Our baseline horsepower and torque ratings are based on testing with the
production-style, normally aspirated injection system. There’s no telling
how much power you can realize with a carefully tuned turbo or supercharger
See page 286 for information on our reference guide P/N 88959384 for installing
This statement is directly out of the GMPP 10 catalog. I think they test them with factory manifolds and stock accsy. such as the water pump and alt. I doubt they have power steering pump or ac compressor on them. Its a bad little motor. I want the 454 crate for my HD truck.
99 Hugger Orange 1LE Camaro A4
New Combo L-92 Block and Heads 416ci
Built by The Head Shop. The heads are fully ported, L76 intake, custom FTI cam and valve train. Tuned by Flaco.Dyno results 508 hp at 5800.
Thanks to Jerry, Shawn,Ed,Flaco,and Richard.
04 2500HD 4x4 The parts Chaser
89 5.0 coupe The 10 year project.