454 Big Block MPG

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jake wells

jake wells

Can i be me?
Joined
Jul 31, 2010
Posts
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Location
Brownsville Kentucky
First Name
jake
Truck Year
1975
Truck Model
custom deluxe 10
Engine Size
350
Just remember that a bouncing needle is bad it could mean burnt valves or vacuum leaks present in the system
 
Shorty81

Shorty81

Baby Boomer
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Location
North West ohio
First Name
Darren
Truck Year
86
Truck Model
K20
Engine Size
496
Wumbo said:
I get 10-12mpg with mine.

3.73 gears, stock tire size, SM465

Engine has 049 heads, comp 11-235-3 cam, cast iron oval intake, original quadrajet.
Click to expand...
Wow, we are close!! I get 11-12 with 3.73, SM465, 31" tires, 781 heads.
 
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