lot of other stuff at the same time so I can't get you any solid numbers. I think you'll see a good gain only if you have enough traction. 3.42 would be a better choice I think. 3.73 seems to be too steep from the last 2 setups I had. I just went to a 28" tall rear tire and it's helped a lot to get me back down into the powerband if that makes any sense..haha

StalkerIROCZ

HOw much are you wanting for them? I have a rear end outta like a 83 or 82 Camaro its a 12 bolt with rear disce being the reason i bought it b/c Who ever bout my Iroc didnt get rear disc in the back BUt anyway i am interested in these gears So shoot me a price and if you could get me a part number so i can see if they will sawp out.