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Re: What? oh okay.....this is why you run a big block!
WOW-looks like great performance from that big block! I have a 74 454 bored 60 over with 781 truck heads. Everything was rebuilt and balanced to the 74 specs.( about 8:1 comp ratio). I put in a comp cams XE262H-10 with the matching springs and 7/16 push rods and roller tip rockers, edelbrock rpm manifold with a new edelbrock 750 electric choke carb, headers and an HEI ignition( China made). It is coupled to a fresh turbo 400 with a 3:23 rear end.
My truck does not perform anywhere close to your ride. Does a roller camshaft make that much difference in over all power? I should be able to spank the tire too( open rear) but nothing like what you have. Any ideas on something in my set-up I might have missed? Sorry to high jack your thread but your truck gets it on! 
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Steve
69 3/4t custom camper
tilt,am/fm,speed warning,air gauge,buddy buckets,aux battery, big block,p/s,p/b,a/c
67 Camaro
96 Impala ss-sold
04 hybrid Honda-saving gas for the blue truck!:b69:
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