641" C-head, 1170 hp
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Re: 641" C-head, 1170 hp
Up date...............
990 tq from 5500 - 5900 1170 hp @6600 Now on to gas
990 tq from 5500 - 5900 1170 hp @6600 Now on to gas

IDT-572- BBF CONTRIBUTOR

- Posts: 2644
Join date: 2008-12-02
Age: 51
Location: Shelbyville Tn.
Re: 641" C-head, 1170 hp
very impressive almost a 1000 of them ft lbs

KY JELLY- Posts: 1168
Join date: 2008-12-03
Re: 641" C-head, 1170 hp
F'n A !!!

dfree383- BBF CONTRIBUTOR

- Posts: 6749
Join date: 2009-07-09
Location: Everywhere
Re: 641" C-head, 1170 hp
Gas deal couldn't be tuned properly in the three pulls we had time for, so we cannot take anything from that other than:
Alky made 17.8" of crankcase vacuum; Gas made 21" vacuum. Little more stuff getting by the rings.
It looks like the alky was taking up some air flow based off where the air correction table numbers were headed in the MFI box. That would agree with
the down nozzle deal.
Overall very happy with the engine. It ran well, made good power and didn't go home in a box full of pieces.
Alky made 17.8" of crankcase vacuum; Gas made 21" vacuum. Little more stuff getting by the rings.
It looks like the alky was taking up some air flow based off where the air correction table numbers were headed in the MFI box. That would agree with
the down nozzle deal.
Overall very happy with the engine. It ran well, made good power and didn't go home in a box full of pieces.

David Willingham- BBF CONTRIBUTOR

- Posts: 351
Join date: 2008-12-02
Age: 39
Location: Blountsville, AL
Re: 641" C-head, 1170 hp
very impressive David , now get her in the truck
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bruno- Moderator

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