Quote:
Originally Posted by chrisx66
A BBC will make more power all day long, compare a 460 to a 454.
BBF only two bolt mains and cast crank, weak oiling system, weak cylinder head flow especially the exhaust port, non adjustable aluminum fulcrum valve train. Except the cobra jet and 10 head bolts per side.
BBC 2 and 4 bolt mains, better cylinder heads, forged and cast cranks, 16 head bolts per side, better oiling system, adjustable valve train.
I used to race the PSCA until i moved from California to Texas, over 50% of the Mustangs are Chevy powered.
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BBF is available in 4 bolt mains as well. The stock 2 bolt set up (using stock bolts,not even studs) has been proven to handle well over 800hp (some pushing over 1500hp) without a breaking a sweat. But you can also 4 bolt the stock 2 bolt block if you want. Same with the cranks (theyre nodular iron BTW), theyre larger and can handle immense power (850hp is not a problem with some well over 1000hp) and a STOCK CRANK can be offset ground to produce over 500cubic inches....thats with a stock crank. Look it up.
Also, the BBC has 16 head bolts because it NEEDS them, theyre wimpy 7/16 in size and cant be torqued to anything respectable (and watch out for the rusted bolts that go into your water jackets!!LOL) 75lbs?!?!LOL The BBF's are torqued closer to 150. Did you even read the link i posted that actually compares them???Most BBC guys have to scramble and look for their "tall deck" blocks to compete, or use aftermarket blocks and use no actual GM parts!
The 460 was never really used in a performance applications (which is why the stock induction system wasnt developed from the factory) but was engineered to industrial specs and can withstand almost anything you can throw at it. Youve seen the new Jon Kaase hemi heads??People have achieved an easy 900+hp out of the box with those!