[DeTomaso] differences between flywheel

[JDeRyke at aol.com]

In a message dated 1/7/09 2:03:32 PM, detomaso at luleweb.se writes:

> What are the differences between 351C BOSS, HO, CJ and 4V flywheel?
> 
None that I know of. They are all cast iron, 164 tooth, 28 in-oz external 
balence, same part number and bolt onto any of the Clevalands as well as the 
351W. The only 'difference' I was able to find is, the balence factor was 
originally 28 in-oz and somewhere along the line, it changed very slightly to 28.2 
in-oz. Those flywheels are characteristic of all stock flywheels from the period 
by Ford, GM and Chrysler, that are well known to shatter at very high rpms. In 
fact, they drove NHRA's push for mandatory scattershields for sanctioned drag 
races. At least one Pantera was very badly damaged in a sanctioned drag race 
in the early '80s by an exploding flywheel that tore big holes in the left 
rear fender, decklid and subframe. No one was hurt due to the engine placement 
but in front-engined cars, drivers lost their feet in flywheel explosions- 
including Don Garlits! So if you still have the stock one, no high rpm racing and 
especially, no missed shifts at high rpms! Aftermarket steel or aluminum are 
much stronger but still need scattershields for competition. Good luck- J DeRyke



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