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Pampered-Z · 04-28-2007, 07:00 PM

They said they were dyno'ng customer's engines, they weren't motors they pulled themselfs or built.

I raced 413s and 440s and also worked with a few hemis. The 440 in my challenger ( worked 440! not stock ) dyno'd over 750HP and no way a showroom Hemi could run with it!

The hemi had allot more then 425HP in those things right off the show room, and you could get maybe 550-575HP out of them with proper tweeking, and a bit more with some special direct-connection parts.

I'd say the hemi was a ringer! Since it is a 1966 motor, at 820HP I'd bet that is a hemi from a SS/A car that's been fully massaged and still called stock.

04-28-2007, 07:00 PM	#18
Pampered-Z Sliderule / Moderator Join Date: Oct 2004 Location: Catawissa PA Posts: 2,294 iTrader: (1)	They said they were dyno'ng customer's engines, they weren't motors they pulled themselfs or built. I raced 413s and 440s and also worked with a few hemis. The 440 in my challenger ( worked 440! not stock ) dyno'd over 750HP and no way a showroom Hemi could run with it! The hemi had allot more then 425HP in those things right off the show room, and you could get maybe 550-575HP out of them with proper tweeking, and a bit more with some special direct-connection parts. I'd say the hemi was a ringer! Since it is a 1966 motor, at 820HP I'd bet that is a hemi from a SS/A car that's been fully massaged and still called stock. __________________ 93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada 1) Build it 2) Race it 3) Break it 4) Repeat!!! Last edited by Pampered-Z; 04-28-2007 at 07:11 PM.