FYI guys, here's a short block I was looking at back in 2014. This is from a TOP FUEL Funnycar. Now look at the parts these guys use in TOP FUEL Nitro motor:
"427 ZL1 Chevrolet Block, GM 3.76 Crank, Venolia rods, Arias Pistons,BME pins, Howards cam, RCD crank hub, Keith Black gear drive, Olsen oil pan, Titan oil pump.
Has run 5.96 and 242
$ 8500."
Emails from owner:
"We have made many runs with that motor the slowest it has ever ran on a full pass was 6.08 and that was on the very first run, it has run many 6.0's and a 5.96 and has gone 242 at the NHRA hot rod reunion at Bowling Green this year. The block has never been hurt, 6.5 to 1 compression ratio, we used the AJPE heads, the blower was a Littlefield mini retro 671 over driven at 14.9. AJPE Big block fuel heads"
So anyone wondering about OEM stuff might want to check their hats at the door. YES there is better, YES it might be better to use aftermarket solely for the cost to get the machining done. Remember back when Fastest Streetcar stuff first showed up. Guys Like Lukovich, Fulton, Giannino, Schafaroff ALL used OEM cranks for some of their BIG nitrous 548 builds as THE crank, offset ground and welded, but still a GM part.
So to the OP. If you're just doing a driver style or mild build, go get Ronnie's crank, it will be fine. IF you get the quote to machine a GM crank, might as well buy a Scat. It's the better usually of the 2. Either Scat or Eagle rate there cranks to 1500Hp. That's I wouldn't do myself, but that's what they "claim", so who knows.
FYI I have an 4.00" Eagle in my ZL-1 that's should be on the dyno next week!