Quote:
Originally Posted by scott70
I’m still waiting for a driveshaft to get delivered so I can try out my close ratio tkx with .81 OD with a 3.31 rear. My m21 has 2.20 1st gear and was decent to drive around but would be much better with a steeper 1st gear. I think this new setup will be much more pleasurable to drive and also help with my 60 fts. at the track. .81 of should knock the rpms down around 550 rpm’s at 60 mph. All sounds good to me. Why Pontiac didn’t put the m20 in the 455 70 gto is weird. The 2.20 with a mild rear sucks. I wouldn’t go close ratio tkx and a 3.73 rear… don’t think you need it that steep.
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Obviously, that's the set up that I have. I think it's near perfect. It's like having a M20 with a 3.77 rear gear in first and 2.68 rear gear in 4th. I think you're gonna love it.
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70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear
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