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 1Likes
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1
Post By patrickt
08-24-2013, 01:03 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Need help with intake height
Brent and I are trying to determine if he needs to mill my nicely contoured intake for additional hood clearance. I'm running an FE, Victor intake, and hood scoop.
It would be great if some of the people on the forum could help us with data points. If you are using an FE, what intake do you have, what air cleaner, and how much clearance between the top of the air cleaner and the hood? Thanks!
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08-24-2013, 05:15 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by lippy
Brent and I are trying to determine if he needs to mill my nicely contoured intake for additional hood clearance. I'm running an FE, Victor intake, and hood scoop.
It would be great if some of the people on the forum could help us with data points. If you are using an FE, what intake do you have, what air cleaner, and how much clearance between the top of the air cleaner and the hood? Thanks!
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Blue Thunder intake, see this thread OK Chas, See If You Can Tell What's New... for details, pics and measurements on clearances when I switched from the Stellings air cleaner to the Xtreme (it's towards the end of that lengthy thread). |
08-24-2013, 05:38 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Patrick - So reading through that post it appears you're using a Holley 4160 750 CFM and a "drop" air cleaner mount. And with those, you have almost 3/4" clearance (minus the height of the top of the nut). Did you mill down your intake, or is there anything else there I should know? Thanks for the help.
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08-24-2013, 05:43 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Quote:
Originally Posted by lippy
Patrick - So reading through that post it appears you're using a Holley 4160 750 CFM and a "drop" air cleaner mount. And with those, you have almost 3/4" clearance (minus the height of the top of the nut). Did you mill down your intake, or is there anything else there I should know? Thanks for the help.
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No milling, and "yes" it's a Holley 4160 (3310-11) and the air cleaner base is flat, as per the pics. If you guys need any measurements, just ask and I'll walk out to the garage and get them for you. |
08-24-2013, 05:49 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Patrick - which Blue Thunder intake is it? INTAKE MANIFOLDS (F.E.)
Actually, it would be great if you could measure vertically from where the top flange of the valve cover meets the intake to either the top of your intake, or the highest point on the air cleaner. Really appreciate it. |
08-24-2013, 06:05 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
It is the 427 MR, not the comp or dominator version. I measure the distance from the flange to the carb air cleaner acorn nut to be about nine and three quarters inches. Here's a pic with one of my kids holding the tape measure for you (not sure how much that pic helps, but it gave us something to do).
Last edited by patrickt; 10-25-2016 at 11:15 AM..
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08-24-2013, 06:16 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,025
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Not Ranked
Here's a better one. With the tape measure resting on the top of the block plate, I measure the distance from the top of the block plate (Lakewood) to the top of air cleaner acorn nut to be just under 12 and three quarters inches -- maybe twelve and a half.
Last edited by patrickt; 10-25-2016 at 11:15 AM..
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08-24-2013, 07:04 PM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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That's really helpful. Thanks Patrick.
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08-24-2013, 07:27 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Nicely contoured. 
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08-25-2013, 03:35 AM
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CC Member
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Join Date: Dec 2010
Location: Tempe,AZ-High Point,NC,
AZ
Cobra Make, Engine: Kirkham #684, 482FE, Mike Mccluskey build
Posts: 2,520
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Not Ranked
Quote:
Originally Posted by blykins
Nicely contoured.
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Craftsmanship... 
__________________
PRIDEnJOY
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08-25-2013, 05:30 AM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,289
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Go with the Victor and stay away from the dual plane Blue Thunder with your engine setup (not saying you're even considering it). You'll leave horsepower on the table if you do.
Pat's measurements should be helpful though.
__________________
Too many toys?? never!
Last edited by undy; 08-25-2013 at 05:33 AM..
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08-25-2013, 09:21 AM
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CC Member
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Join Date: Feb 2002
Location: Dadeville,
AL
Cobra Make, Engine: Sold my EM.
Posts: 2,459
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Not Ranked
My comments are more generic than specific to your car, but maybe you'll find something helpful here. ... I had a carburetor clearance problem in one of my cars (non-Cobra) and discovered the following. - The most critical dimension was the distance from the top of the carburetor to the inside of the top of the air cleaner. A drop base air cleaner can allow a big filter, but if there isn't enough room for the air to make the turn into the top of the carburetor, it can affect performance.
- The air cleaner is merely the top of the engine/heads/intake manifold/carburetor/air cleaner assembly. Lowering any of these relative to the frame can increase clearance between the air cleaner and the hood.
- For example, you can lower the engine mounts, change to heads to lower the intake mounting level, mill the intake, or remove any unneeded material from the top of the carburetor.
- You can also gain clearance by raising the hood/body relative to the frame.
- Making all the changes to just one item (i.e., raising the body) may introduce new problems.
- Making multiple small changes may produce the best result, but it requires the most work/money.
- If clearance is ok except when the engine moves under power, you can modify the engine mounts to restrict engine movement.
__________________
Tommy
Cheetah tribute completed 2021 (TommysCars.Weebly.com)
Previously owned EM Cobra
"Never attribute to malice that which is adequately explained by stupidity." - Hanlon's Razor
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