prairieArrowLT1

what will the rpm's at 60mph be with a th350 and 3.42's, with stock size tires?
Also what is all neede for a th350 conversion?, a different driveshaft? transmission brace....I have a t56, just put a new clutch in, and I think something is wrong within the trans, so im thinking of taking it out

LT1Falcon

iTrader: (3)

ide say youd be at about 2700 rpms, maybe a little higher since no lockup

smoknta

If you get the correct length tailshaft, you can use the same length driveshaft.
The correct way to do it would be to get a switch kit from Tekpak Fitzall. This kit comes with an output shaft, and spacer. This allows you to run the tailshaft off of your exsisting tranny and use the same speddo sensor. That way you can use the same crossmember, same driveshaft, and the same speddo sensor.

This is the route I'm going.

Ray@Nitrous Outlet

if you want to know what it would be like to have it in your car...just drive it around in third gear...both trannys (th350 and 4l60E) have a 1:1 third gear

LT1Falcon

iTrader: (3)

yes thats true, thats how i came up with the 2700 number, but he said he has any m6 so should he use 5th gear? or is 4th 1:1

Ray@Nitrous Outlet

sorry missed the fact he was a T56...yes 4th gear is 1:1

LT1Falcon

iTrader: (3)

so use fourth gear and dont forget that the converter is gonna slip a little, especially higher stalls. there are some websites that allow you to punch in you configurations (tire size, gear ratio, etc) anf figure it out, but still remember the converter