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Old March 2nd, 2018, 04:50 AM
1972RedNeck 1972RedNeck is offline
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Join Date: Dec 2016
Location: Townsend, MT
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Default Re: 478 V6 Into '72 K20

Quote:
Originally Posted by bigblockv6 View Post
I've seen where the SAE bellhousing used on the 60-66 style trucks and there seemed to be enough space for it. The 67-72 style trucks are a lower profile design so most likely there wouldn't be enough space unless you did some modifying or a body lift. I stuck with the pickup style bellhousing and SM 465 trans on my 478 conversion and quite happy how it came out because I retained the stock appearance.
What did you do for rear end gears?

I would like to be around 2K or even less at 80 MPH. 3.54's, overdrive, and 34" tires works out to be 2100 ish RPM at 80 - not ideal, but 3.07's may be too fast. 1800 RPM at 80 and 1600 RPM at 70 - still not sure how it would be even with 530+ cubes... Might be alright - would probably be able to get some decent mileage numbers...

SM465 and a 3 speed Brownie would be cool - 24 possible gear ratios. I'm not sure I have room to get 4 shifter levers through the floor though...
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