Going by our history the caps will outlive the crank,I don't think you will have problems at the 500hp level.Bill
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Hendrens Racing Engines
1310 U.S. Hwy 221 North
Rutherfordton N.C. 28139
828-286-0780 Bill, Steve, Mike
Agree:
I would be scared to put much more on that crank that it has now. Even the facotry Chevy Cast crank is stronger. The suggstion is before you start trying to get more power is to put a good 4340 steel crank in it.
That block is very strong. I have done above 1,000 hp with it just with a bottom Hard Block fill. That was probably not even necessary for strength. I have heard of guys getting them to live at 1,500 hp but I have only gone a little above 1,000 hp. That was many years back.
If you keep the stock stroke the 2 bolts will be fine.
Ed