Which intake to use?
Thread Starter
Joined: Nov 2005
Posts: 2,456
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From: Louisville KY
Which intake to use?
I think i've heard to use the S4 NA intake instead of the S5 NA intake on a full bridgeport since it's better for the top end power, is this true? It's for my friends car.
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
The best bet is to ignore both stock intakes and build your own short runner intake. This is not always possible. 
Next best choice is a TII intake if you can do a good job port matching. The TII intake doesn't use any of the tricks the NA intakes do and is a simple plenum/runner design.
After that, the S4 intake. Gut the dynamic chamber so it become an empty plenum.
Finally, the S5 manifold. Never a good choice on a heavily ported engine.
Next best choice is a TII intake if you can do a good job port matching. The TII intake doesn't use any of the tricks the NA intakes do and is a simple plenum/runner design.
After that, the S4 intake. Gut the dynamic chamber so it become an empty plenum.
Finally, the S5 manifold. Never a good choice on a heavily ported engine.