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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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#53534 12/16/2005 3:53 AM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | Go to www.mortec.com and www.nastyz28.com/sbchevy/sblock.html for engine numbers. Pickups got both 2 and 4 bolt mains. Early on the 4 bolts went in bigger trucks, where they were needed due to the high loads incurred at low rpm. There is actually a growing group of rodders using the 2 bolt engines for performance. I haven't seen the stats, but the 2 bolt is supposed to be superior for a high performance street engine. My buddy is building a 2 bolt 400 inch with around 500 ponies.
Fred
52 3600
69 C-10
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