460 Ford Forum banner

1 - 10 of 10 Posts

·
Registered
Joined
·
32 Posts
Discussion Starter #1
i finish to build my 557 with scat crank 4,5 with 6,7 h beam rod
probe flat top piston .scj head 2,25 int 1,76 exh
motorsport dominator intake holley 8896
cam herbert 276 284 at.050
.747 lift
106

best hp 787 at 6300 rpm
tq 776 at 4400 rpm
 

·
Registered
Joined
·
66 Posts
557 scat 4.5 with 6.8 rod 11/1 cr with p-51 vic jr intake 1050 4500 holly 276-280 @50 with 789-790 lift made 775 @ 6200 741 @ 4200 on pump gas 93 octane jumped 15 hp when i got rid of the 112-93 mix to straight 93.

LOL way cheaper to run on the street.
 

·
Registered
Joined
·
204 Posts
Why would it make more power with a lower octane fuel?

Was the carb and tune adjusted for the higher octane brew?
 
1 - 10 of 10 Posts
Top