low hood clearance dual four need a solution

[Michael C Henry]

I have an older 427 with inline dual four carbs. I have less than 1 1/2" above the carb to hood. I found that the car runs so much better with out the modified S&H air cleaners. I'm looking for some ideas. I live in Washington state and it does rain here and have been caught out in it. I have been considering another hood without the SC scoop that is more nostalgic than fictional. I'm not going for land speed record but?

[DanEC]

What intake are you using? I think the 427 low riser dual quad intake is about the only such Ford product that will fit under a smooth hood w/o a hood scoop. I have enough clearance to use 2” K&N filters in the S&H air cleaners under the hood of my ERA.

http://www.clubcobra.com/forums/albu...ictureid=12988

[Michael C Henry]

It is a Dove Tunnel Wedge inline dual four. heavily modified port matching.
The heads have been milled and thus the intake manifold. The engine sits almost level so the carb are higher in rear. The S&H air cleaners have been trimmed so they are 1 1/2" high and the perforated rings are trimmed so the out side is only 1 3/8" . The filter material was replaced, because the original filter material had been singed and probably let some bad stuff get in. I had always thought the little air cleaners were the big limiting factor. When The car would not start in spring. the plugs were all black and the new gasoline ,it started and it ran so much better without the air cleaners installed.

[DanEC]

OK - my mistake. I assumed you had a smooth hood - no scoop. I’ve seen some cars with exaggerated S/C hood scoops for high rise set ups and rear opening scoops but I don’t have any information on them.

[mr bruce]

I have a scoop like used on the Daytona coupes, no opening in the front so the rain don't get in, opening in the back for air intake, baffels and channels to channel water away from the engine/carb(s), distributor, can be made or figure it out yourself for your particular engine size/fitment

[strictlypersonl]

Any possibility of lowering the engine and using a shallower oil pan?

[Michael C Henry]

The original builder has the engine almost on the pavement. The engine is off center, and scatter shield is cut around the tube frame. I will ,more than likely, be having another hood built, with out the hood scoop. Now I'm researching the Low clearance carb hats that SPECTER or PROCHARGER makes. that connect by way of ducting to remote low restriction air filter elements.. Has anyone used the carb hat and fresh air option on a Cobra yet?

[Michael C Henry]

THE 427 Cobra was a left over hot rodders dream. They were done with the Daytona Coup cars, which was a down on the ground race car. They had discovered that the object was to cut the air from under the car and keep it in top of the car, Down on the ground , no pot holes or speed bumps. the 427 car was a bench racer "what if". Shelby was having bodies and engines delivered and had to make a sellable street car The hood Scoop didn't really work . The scoop was too far back and missed capturing any forced air. It was found that there was more air coming out of the scoop than went in. The side vents were supposed to take care of the over pressured ais under the hood, it doesn't work. At 150 MPH the cars gets lite in the front end.

[Michael C Henry]

Breaking up my text, I do not get out and drive at 150MPH but I did once. I always thought that the S&H air cleaners were the main limiting factor and my air cleaners are trimmed down even mor than normal. It is a street driven car with pot holes and speed bumps and all that. I have driven in hard rain many times, not by choice but to get back home. Not a trailer car but defiantly a garage car. I know it terrible but i still the tires that came on the car but one that had to be replaced because of side wall. I have driven the car without any air cleaners and it runs so much better. I know that driving with out air cleaners will cause engine damage. I bought the car in 1999. It is so much fun to drive but getting it out an ready is more of a choir than it used to be because of my replaced knee and hip an my fat belly. OH did I mention you can not lock it up? I had a couple kind of followed me back home" they were walking and I past them several times until I parked the car in the garage and had not closed the gate yet. they referred to it as discovering my" lair"

[Michael C Henry]

I was advised to get the air intake part of the problem settled first. I'm attracted to the fresh air idea with a plenum connected by ducting tubes to remote, less restrictive, air cleaner filter. The carb hat or plenum for dual four carbs seems to never been done before. There lots of single carb systems even plenums with dual intake tubes, but nothing has been found mentioning or showing two four bbl. carbs. Maybe not a Cobra replica but surely a hot rod some where?

[mr bruce]

Shelby SuperSnakes had what you're thinking, todays solution on ebay, just buy 2 of them-https://www.ebay.com/itm/265919031222?mkevt=1&mkcid=1&mkrid=711-53200-19255-0&campid=5338678874&toolid=20006%26customid%3Ds%25 3AGS%253Bgc%253Afcc96c1b0d5b1415710608bef37e9ae6%2 53Bpt%253A1%253Bchoc%253A1&customid=s%3AGS%3Bgc%3A fcc96c1b0d5b1415710608bef37e9ae6%3Bpt%3A1%3Bchoc%3 A2&msclkid=fcc96c1b0d5b1415710608bef37e9ae6

[mr bruce]

https://2.bp.blogspot.com/-bhKeYQJo0...Right+View.jpg

[Michael C Henry]

I have two four barrel carbs, inline , one in front of the other. just enough room for carbe float bows. The low profile carb hats are wide , so wide they will not fit side by side. The single carb hats, plenums, are higher and never shown on two four set up.

[mr bruce]

https://www.amazon.com/Holley-64280-...10921088&psc=1

[Michael C Henry]

Still no pictures of inline dual four bbl. carbs with carb hat , or plenum, but lots of pictures of single four bbl. carb with single carb hat ,or plenum , with dual inlet tube connections for the plenum or carb hat. I want a picture of a single plenum covering two inline four bbl. carbs or two plenums fitting side by side on inline dual four bbl. carbs mounted end to end. Preferably on an American V8 engine. I always thought a larger single four bbl. carb would have been easier to deal with...It wouldn't have been historically accurate but it is a replica with " historically warranted modifications".

[mr bruce]

64 Fairlaine Thunderbolts have what you need, ( picture won't load, google it , you'll see the pictures)

[mr bruce]

https://www.motortrend.com/features/...lity-drag-car/

[undy]

Originally Posted by undy

I little creativity goes a long way...

Attachment 31139

Attachment 31140

Here's mine...

[Michael C Henry]

I do not plan on changing any thing on the engine, consider it done. I want to change from the two restrictive trimmed down S&h air cleaners to a fresh air system that uses a carb hat or plenum, that is then ducted to a remote , less restrictive air filter. One plenum is desired but two single plenums could work, If they would fit two inline four bbl. carbs. No blower or turbo, just fresh air from a less restrictive air filter, probably located in the nose Infront of the radiator. Searching online is going no where . My responses have been single plenum with dual inlet tubes.
All the carb mounted air cleaner will require coming up through the hood and actually more than will fit within the present hood scoop. Then you have the distributer getting rain . I have been caught out in some pouring rain in the car. I can get wet but not the distributor. The distributor gets rained on, the car stopes, and I get even more wet. So the air system first then another hood.
does any one know of a single plenum that will fit two inline four bbl.'s, or will two single plenums both fit near to each other?

[Michael C Henry]

I have come to the reality that the reason it has not been done before is because you can't. Remember, I'm working with old technology Carbs, dual fours. I did some measuring my self and have come to the conclusion that a 4 or 5" hose would not let a hood close even a little, because of the pent roof valve covers. going forward to Infront of the radiator would be another problem as there is a lot going on in that area. So I'm back to an dual four air cleaner on top of the carbs. Might as well go big as it will need a new hood design.