02-21-2004, 06:03 PM
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CC Member
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Join Date: Apr 2003
Location: Central Texas,
TX
Cobra Make, Engine:
Posts: 88
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Not Ranked
3.98" stroke crankshaft identification.
"1UA" on the crankshaft is SCJ while "1UB" on the crank is typically CJ. The "1UA" crank only has six counterweights while the "1UB" has seven with the seventh being towards the center of the crank and being smaller than the others. This seventh counterweight eliminated the need to use the cookie cutter weight that hangs behind the damper on the SCJ. The "1U" cranks also have seven counterweights on the crankshaft versus the normal six seen on most others including the SCJ. The "1UB" cranks have slightly heavier counterweights than the "1U" cranks to accommodate using heavier connecting rods and/or piston combinations.
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Ted Eaton.
Fe's are fast but "Y-Blocks" are fun when they run in the 9.60's at 135 mph.
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