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Click on image for the lowdown. 
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| | | Forums66 Topics128,030 Posts1,055,428 Members48,422 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | I put a 454 in a 67 GMC one time in place of the V-6. I had problems getting exhaust to clear the frame, but that was about the biggest hurdle. Not sure but I think the frames on the 66 and the 67 are close to the same size.
I also had to rework the fron engine mounts, but don't remember that being a big ordeal either.
Good luck. | | |
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