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-   -   Need help with intake height (http://www.clubcobra.com/forums/all-cobra-talk/121920-need-help-intake-height.html)

lippy 08-24-2013 01:03 PM
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!

patrickt 08-24-2013 05:15 PM
Quote:
Originally Posted by lippy (Post 1259167)
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!
Blue Thunder intake, see this thread http://www.clubcobra.com/forums/all-...whats-new.html 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).

lippy 08-24-2013 05:38 PM
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.

patrickt 08-24-2013 05:43 PM
Quote:
Originally Posted by lippy (Post 1259195)
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.
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.

lippy 08-24-2013 05:49 PM
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.

patrickt 08-24-2013 06:05 PM
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).

http://www.clubcobra.com/photopost/d...measure001.jpg

patrickt 08-24-2013 06:16 PM
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.

http://www.clubcobra.com/photopost/d...measure001.jpg

lippy 08-24-2013 07:04 PM
That's really helpful. Thanks Patrick.

blykins 08-24-2013 07:27 PM
Nicely contoured. :)

http://i170.photobucket.com/albums/u...ps95208934.jpg

fordracing65 08-25-2013 03:35 AM
Quote:
Originally Posted by blykins (Post 1259211)
Craftsmanship...:cool:

undy 08-25-2013 05:30 AM
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.

Tommy 08-25-2013 09:21 AM
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.
  1. 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.
  2. 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.
  3. 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.
  4. You can also gain clearance by raising the hood/body relative to the frame.
  5. Making all the changes to just one item (i.e., raising the body) may introduce new problems.
  6. Making multiple small changes may produce the best result, but it requires the most work/money.
  7. If clearance is ok except when the engine moves under power, you can modify the engine mounts to restrict engine movement.


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