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Mod | | | Forums66 Topics128,185 Posts1,057,279 Members48,467 | | 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!
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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!
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#79236 06/26/2007 7:07 AM | Joined: Nov 2006 Posts: 84 'Bolter | | 'Bolter Joined: Nov 2006 Posts: 84 | what is the best way to get more power out of my in line 6 ? It is a 1948 GMC 228. The motor runs really well but on a slight up grade in 4th gear it will not maintain a constant speed. I am not looking to win any races but I would like to get a little more power out of the engine. I am looking into a set of Fenton headers and adding a 2 1/2 inch exhaust. Anything eilse you guys recomend?
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