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Russ65C10 · 03-16-2010, 12:04 PM

If your really planning on dropping a 700R4 in (you love it if you do), I'd stick with 3.73's. I have a 65 that came with 283/powerglide and 3.73 limited slip rearend. Dropped a 700R4 in I cruze down the freeway at 65 mph cranking 2200 rpms 85 mph = about 3000 rpm.

BTW - I am not knocking 3 autos but I ran a TH350 for a while before I dropped the 700R4 in, didn't really see a big advantage, I go over hill on my daily drive and I found the powerglide actually provided more engine braking than TH350 and I didn't see any noticeable improvement in accelleration or hillclimbing ability. Of course it could've been that I pulled it out of junked 80's malibu ;-0

03-16-2010, 12:04 PM	#5
Russ65C10 Registered User Join Date: Jan 2010 Location: San Jose, CA Posts: 124	Re: what rear end ratio for 327/Powerglide If your really planning on dropping a 700R4 in (you love it if you do), I'd stick with 3.73's. I have a 65 that came with 283/powerglide and 3.73 limited slip rearend. Dropped a 700R4 in I cruze down the freeway at 65 mph cranking 2200 rpms 85 mph = about 3000 rpm. BTW - I am not knocking 3 autos but I ran a TH350 for a while before I dropped the 700R4 in, didn't really see a big advantage, I go over hill on my daily drive and I found the powerglide actually provided more engine braking than TH350 and I didn't see any noticeable improvement in accelleration or hillclimbing ability. Of course it could've been that I pulled it out of junked 80's malibu ;-0 Last edited by Russ65C10; 03-16-2010 at 12:09 PM.