1970Duster
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- Joined
- May 30, 2010
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I post under general because it involves both sb and b/rb. I does anybody know the weigh of the factory rotating assembly of a 68-70 340? How about a 273, 318-360-383-400-426 (both wedge and Hemi) and the 440? When compare the weight of the factory rotating assembly to an aftermarket one (be it h beam or I beam) you still come out lighter! I have a forged eagle crank forged eagle h beam rods (am sure this part makes me about equal to factory) and to top it off I have ross racing piston which are forged aluminum and I can say without a question are much much lighter then factory (oh and total seal gapless piston rings).
Now I do understand the h beams weigh more then I beams and if you going all out racing lighter is better, but what I don't get is that "h beams put more stress on the block/rotating assembly then an I beam" but again when you compare the weight of the factory stuff to aftermarket stuff how does this put more stress on the block?!?! I don't get it, please I dearly need enlightenment on this one:banghead:
This all started because of an arguement this guy I know was how he is building a 2000hp superchargered motor and lighter is better while I was trying to point out that, at that level you want more strength vs a lighter assembly.
Now I do understand the h beams weigh more then I beams and if you going all out racing lighter is better, but what I don't get is that "h beams put more stress on the block/rotating assembly then an I beam" but again when you compare the weight of the factory stuff to aftermarket stuff how does this put more stress on the block?!?! I don't get it, please I dearly need enlightenment on this one:banghead:
This all started because of an arguement this guy I know was how he is building a 2000hp superchargered motor and lighter is better while I was trying to point out that, at that level you want more strength vs a lighter assembly.