Quote:
Originally Posted by Adger Smith
Sorry Bill, but I think you are a little too anal about the rules. Yes, we can all read and like you can quote the rule book. Before bashing someone on being legal or illegal you need to know something about the components they are talking about. By your logic a rod that came in a 305 and was put in a 350 would be illegal when in fact they are the very same. The ONLY difference in a 350 and 305 crank is in the depth and location of the factory balancing holes. That is due to the slight (grams) weight difference in the 350 and 305 pistons. They both come out of the very same casting molds at the foundry. They are the same weight, casting number and dimensions. There is a BIG FAT "0" performance advantge. The only advantage is to the machinest that does the balancing with the approved NHRA component weights. Makes it easier Lighten up! No need insuating or calling a person a cheat!
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Adger
You are correct in saying that all these cranks are basically the same although came in different engines and by the rule book would be illegal to use in any application other than their own. A good example is using a 427 Chevy truck crank put into a 396 Chevy BB but I reread Charles Rainey's thread and I think what he is asking is, if you add heavy metal to a crank that is not changing from external to internal--is it legal to do so and let it be seen or do you need to hide it by welding over it. I have always welded over mine just to stay pot of problems with NHra, but is it ok just to add one slug of say 1/2" heavy metal and go own or should we hide it cosmetically. I think that his is a good question that we can answer.
reed