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Edelbrock RPM intake and Ram Air
#11
tony-muscle;250989 Wrote:For Ram air you can also trim the top lip of the plenum where the gasket sits. This with a modified half gasket should be enough to gain 1+ inches.
Now, who knows how much taller is the air gap compared to a dual plenum?

1971 M-code Mach 1

The Edelbrock Performer (approx same as stock) has a carb base height of 3.90".

The Edelbrock Air Gap has a carb base height of 5.02".

The Blue Thunder has a carb base height of 4.37" and 0.125” more set back than stock. You could mill the carb base 0.275” and be almost equivalent to stock.

-john
(jbojo)
351C 4V cc heads, 10.5 : 1 CR, 290 Herbert cam, Flat top forged pistons, forged connecting rods, Atomic efi,
C6 with Gear Vendor overdrive, 3.89 Tru Trac, Hooker Super Comp with 2 1/2" Pypes Exhaust.        

Some Mod pictures can be seen at:

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#12
jbojo;250996 Wrote:
tony-muscle;250989 Wrote:For Ram air you can also trim the top lip of the plenum where the gasket sits. This with a modified half gasket should be enough to gain 1+ inches.
Now, who knows how much taller is the air gap compared to a dual plenum?

1971 M-code Mach 1

The Edelbrock Performer (approx same as stock) has a carb base height of 3.90".

The Edelbrock Air Gap has a carb base height of 5.02".

The Blue Thunder has a carb base height of 4.37" and 0.125” more set back than stock. You could mill the carb base 0.275” and be almost equivalent to stock.

I'm starting to think based off the dimensions I could get away with buying the blue thunder intake and cutting down the foam piece. I'll just have to save up a lil more cheddar for the blue thunder...
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#13
In my 71 i measured to have a gap of about one inch without the plenum gasket.... so maybe there is enough room but a more careful measurement should be made. Also, i think different year cars may have different engine heights plus different mounts.

1971 M-code Mach 1

[Image: 20160929_171923_edit2_small.jpg]

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
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