Anyone put an aluminum intake manifold on a 403

[advanced concept energy solutions]

In 1991 I put a an Edlebrock intake manifold and torquer cam, headers and 3" exhaust and Holly FI on my 78 Royale with 403. The difference was amazing. No more vapor lock, great throttle response. Had to build a 2-3" dog house. Installed a low profile scoop and remote 4" filter. The following year they offer O2 feedback that I promptly installed. Had original 3:08 gears. Got as good a 11 mpg on flat runs.

Jon Darcy ACES
North Jersey 76 stretch, flares, 4 bag, Alcoa's, bunkhouse,MAC Dash,Manny Trans, FiTech FI,Honda 6010

 

[jim kanomata1]

Miguel Mendez of MGM GMC will tell you that he he get just as good milage
with our 3.70 on his and his customers 403 engines and also improves
performance.
Also Jim Hupy gets comparable milage and performance.
One need to look at the torque curve to see why the lower can give the
advantage and the increase in aerodynamic drag .

On Tue, Jan 3, 2017 at 10:02 AM, Advanced Concept Energy Solutions <

> In 1991 I put a an Edlebrock intake manifold and torquer cam, headers and
> 3" exhaust and Holly FI on my 78 Royale with 403. The difference was
> amazing. No more vapor lock, great throttle response. Had to build a 2-3"
> dog house. Installed a low profile scoop and remote 4" filter. The
> following year they offer O2 feedback that I promptly installed. Had
> original 3:08 gears. Got as good a 11 mpg on flat runs.
>
> Jon Darcy ACES
> North Jersey 76 stretch, flares, 4 bag, Alcoa's, bunkhouse,MAC Dash,Manny
> Trans, FiTech FI,Honda 6010
>
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk
http://www.appliedgmc.com
1-800-752-7502