There have been a lot of good discussions on engine internals and the HP levels they can support.

I'd like an idea of the HP that the combination I have in mind will make before deciding how much I am going to spend on the rotating assembly.

My engine will be a 4-bolt 383 LT1, heads that flow 270/200 at .6, comp cams 224/236 on a 115LSA, roller rockers, stock intake, stock throttle body, long tubes, no cats flowing through a borla. CR will be 9.0:1. I plan on starting at 10# with my ATI procharger (twin intercoolers) maybe increasing to 12# at a later date. I'll have a racetronix single in tank fuel pump kit, #42lb injectors and methanol injection to supplement the injectors a bit (and help with the crappy 91 octane fuel). I already have the 42#ers and don't want to go to low impedance injectors at this point. So, I'll be limited to the HP that this fuel system can support. The car is a daily driver and will mainly run non-oxygenated 91 octane fuel.

My question is, at 10lbs of boost, roughly how much will this combo make? If its 450rwhp, then I'll probably save some money and go with an eagle rotating assembly. If it's close to the 550rwhp mark, I'll go with Callies or a higher quality used short block.

Thanks,
Brent M.

 

The setup you describe will be more in the 550hp range. A Scat crank would the job for you, but if you want to spring for Callies they are awfully nice - I use 'em. They're American made, to boot. Eagle cranks have a lesser reputation than Scat's.

Rich Krause

 

Eagles have lesser reputation because of exploited slave labor in China... not because of quality.

 

I just got my Eagle crank, and it looks plenty strong enough. I always thought the Scat cranks were the cheaper alternative to Eagle's stuff??