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LS short box · 02-05-2021, 05:34 PM

I have 4:10's in my LS swapped 68 C10. I choose the 4:10's because I installed a T56. I now have a 4L60E in the truck and I would go with 3.73 if I was to do it again. The 4L60E or 4L70E a have pretty low first gear so you should have good performance off the line.

02-05-2021, 05:34 PM	#9
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 1,943	Re: Best highway RPMs I have 4:10's in my LS swapped 68 C10. I choose the 4:10's because I installed a T56. I now have a 4L60E in the truck and I would go with 3.73 if I was to do it again. The 4L60E or 4L70E a have pretty low first gear so you should have good performance off the line.