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Old 05-11-2003, 08:05 PM   #2
hobgoblin351
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Join Date: Sep 2002
Location: NYC
Posts: 245
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For a street/strip car leaning to more street. I thought the duration on the Crower was fine. The lift could have been higher. I just looked at the specs for the Comp Magnum and the Comp X-treme. They're about the same as the Crower but with more lift. Unless you're going to bump the duration at .050 up into the 240*/250* range they're all very closely matched. I'd go with the more lift. If you start going higher in dur, say to 240* and up streetability starts to become ann issue. Everything else aslo has start being upgraded. Higher compression, bigger valve springs, stronger pushrods, high stall convertors, headers and exhaust. It's a tuff call because you're right on the egde. Good luck
__________________
1970 Stang Conv:
en:Boss351 (balanced/blueprinted)
mech cam(240*@.050/.540 lift)
Scrw in studs/comp cams rllr rkr
Mldn valves 2.19in 1.71ex
ported polished cc'd hrdnd ex
Keith Black FT pistons(10.25/1)
Weiand Excellorator manifold
Holley700 DP mech 2nds
MSD 6 box and Dis
Headers/2 1/2 inch duels
tr: modified FMX
re:9-inch/3.89 limited slip
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