3.90s!!! Or 4.10s they say you can do 140ish in 3rd on 4.10s in my truck I shift to 4th usually so dunno how tall 3rd is exactly on a 29" tire as well...
Im at a high rpm on the hwy but not to bad...
3.90s!!! Or 4.10s they say you can do 140ish in 3rd on 4.10s in my truck I shift to 4th usually so dunno how tall 3rd is exactly on a 29" tire as well...
Im at a high rpm on the hwy but not to bad...
I have the 3.73 with 30 in tires great gear compared to my brothers 3.42. I'm currently having them swapped to 3.90 and going to a 31 in tire for the street and 28 in for the track. In relation to the 30 in tire with the 31 in the 3.90 should be the same rpm/mph as a 3.73 and the 28 in should be the same rpm/mph as a 4.10. Go with the 3.90
'02 GMC RCStepSide 4.8 , Thumpr Cam , 3200 Stall , OBX LTs , MSD Wires , TrueTrac , 4.10s , 3/5 Drop , bolt in traction bars by LSX Powersports , EFI Live tune by LSX Powersports
15.2 @ 90 , 2.3 60' (Only mods at this time , LTs)
Yeah i mean it gets up and goes great with the 3.42's, so i will stick with goin to 3.73's and 28" tire for now. I mean damn 4.10s or lower i will probly end up pooing on myself.
I went from 3.42 to 3.90's and love them. But sometimes I still think I should have done 4.10's. Do at least 3.90's or stay lame at 3.42.
2002 Under Construction Again!
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