Have to choose between a 602 crate motor, 6200 rpm 5.43 gear and an open motor, 7000 to 7500 rpm 6.00 to 6.50 gear which will produce the best performance ? I figure the cost is about the same because I have an open motor now that blew up. With the crate I would have to buy 4 barrel carb , different tranny coupler ect.
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