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Old 07-20-2010, 06:13 PM
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406 with tunnel ram or single carb with intake

Fellows, forgive me if you have covered it. If so, could not find it. I'm having a 406 built for a street motor. I know a guy who has a weiand tunnel ram with 2 450 holleys that are brand new. Would I make more power with that setup over say a 750 with a single plane intake. It will be a hydralic cam. It will be build for pumped gas, 9.5 to 10 to 0 compression. It would look cool to. Thanks Lee

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Old 07-20-2010, 06:23 PM
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Would you have to pay for it before trying it...or would he let you "sample" it? I'd sample it if I had the opportunity.
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Old 07-20-2010, 06:36 PM
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The guy who has the tunnel ram built an engine before for me. This 406 would be the second. He knows how to tune the the ram. But wouldn't you have to build the engine somwhat based on the intake and carb? He would let me try it first.
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Old 07-20-2010, 06:40 PM
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Try it. If it doesn't work out, you could always go to a single carb/intake. At least you'll know how it would do...instead of wondering about the possibilities, later.
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Old 07-20-2010, 06:44 PM
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Its in a 84 chevy truck. 3;73 limited slip, 2300 350 turbo. I have a comp x274 cam from my first 355, but thought about going bigger.
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Old 07-20-2010, 06:47 PM
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I'm trying to use as much as i can from my 355. I have vortec heads with a performer rpm intake.
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Old 07-20-2010, 06:53 PM
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Thanks for the advice. I thought about getting my vortec heads ported along with a ported victor single plane intake since i already had the heads. again, thanks for the advice. Lee
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Old 07-21-2010, 10:35 AM
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One 750 Holley on a Tunnel Ram. I would not bother with the setup. Fuel distribution will be poor at part throttle. Low end response is not as good. Putting 750DP in a
heavy truck. Hope you do not bog when hit the pedal. 750VS is better choice.
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Old 10-12-2010, 02:12 PM
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hey i have done alot of reading on the tunnel rams recently and like was said before the 450 carbs he has are one of the recommended carbs for the tunnel ram although without a good set of heads and a sick cam you will not see the benifits of the tunnel ram i think if i had to setup yout truck now you will definatly need taller gears 4.10 at least that should keep you on the expressway for short periods without running it out
next definatly splurge on a set of heads that flow some serious cfm and match them up with a set of headers and nonrestrictive exhaust and a 3000 stall converter keep you from scaring the children at every stop light thats still a decent setup but you will be able to drive it to work every day and you can get away with using the 450 carbs but i would have to recommend the 660 center squirter carbs that are also made for t ram intakes and you will be right in the grey area of streetability but i dont think you will get punked at a stoplight lol

i am currently running a 355 with 11.5-1 comp a big lift solid cam aluminum heads headers freeflowing exhaust a tunnel ram and two 770 cfm carbeurators and i will be looking for about 550 hp but serious power well past 5000 rpm which is why you need some tall *** gears
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