New GM engine?
Large engine Interesting?
Forum Discussion
Not really from GM (built with aftermarket performance parts, including the block, which are loosely modeled on the Chevy big block).
Not particularly new, as 700-800 HP normally-aspirated "street" builds of Ford, Mopar and GM big blocks have been around for almost 40 years. Can-Am racers were getting that kind of power from 7-liter builds, running 12 and 24 hour endurance races. Sprint Cup engines reached 850 HP from just 5.7 liters before Nascar started working on power reductions.
I'm seeing 582's sold assembled at $9000 to $16,000 at this level of tune.
A 800 HP probably would not be so useful as a motorhome powerplant, but a 400 HP tune of a 572-582 big block could be interesting, as it would be about the same level of tune as 340-350 HP from the 8.1 Vortec.
GM is still selling the 572 crate motor, rated for 750+ at 6200 rpm.
Not particularly new, as 700-800 HP normally-aspirated "street" builds of Ford, Mopar and GM big blocks have been around for almost 40 years. Can-Am racers were getting that kind of power from 7-liter builds, running 12 and 24 hour endurance races. Sprint Cup engines reached 850 HP from just 5.7 liters before Nascar started working on power reductions.
I'm seeing 582's sold assembled at $9000 to $16,000 at this level of tune.
A 800 HP probably would not be so useful as a motorhome powerplant, but a 400 HP tune of a 572-582 big block could be interesting, as it would be about the same level of tune as 340-350 HP from the 8.1 Vortec.
GM is still selling the 572 crate motor, rated for 750+ at 6200 rpm.
