440 Carb Pad Height

[bajajoaquin]

So I'm leaning towards the Edelbrock Performer carb, and it's making me think about the intake manifold. I'm thinking about getting a Performer manifold as well. One concern is the height of the carb and manifold combination. I read some (unconfirmed) reports of hood clearance issues on later Imperials.

Edelbrock lists the carb pad height of the Performer as 3.80" front/4.80" rear. Does anyone know the height of the stock 440 manifold?

 

[70bigblockdodge]

I'm not sure of later Imperials but my friend had a 68 with performer and lid was pressed into the pad with a very short air cleaner, remember the 67-68 Imps where a different animal than anything else.


Difference in the manifolds are 1.25 inch taller than stock if I remember right

 

[bajajoaquin]

I don't quite understand your comment. Do you mean that he had to have a short air cleaner in order to clear the hood? I have a '67 Imperial, by the way. My comment about later Imperials was confusing, but intended to say that I have only heard about clearance issues on later (fuselage) Imperials. I've never heard anything one way or the other on '67s.

 

[70bigblockdodge]

Yes his was a 68 shares with 67, air filter was short I should have said could not use stock air cleaner with edelbrock performer intake, will hit the hood.

 

[commando1]

Edelbrock lists the carb pad height of the Performer as 3.80" front/4.80" rear. Does anyone know the height of the stock 440 manifold?

That's a meaningless dimension. From where to where??
Two different manifolds will have two different base lines.
Like he said above, all you can compare is the DIFFERENCE on OAL installed height.

 

[bajajoaquin]

From the Edelbrock site:

 

[70bigblockdodge]

Best bet is to keep stock intake, get a 800 cfm edelbrock avs thunder series (has sprung air door on secondaries like a thermoquad) you can block off heat crossover if your going to take intake off (they sell a special valley pan for this) you should have no problem in San Diego ( I never did) this will cool your intake enough to make hot starts easier

 

[70bigblockdodge]

The stock holley that was on your car is only about 600 cfm and not a very good piece except in original parts box at sell time. Gain from the intake will be minimal and it just doesn't fit well under the hood sorry

 

[440Sled]

Get a larger carb, dual exhaust and electronic igintion and call it good.

 

[commando1]

From the Edelbrock site:

View attachment 22600

STILL hard to say because Mopar BB intakes are "air gap" manifolds but trying my best to go by that pic, I get 2.0" and 2.25" fore and aft...

 

[bajajoaquin]

Thanks. That's better than any other measurement I had gotten, which was none!

I'll grab some Plasticine and see how much clearance I have under the hood. Some of the other comments here make me think that I'll be sticking with a stock manifold.

 

[bajajoaquin]

Since the important question is how much room there is under the hood, this photo of the impression left by the air cleaner on the pad kinda answers the question: not much!



I guess I stay with the stock manifold.