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Click on image for the lowdown. 
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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!
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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: Nov 2004 Posts: 117 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2004 Posts: 117 | 52pu,
Just fired up my new 261 with the Offy intake. I spent the better part of 4 hours grinding, filing and fitting the manifold to fit the headers. You'll have to grind front and rear. I have the Langdon water heat plate and had to grind a ton on it to get a fit. The real thing is to make sure the intake ports fit fluch against the head on the bottom side. I used a shop light to make sure I had "daylight" everywhere.
cgresham1212
If you don't drive it, why have it?
55 1st Series 3100 5 window
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