428 powered highboy
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428 powered highboy
hi, i was just wondering an estimate of horse power and tourque of a 428 with a rv cam, d2teaa heads with the bigger valves and porting, high comp pistons, and preformer intake with 750 edlbrock carb ? also has headers too. thanks
Fleet Mechanic
Joined: Jun 2011
Posts: 1,804
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From: Southern California
Hey. Ive got a 428 in my highboy. Built it and put it in about 6 months or so ago. Its 40 over, 10.5:1 compression, ported heads, edelbrock rpm intake, and has a 770 carb on it. Just a hydraulic flat tappet. I get around 450hp from it. I could have gotten upwards of 600 but with a auto tranny and needing to tow that wasn't an option.
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