Cranks

[AL8001 at aol.com]

In a message dated 99-06-03 23:15:18 EDT, ECMnut at aol.com writes:

>A relative of mine builds Chevs & some SB Mopars
>for NHRA Super Stock class cars, and he insists that 
>the cast cranks flex less, resulting for more accurate
>spark/valve/combustion events from cylinder to cylinder.

Flexing could be tested with a torque wrentch and/or a long bar.  Fasten the 
crank at one end then turn the other. ( The crank may need to be placed on 
roller for a accurate test. )  As for a cast crank flexing less, stiffer 
sometimes means more brittle.   For short term use ( drag ) accurate timeing 
and such may outweigh frequent crank replacements.

Isn't the material for cast steel crank closer to cast iron than a high alloy 
steel?

Harold