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Old 11-25-2002, 01:20 PM
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Post Pontiac 400 Intake Manifold

Does anyone know of a company that makes a tunnel ram or high rise intake for a 1974 Pontiac 400? Or will a Chevy intake work? This is a street rod application.

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Old 11-25-2002, 01:49 PM
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Chevy will not work I am using an Edelbrock RPM with a 700 cfm but this in on a 468 but it came off a 400 that I blew the bottom end out of. I dont know what kind of car you are putting it in but my GTO the hood hits the top of the cleaner I end up going with a K&N set up with the top and a drop down lower to clear everything the K&N flow as much as without a cleaner and it makes HP. I hope this helps
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Old 11-25-2002, 01:53 PM
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It is going into a 23' T-bucket so clearance is not a problem.
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Old 11-25-2002, 02:16 PM
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Then go with the performer rpm and a K&N filter system dont know which heads you are using but the 6x are the best of the low compression heads there are better heads but the 6x are plentfull and very easy to work with. DOnt go 2 high on the rear gear as Pontiac's don't like a lot of rpm they make hp usally below 5000 and torque below 3000
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Old 11-25-2002, 03:21 PM
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definitely not the same as chevy. it would be the same as the 389/400/455s. not sure but seems like all the majors would make one. p.m. me when you find out any stock numbers and prices please. (ps.gentry means too low on the gears (higher numerically)
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Old 11-26-2002, 08:07 AM
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Tunnel Rams for Pontiacs are hard to come by, but they are out there. For streetability I would stay away from them, though. I believe WARRIOR or Wenzler makes a tunnel ram for close to $400.

Wenzler - http://www.nunzi-pontiac-expert.com/


Hope these help!
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Old 11-26-2002, 08:33 AM
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I could build a sheet metal intake for you. It would look cool but you would not be happy with the performance. If it is show only is the only way I would do this. The thing wouldn't start to run until around 4500 or so . A tri-power set up would look cool on it and can be made very streetable. If you want looks and preformance this is the route I think you would be most happy with. I say a complete set-up on e-bay the other day. Let us know what you think of the tri-power.
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Old 11-26-2002, 09:52 AM
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I think a tri-power setup would be nice. I plan on driving this car as much as weather and time permit, so performance are just as important to me as looks. What are the best carbs to use for a tri-power setup? Is it hard to get all three carbs in-sync?
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Old 11-26-2002, 10:02 AM
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I would try and find the entire thing complete and not part it together that way you know thecarbs will work for you. I haven't played with a tri-power so really unsure of what carbs most use. Roch. 2g's I think I've heard some of the guys say but best to go with what ever the guy that run them suggest. As for getting carbs in sync. good linkage is very important. It does take abit longer to get everything in line but once you do very little adjustment will be needed. Good luck to you, Ryan
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Old 11-26-2002, 11:42 AM
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The wenzler tunnel ram boasts that they are still very streetable......with little or no loss of low end torque. I may change to one on my 455.
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