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06-02-2010, 12:26 AM
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#1 |
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Registered User
Join Date: Feb 2010
Location: San Marcos, Ca
Posts: 109
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1971 GMC C20 Swapping 350/350 to 454/400, lil help
I am upgrading my 71 C20 2wd longbed from a 350/350 to a 454/400
I was going to run the th350, but I removed the trans and dropped the pan, lots-o-metal in it, so on to the th400 I have the 454 upgrade info from this site (thanks everyone) but I need your input on the trans upgrade. What I know is...... there are three diff th400's, I have the short version. It came with the yoke I was told I need. Do I need diff linkage? shift rod? shorten driveshaft? anything else I am missing? On another note, I am looking for a blue steering wheel with a GMC horn button. I am cool with either the 67-68 style or the 69-72 style.
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Current stable: 1970 K5 Blazer 4x4 1972 K5 Blazer 4x4 SOLD: 1971 GMC Sierra Grande 2500 2wd 1972 Chevrolet K5 Blazer 1966 Chevrolet C20 1972 Chevy Suburban 4x4 1500 1956 Chevy 150 2 door post 1956 Chevy 2 door post bel air 1968 Chevrolet C20 1958 Ford Thunderbird 1968 4x4 Suburban 1/2 ton |
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06-03-2010, 10:20 PM
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#2 |
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Too Dumb To Know Better
Join Date: Nov 2005
Location: Texas
Posts: 882
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Re: 1971 GMC C20 Swapping 350/350 to 454/400, lil help
You will probably need to shorten the driveshaft. Other than that, you should be good to go.
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