Originally posted by rifraf
500 horse on a stock bottom end ,yea,sure for how long,one run. Better take the money you saved and buy a good scatter shield to protect you from the turned down cast crank .400 ,yea ,Ill bite but come on.
You obviously dont know WTF you are talking about. The crank is not turned down .400. If you are going to give advice, at least do some homework first. I could tell you what the numbers are, but it would be a good excercise to find out yourself.
The stock parts should be fine on the 425 HP range engine. I would also not just toss the double hump heads. They make great torque and are killer street heads. I have a set that are pocket ported and gasket matched on my 400 SBC. I run a pretty fat cam to help make up for the flow on the heads, and it is a very respectable engine. I have never dynoed it, but I would put it in the 375 HP range or maybe a little more.