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#1
03-16-2016, 08:22 PM
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re-production Ram Air IV intake
I was wondering if the raised plenum floor in the re-production intake be manifold be lowered to the proper depth of 3.5"? It looks like the raised portion is only a part and not the whole floor in the deep plenum. If it can be done how hard would it be. I have found a couple original 69 raIV intakes and just feel like I am commiting a sin to modify them. I want to do the while SD performance modification.
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#2
03-17-2016, 06:34 AM
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A production type machine shop or a full on race shop with a long enough end mill could lower the plenum floor for you, but the set up time would likely amount to more of the cost then the milling itself, can't say but they can give a estimate on cost I would guess!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#3
03-17-2016, 08:46 AM
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Curious....
And what would this accomplish ? Trying to increase the size of the plenum area? Use a carb spacer instead ? .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#4
03-17-2016, 03:21 PM
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Repop is at it's own different depth. The 71 HO intake is supposed to be at the same as the RAIV intake, 72 HO a little shorter per Rocky Rotella's old HPP article-but my 72 HO service replacement is not as shallow as that one. I still think you would have a tough time on the dyno seeing any difference between the minimal plenum depth of a 72 and RAIV/71 HO intake. Since they are almost the same runner size and plenum depth as the cast iron intakes I can't understand how a cast iron intake could really run any better either if both intakes have the same mods.
And as others said no way will it cover a tall port, factory a hair taller but neither will cover a 2.300 port without welding and milling.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs Last edited by Skip Fix; 03-17-2016 at 03:27 PM. |
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