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Old 10-22-2011, 07:52 PM
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ogles824
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MASTER JOURNEYMAN
 
Join Date: Aug 2007
Posts: 45
Default A tunnel ram for the street

We are debating putting a tunnel ram on a small block chevy in either a 355 or 383 configuration for our show K5 Blazer 4x4. It will be driven to shows and a cruise night every once in a while. I want to get maximum driveability out of this set up which historically has been hard to achieve because you are usually dealing with at least 900 cfm of total flow. I'd like to bring that down to about 600 to 700 cfm with out adding a single 4 barrel top, by putting the duel carb 4150 top on the intake and the adding 2 barrel adapter plates and mounting either 300 or 350 cfm demon or holley 2 barrel carbs on top. I know this will give me the air velocity for a stronger bottom end torque curve and It will be like running a single 4 barrel some what with the advantage of having the barrels mounted directly over the intake runners for better fuel charge flow. Of course it still won't behaive exactly like a single 4 barrel because instead
of running on 2 primary barrels and then adding the secondaries as the rpm's climb. It will be running on 4 barrels opening simultaniously instead so I don't figure it will be quiet as good as a single 4 barrel but a lot better than two 4 barrels and if we put velocity stacks on these 2 barrels we can pull off the look and still get great performance. What do you guys think?
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