best rear-end gear for TH-700R4/28" tire combo? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

glock35ipsc · 11-03-2008, 02:16 PM

My 68 currently has a 3.08 rear gear as I was originally going to run a TH-350. Now I am going to use a TH-700R4 and was wondering if I should stick with the 3.08, or go with 3.73, or even 4.11? I have read on some other forums that 4.11 would be too much with the 3.06 1st gear of the 700R4.

I am running a mostly stock 350 crate motor with a small Comp Cams stick, a 600 Edelbrock, and a 28" rear tire. Since it is not a hot motor, I just want good bottom end (for the motor I have) and good highway driveability.

11-03-2008, 02:16 PM	#1
glock35ipsc Next project: 1970 K10 Join Date: Feb 2004 Location: Fort Collins, Colo 80524 Posts: 6,684	best rear-end gear for TH-700R4/28" tire combo? My 68 currently has a 3.08 rear gear as I was originally going to run a TH-350. Now I am going to use a TH-700R4 and was wondering if I should stick with the 3.08, or go with 3.73, or even 4.11? I have read on some other forums that 4.11 would be too much with the 3.06 1st gear of the 700R4. I am running a mostly stock 350 crate motor with a small Comp Cams stick, a 600 Edelbrock, and a 28" rear tire. Since it is not a hot motor, I just want good bottom end (for the motor I have) and good highway driveability. __________________ *Bob* 1970 Chevy K10 LWB "Goldie" 350/TH350 *next project!!* 1981 Chevy C10 LWB 355/TH350 - My son's truck LS SWAP FORUM! Tons of LS swap info here! PLEASE CLICK HERE TO SUPPORT THE GREATEST BOARD ON THE NET! CLICK HERE FOR THE FAQ INDEX by KRUE

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