Quote:
Originally Posted by zraffz
Have seen many ten and eleven second cars at the track running cast cranks. Really, even online the only times I've heard of a crank getting destroyed was with forced induction but yet I've seen rods snap in half on higher rpm motors.
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I am not saying you are wrong, just questioning the pricey rods on a cheap crank.
Granted I am coming from LT1 land, which is mainly dumb people, but cast cranks seem to snap frequently IF they do not get the correct prep work by machine shop. And its not just FI builds, I have seen a few NA builds snap em as well. Comes down to home much money you wanna spend on top of crank cost to get em balanced well and in tolerance for assembly.
Just to clarify, its not assuming casts are bad, just stereotyping that they are cheap due to lack of QC.
And for the pricey, high HP rods, you are throwing some serious weight on a cast crank, I am no expert but assume thats part of the puzzle here to be considered. From LT1 land, stock rods are fine to past 6500 area, but the rod bolts are weak and allow bearings to spin. So a cheaper I rod with quality L2000 or whatever the ARP kind of rod bolt in em may work better.
Take it as you will.