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04-02-2007, 08:41 PM
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#3 |
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Guest
Posts: n/a
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Raw GM crank forgings are shipped directly from
GM?s foundry to Crower. Stock GM part number is forged into the counterweight. Features include lightening holes and O.D. trimming that reduces weight by 4 to 5 lbs under stock. Crower race-prep includes 1⁄8 radii and Crower heat-treat. Thorough magna-flux inspection, chamfered oil holes, end-to-end index check and polishing come standard. Crower even straightens them so you don?t have to. Complete stock legal engine kits also available. WEIGHT: 51 lbs (4 to 5 lbs under stock GM weight This is the "Stock Plus" crankshaft. Why would NHRA allow "lightening holes and O.D. trimming that reduces weight by 4 to 5 lbs under stock"? Is there a limit to OD trimming? If OD trimming why not all the other mods in the other series (eliminate center CW, profile milling, wing contour, etc.)? NHRA #7494 SS/H 1970 AMC AMX 390 "Best Appearing" @ NHRA '06 Pacific Sports Nationals Arizona's BEST Realtor supports racers! Now celebrating 14 years as a Realtor, Call me @ 602-418-9797 or JeffLeeAzRealty@Qwest.net |
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