oh and rob18 by all means i wasn't questioning your opinion about the 6" rods. I was just curious as to why the longer rod is easier on the cylinder wall. just trying to learn a thing or two :P

 

Go forged, if your gonna boost go with a lower compression,stay away from KB hypers. Some good companies are Mahle( one of the best,very strong and light), Speed pro power forged( very good cheap piston), JE, Wiseco(has been getting better everyday), SRP.

Rod length vs stroke ratio= A longer rod will put the pivot point(wrist pin) higher in the piston, pushing it from a more centered position.

Here is one thing you definetly need to look for with a 383... Internally balanced. If you get a crank thats internally balanced you will make life so much easier for youself. Externally bal will require both a weighted flywheel and harmonic balancer. Which puts more stress on the snout and flange of the crank. The design of the 3.75 crank leaves the snout weak. The circle track builders have started using lighter balancers and that has helped as well. I was running one a couple of years ago and just knew it was gonna blow. 8150rpm at the end of the straight! With the new setup she held together quite well. It actually dropped a valve after almost a whole season. I sold it to a guy who dropped it in a 3rd gen and its still going.

 

just found this read...https://camaroforums.com/forum/engine-internal-23/crankshaft-nose-failure-18366/