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| | | Forums66 Topics128,127 Posts1,056,680 Members48,452 | | 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
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Jun 2010 Posts: 301 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 301 | OK, I picked my next restoration project. It's all original and I'd like to keep the 307 but wouldn't mind a little performance boost. I have a set of 327 heads #3782461 (64cc 1.94'" intake valve, 1.5 exhaust valve) laying around and was wondering if that would be an improvement. The original heads are 3927185 (70cc 1.72 intake and 1.5 exhaust valve. My thinking is the smaller chamber and larger valves will be a performance improvement. Also looking at dropping on a 4 barrel intake vs the 2 barrel intake with a quadrajet. Thoughts on this guys?
1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado
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