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**kwmech** · 02-01-2018, 08:22 PM

I used to have a different suburban I had regeared to 4.10. Wasn't enough with the tire size, weight of the 'burb and an overdrive trans. Of course I had 3.73 in that one also, so it was only a 9.1% difference. I was also towing a small travel trailer (26') at the time. It will definitely be 4.56s this time.

Look at the spid on the glove box door if it is still there. It will be a G code like GT4 (which is 3.73) or something similar. G80 is posi

02-01-2018, 08:22 PM	#14
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,402	Re: New to squares I used to have a different suburban I had regeared to 4.10. Wasn't enough with the tire size, weight of the 'burb and an overdrive trans. Of course I had 3.73 in that one also, so it was only a 9.1% difference. I was also towing a small travel trailer (26') at the time. It will definitely be 4.56s this time. Look at the spid on the glove box door if it is still there. It will be a G code like GT4 (which is 3.73) or something similar. G80 is posi Last edited by kwmech; 02-01-2018 at 08:35 PM.