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08-30-2006, 08:39 PM
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#1 |
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Registered User
Join Date: Aug 2006
Location: Wabash, Indiana
Posts: 100
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need help fitting bigblock 4x4
need help has anyone put a big block in a 67-72 4x4 trying to build 68 sub 4x4 502/400/205 what engine cross member do i use
Last edited by Joe Gribben; 08-30-2006 at 08:59 PM. |
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08-30-2006, 09:20 PM
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#2 | |
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Registered User
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
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Re: need help fitting bigblock 4x4
Quote:
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'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!! |
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08-31-2006, 01:16 AM
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#3 |
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Registered User
Join Date: Feb 2004
Location: Tacoma WA
Posts: 1,365
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Re: bigblock 4x4
Joe - GM did not build a BB 4X4 until 73 plus. Try to find a 73 + cross member.
Use search to contact LIVERAT - the early (67-72) BB 4X4 guru. He can set you straight. Good luck and have fun - Bob
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67 C-20 LWB, tilt, speed alert, vac, 454, T400 67 C-10 SWB, factory air with more to follow |
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09-01-2006, 12:13 AM
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#4 |
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Registered User
Join Date: Jun 2004
Location: Beeville, Texas
Posts: 1,943
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Re: bigblock 4x4
My Suburban had a 350, someone took it out and put a '79 GMC 454 in it and made a crossmember from scratch out of 1/4" steel plate and reinforced the heck out of it. I wish I had a camera so I could get some pics of it. They did use the factory holes in the frame for the original crossmember though.
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RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck |
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09-05-2006, 11:10 AM
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#5 |
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Post Whore
 
Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,686
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Re: bigblock 4x4
I used the original crossmember but if I did it over I would use the 73-up crossmember. Using it and a bit of a body lift often times allows the engine to fit with minor firewall modifications.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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09-05-2006, 04:43 PM
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#6 | |
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Registered User
Join Date: Apr 2003
Location: Central PA....In the Berg of Nisbet
Posts: 790
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Re: bigblock 4x4
Quote:
They didn't hack up the firewall at all when they put that one in the truck I have..........It was tight, but wasn't touching the dist.
__________________
'72 K-20 EFI'ed 250 Inline/4spd stake body, Farm Truck '71 C-20 Cummins Diesel Powered, In storage thanks to $5.00 diesel! '69 3500 GMC 305V-6/4spd, Still under reconstruction.......... Inlines Rule! 6 soldiers standing is better than 8 laying down!!!!!!!! |
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