Raptor twin turbo

[A26B]

Several years ago, I made up an Excel calculator for turbocharged HP calculations, with variables input for; (1)engine normally aspirated RWHP, (2)Atmospheric Pressure & (3) Boost pressure. CHP is calculated by RWHP/(1-driveline loss factor).

For a 374 in3, 9.0 compression, stock cams & top end porting, RWHP was 398Hp.

At 9.0 psig boost, 642 RWHP, 755CHP

We will see how close this is. difference in displacement would be about 12 Hp less at the crank.

Thant's my guesstimate.

[rbidwell]

Thanks Jerry. Being the old man that I am that will be plenty of get and go for me. My main concern is drivability and dependabilty.

[A26B]

I had a 1995 LT1 with the single, rear mount turbo. Compression was about 9:1, 0.030 over bore, still running stock cams, no porting, no headers, just manifolds. Auto trans with a 2500 stall converter. It was a joy to drive. A grocery getter in disguise. Got 23 mpg between Coreys shop & my home in Oklahoma. Dyno 600+ RWHP. Several of the guys at Corey's took it out & flogged it. All came back with a smile & talk about "being surprised, considering how docile it was until the pedal hit the metal.

You're gonna love it.