im going to change the pumpkin from my 84 and put a lsd one what kind of oil should i use for the best performance

 

Only the best......www.redlineoil.com

 

I second that. It isn't cheap, but it's worth every penny. I use their MT-90 in my trans, and would use the 75w90 (which has the Limited Slip additive already in it) in the diff if I had an LSD.

Jon

 

Royal Purple because it was available.

 

i reccomend redline shock proof heavy formulation and some lsd additive from gm. Or use the redline rearend break-in additive, it helps lower diff temps. Either way add a 1/4 bottle till all the chatter goes away. I am really hard on drivetrains,ex. i go through a trans about every 3 months, and have yet to have rearend problems.

 

^^ Holy crap at the 3 month trannies

I stuck with Royal Purple all throughout my car, from radiator coolant to rear end oil. Never been happier. I would have gone with Redline if given the chance, but none was near me that I could pick up.

 

sheeww.... Have you thought of a T2 tranny? Could save you some headache.

 

I have the shifter rod already made to intall a TII. But i am waiting for my clutch to go first. I've also been getting alot of NA trans for cheap due to all these 2nd guys in atlanta area doing ls1 swaps. It only takes maybe a hour to swap out. We will see how well the NA trans holds up to the new turbo, im hoping it just kills the tires and saves the trans.

 

yeah have never had good luck with anything from royal purple. i agree with the shockproof though