Quote Originally Posted by REGs
Well.......... if it were me...... I'd go the camaro engine - if its never been apart. Your starting with a std. bore so YOU can go from there. As for the other .060 doesn't leave you much more material to overbore (although I've seen race engines much bigger) but it's all what your design for the engine is.

Best of luck.

Regs

ps: I ran a 2 bolt 60 over 54 with prostock epd heads & intake on the street & strip in the 80's....... I buzzed that thing to 7500 regularly & never had an issue. Car & engine sold & was used for many yrs. afterwards.
well here is the deal if you block rock the 454 short fill and put steel caps on it will take what ever you can throw at it .the deal is with hi rpm and hp the caps will move but this is the hi side of 700+hp and the rails of the block will flex i have many many two bolts out there that run past 7000 rpm and make 700 hp EZ but there is more then just block work on the bore out can go 070 and 100 over and 125 bore but getting one out that far i would sonic check the 060 and the 070 is not to big of a deal the big block has the best bottom end of any block out there and in no way should be compared to a sbc. i have fixed many bbc when they have kick out rods or lost pistons a stock sbc you would be scraping the block. i have many 489 and 496 and a513 that used stock blocks the 070 bore 4.375 stroke =513cid and runs like a bear . i may just put a 4.500 crank in one and bore it out to 100 short fill it and the steel middle main caps to make a 535 CID with a stock 9.800 block