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#1
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2nd gen Trans Am shaker clearance
I’m looking for air filter ideas for a 2nd gen TA with high ports, a Victor, and a dominator. My 70 TA has a fiberglass hood with the shaker molded in, but it looks damn near impossible to get any type of air filter assembly on it. I’m thinking I either need to go with a new hood and taller shaker or have some crazy air box fabricated for it.
I can’t be the first one trying to tackle this issue It’s hard to get a good picture but I’m attaching a couple
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ Last edited by R 70 Judge; 10-15-2021 at 09:13 PM. |
#2
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The Moroso 65803 dominator cap nearly fits but just catches on the front slope of the shaker scoop. I figured this would be a good starting point to figure out what I can do.
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#3
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Found this by glasstek but it’s taller than I’d like. Has anyone tried this scoop?
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#4
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Quote:
Message Don Keefe and he can probably get you a back issue and put you in contact with the car owner (Chris Carrato). FWIW, Eric
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"Everybody has a plan until they get punched in the mouth" noted philosopher Mike Tyson Life begins at the end of your comfort zone. “The mind, once stretched by a new idea, never returns to its original dimensions.” |
#5
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Kelvin Poe had one something like that:
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#6
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High ports add and extra 3/4" height vs E head/iron head. Going to be a tight fit with the Victor. A KRE Northwind intake drops about 1" off a Victor.
Ken had his Dude Scoop the I think Dave N at F Body Pro Touring is replicating but not sure it will get you enough clearance either.
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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 |
#7
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Thanks for the input guys!
I really like my current hood set-up so I think I’m going to give the Northwind a try. It doesn’t look like it will give up too much over the Victor. Who knows it may even pick up a little or stay the same if I have some mild port work done. According to this it’s a 1.203” difference (Victor 10.825” vs Northwind 9.622) which is significant. It will also give me more options for a spacer or possibly a nitrous plate. https://www.tinindianperformance.com...-measurements/
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ Last edited by R 70 Judge; 10-16-2021 at 03:23 PM. |
#8
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If anyone has an extra 4500 Northwind they want to part with let me know.
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#9
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Quote:
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#10
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I have a shaker hood scoop molded onto my fiberglass hood. From a distance going down the road it looks somewhat factory:
https://www.motortrend.com/features/...b-e1f7e9e5685c My air cleaner assembly goes up inside the hood scoop. With a HP950 carb I used a Victor intake with a K&N 9-inch diameter filter that was 2.875" tall and with it the 9-inch diameter X-stream filter top. In addition I had the Victor intake carb flange milled down 0.650" for extra clearance. On my 505 dyno testing indicated the milled intake gave up about 8-10 HP at peak power rpm. With 660 HP I was not worried about the loss ! For track use, just remove the air cleaner. Butler has done the same on a 535 combo on a Victor intake for use on a functioning shaker assembly, it gave up about 15 hp on the dyno. This all said, I run Edelbrock cylinder heads. Not the taller HP heads. (Since then I have converted to direct port fuel injection. With the throttle body in place of the carb the air cleaner assy still goes up inside the scoop. This will be of interest: Northwind Intake manifold Dyno Testing. http://www.sdperformance.com/newsStory.php?newsID=53
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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 |
#11
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Here are my measurements from the fronat and rear valley pan seal of the block. on the first dimensions. Second set to a flat valley pan right at the carb pad.
Northwind 7 5/16 / 7 3/8 Carb pad 7 3/16 / 7 3/16 Victor 8 9/16" / 8 9/16" Carb pad 8 1/2 / 8 1/2" So about 1 1/4" I got a Northwind 4500 form Butler a few months ago but had to wait a month or two for it to get to them. My IA/Camaro with a 3" cowl with E heads and a Victor is close with a 4150 but I can get a drop base air filter on it. Not sure it would with a Dominator and for sure with High Ports and Victor.
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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 |
#12
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Skip, what is the port height on the 'As Cast' Northwind intake ?
.
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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 |
#13
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Quote:
Quote:
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#14
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Steve 2.18x1.18 basically a FelPro gasket size. The top of the port looks touched by a CNC to get it even . Port dividers in the plenum are pretty sharp from the mill making the cloverleaf as well as sharp into the top of the runners vs a Victor Dominator.
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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; 10-17-2021 at 09:00 PM. |
The Following User Says Thank You to Skip Fix For This Useful Post: | ||
#15
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Here are plenum pictures. One good thing is the throttle cable bosses are taller than the Victor so should be a straighter line without having to add spacers like I did on my Victor
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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 |
#16
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Sent pm
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1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds |
#17
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Big thank you to JC for offering a ported Northwind. Great looking intake. Unfortunately it was just too big for my stock size heads.
I saw this at a local Pontiac car show today. Nice looking 1973 TA. It is hard to see but I think it is a northwind. It had an EFI throttlebody. Everything looked to fit great with the shaker.
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
#18
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Not sure this is of any use to you, but it help me when trying to get a bit more room in the shaker. The filters taper toward the top. (Conical shape) https://www.airaid.com/concept
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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick. Best so far 10.12@133 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
#19
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I have a 2nd gen Z28 (BBC) with a Dominator & a Victor, and a N20 plate (no shaker). I recently changed the hood (so I could actually see around the monstrosity Harwood aero scoop) to a 4" cowl, and used a Moroso drop base (which has the largest drop available) and found that Butler sells this tapered filter assembly specifically for the shakers. You can also buy the element from them separately instead of the whole $250 assembly. Might get you going in the right direction using those parts with a little custom fab work.
https://butlerperformance.com/i-2718...tegory:1234827
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1966 GTO (Red) WARPATH 455CI TriPower 4-Speed 1965 GTO (Black) TRIPOWR 464CI TriPower 4-Speed 1965 GTO (Blue) 3X24SPD 464CI TriPower 4-Speed |
#20
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Just a quick update. I ordered a 4500 Northwind from KRE last month. I heard from Jeff earlier this week that they are expecting them to arrive in the next week or two. If you need one it may be a good time to order.
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James 1970 Trans Am Spotts Built 484" IA2, Highports, EFI Northwind Terminator X sequential EFI fabrication and suspension by https://www.funkhouserracecars.com/ |
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