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che57vy
    
When to use a 153 tooth versus a 168 tooth flexplate for a small block chevy engine ?
I am a little confused about what small block chevy engine applications use the 168, versus the 153 tooth flexplate ? Does it depend on the year or the "generation" of the block ? If so, does the crankshaft play a part as well, or will the crankshaft always have the proper flexplate bolt-up hole configuration for the "generation" of small block engine that it is intended for ?

T H A N K S . . .
posted: June 24, 2011
 
    
 
  Answers (1)
 
retiredpartsman
    
the 153 tooth uses the starter that has a long and short bolts that are in line with back of block.used on 230-250 262- 283- 305 -327 engines...the 168 tooth uses a stagared bolt pattern and is also used on some 6s as well as 8s it has more cranking power than the small flywheel... the 400 smalll blaock flywheel has a weight on it for balamce..in86-87 the crank was changed to have a 1 piece seal on the rear main and the bolt pattern was made smaller.
posted:  June 24, 2011
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