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Ram Air
#1
With OEM ram air on my 71 Mustang..do I have fitment issues with either the Blue thunder intake or the Air Gap

Thanks
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#2
This question has been asked numerous times with many different answers. For me it fit ok on my 73 but there was a motor mount change that year and that could make the difference.

I saw this on this site:

http://www.network54.com/Forum/119419/th...ke+fitment


shaker
May 13 2012, 4:13 PM

As far as I know, the Blue thunder manifold will work with the 1970 shaker and the 1971 - 1973 ram air assemblies; unmodified.

The Shelby/Blue Thunder carburetor pad is about 5/8" higher than the production manifold's carburetor pad. The thick rubber seal that seals the 1970 shaker assembly or 1971 - 1973 ram air assembly to the engine compartment hood (bonnet) is capable of compressing to make up the difference in height.

The carburetor is also more centered on the Shelby/Blue Thunder manifold, whereas the carburetor is off-set to the rear of the motor on the production manifold. But again, it appears Ford engineers allowed for enough fore-aft adjustment to make up that difference too.

I've come to the conclusion over the years that the Shelby/Blue Thunder manifold's ability to work with the shaker & ram air assemblies was intentional, since Ford engineers designed both the manifold and the shaker & ram air assemblies.


So the decision is a flip of the coin in my opinion, you won't know till you try.

-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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#3
The Blue thunder maybe, The RPM Air Gap NO. I just bought an air gap, and its 2" taller than my performer. In my car even the performer is a tight fit. My car is a 1972 with the run of the mill Cleveland motor mounts. I was going to buy he BT until I read somewhere that the plenum height is taller than stock, and the price. ($455+$150 for runner equalization?) Might as well buy a Boss intake off Ebay for this kind of money!!!
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