Sint3k

Anyone have any information on how to change the pcm to adjust for different final ratio on my new transmission? I'll be using hp tuner software, thanks

08 pimpala ss

What gear ratio did u go with?
Its super easy click on speedo and its right there

Sint3k

My overall ratio will be 3.11:1 , That was the only chain that was available. I could of gotten a 2.93 but wanted better acceleration. I can handle wheel spin with the throttle input. Thanks , i've not actually received the software yet , just trying to get a jump on things. Thanks as usual 08 pimpala ss

x11 nut

iTrader: (3)

Hey man, you sure on the 3.11:1 ?? Doesn't ping as a standard ratio..

91parkave

iTrader: (4)

2:93, 3:29, or 3:69

Sint3k

I'm positive , and its not a standard ratio , its a GM racing chain that is making that final ratio with

GM Racing 1" chain set is a rare combination that gives you 36 drive / 34 driven (36/34 = 1.059) so 3.29/1.059 = 3.11:1 which is my new overall gear ratio

91parkave

iTrader: (4)

You didn't get the inputshaft to go with it?

Sint3k

Yes , i got it
its a 300 Maraging steel Input shaft was expensive lol

Sint3k

The chain , input shaft , and Torque converter alone where 3000 $

91parkave

iTrader: (4)

300m is a Zzp item gm offered the aeremet input shaft.

People still shear 300ms at 500wheel if there not careful

Sint3k

Yes , but they don't make them anymore and i could not find one. So the 300m will have to do.