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Old 07-22-2026, 03:24 PM
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srmmmm srmmmm is offline
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Join Date: Nov 2021
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Originally Posted by napster1 View Post
Here are the details of the build using Butler Performance Ram Air Series cam - Roller 041
W72 988 block, .030 overbore for a 406 cubic inches, Stock crank, Eagle Forged H-Beam connecting rods, Forged TRW pistons, Holley Brawler 750 Double Pumper, Port matched Edelbrock Performer RPM intake manifold, Edelbrock performer RPM 72cc Heads (Ported), 10:1 compression, Butler's Roller 041 Cam, 1.65 scorpion roller rockers, Comp Cam roller Evolution lifters, round port Doug's headers 1 7/8th primary and 3.5 inch collectors. Exhaust is 2.5 inch mandrel bent pipes with an H-pipe thru Texas T/A mufflers. Estimated numbers are 450HP and 480TQ. Time constraints did not allow any dyno action.
Interesting comparison to my build:
1970 350 block bored .060 over, Eagle 4.25" crank, Eagle 6.8" H-Beam rods, Ross flattop pistons set at zero deck height, and 6X-4 heads for 413cu in and a 9.34 CR. Comp Cams XE276HR with 1.5 roller rockers, RA-IV reproduction intake and 800cfm Q-Jet. MSD billet distributer. Hedman long tube headers, Pypes 2.5" X-pipe system with transverse muffler. Dynoed 442 LbFt@4300 and 453HP@5600

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