posi-rearend
Thread Starter
Member
Joined: Mar 2010
Posts: 139
Likes: 0
From: slater sc
Car: 1989 camaro iroc
Engine: 350 tpi
Transmission: auto
Axle/Gears: 323
posi-rearend
i have a 305 tpi with 3.27 rear non posi will a posi-rearend make a BIG CHANGE or not. I am going to build a 350 tpi soon .
Supreme Member
iTrader: (3)
Joined: Jun 2007
Posts: 2,359
Likes: 5
From: Pennsylvania
Car: 1992 Camaro RS
Engine: Rebuilt 350 going in after paint
Transmission: WCT5, 7k & counting behind the 350
Axle/Gears: 4thgen disc rear w/ 3.73 Posi
Re: posi-rearend
Changing your gear ratio to a 3:42 or 3:73 would produce a more noticeable difference than just swapping to posi. Although I don't know if the 305 has the torque needed to really take advantage of the 3:73 ratio.
Joined: Sep 2005
Posts: 27,916
Likes: 2,447
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: posi-rearend
If you have the 3.27 gears, it is almost certainly already a posi, as that's a 9-bolt ratio, and virtually all of those had it.
Furthermore, you already have a pretty decent gear for the RPM-limited TPI system. There is very little bang for the buck available there. WAY too much maze, WAY not enough cheeze.
IMO your greatest opportunity for improvement ATM, for the cheeeepest, lies in reversing the last 2 digits of your engine size.
Furthermore, you already have a pretty decent gear for the RPM-limited TPI system. There is very little bang for the buck available there. WAY too much maze, WAY not enough cheeze.
IMO your greatest opportunity for improvement ATM, for the cheeeepest, lies in reversing the last 2 digits of your engine size.
Thread
Thread Starter
Forum
Replies
Last Post
