SKCHEEE

Hey everyone I have a 2002 c5 with cam fast intake headers and I just bought a set of 3:42 gears and yank SS 3200 stahl convertor my problem is the install kit for the differential is on back order and may be 3-5 months my buddy was putting stahl and gears in for $1000 and I would have 600 in gears,install kit . Or should I take it to RPM TRANSMISSION. For around $2000 and that's including them slapping my convertor in while they already have everything apart . My next question is would it be worth all that money to go from a 3:15 to a 3:42 ??? Or would a 3:15 gear and a Yank SS 3200 stahl be a good combo ????

onlyavette

I would advise you to ignore the previous responses and just get the correct converter to get the stall rpm you are after. Keep in mind that a 3200 rpm stall with 3:15 gears won't give 3200 rpm stall with 3:42 gears. If you change the weight, gear ratio or torque/hp output you will get different stall speeds with the same converter.

I don't see much value in changing from 3:15's to 3:42's. Do you plan on changing the rear tire diameter? Lots to think about before you drop your hard earned money down.

cvm

there is value goin from 3.15 to 3.42 but It Aint Much!

SKCHEEE

I have changes the rim size on the rear I'm running a 19x10.5 with a 305/35/19 Mickey Thompson drag radial and that was more of my concern if it would make that big of a differnce to spend the money and switch to a 3:42 gear and also I don't plain on drag racing the car just playing around on the streets nothing serious I just want that combo with the stall and gears to be perfect !!!!

onlyavette

3:73, 3:90 or 4:10 depending on the tire diameter. Not that much of a change from 3:15 to 3:42. We're talking 125 rpm's at 60 mph and 300 rpm's at 120 mph.

The rim size doesn't matter. The outside diameter of the tire does though.

You are obviously drag racing so you need to consider the trap speed rpm. What rpm are you wanting to hit when you enter the traps? Select the tire diameter, gear ratio and stall speed that will work best with you engines h.p. and tq. curves.

The people you are getting your converter from should be able to help you with all of these decisions.

onlyavette

I didn't see the note about playing on the street. In that case it really isn't worth changing the gear. Difficult to hit "perfect" if you don't have a specific goal in mind. Playing around on the street is not a clear goal. To some that could mean laying down the longest patch of rubber ever seen in you part of town. I play around on the street sometimes in my fully restored Yugo Sana.