Big block Dart hood clearance question

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69GT

69GT

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I have a question for the big block 67/69 Dart owners here. I'm building a 400 stroker for my 69 Dart. A while back I bought a new Performer RPM intake manifold for it. It's getting close to the time to install it on the motor before I put the motor in the car and it just came to mind to ask here if there might be a hood clearance problem once the carb and air cleaner are on it. The hood is a 68/69 style bulge hood. Does anyone here know if the manifold height will cause an issue with hood clearance?
 
I ran a stock 440+6 in my 69 Barracuda with the engine raised 1/4 inch from stock with no issues. For short periods of time, I had a four barrel with a Performer intake with no issues either.

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jos51700 said:
Why was the engine raised from stock?
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My Duster, with a 400 on elephant ears, has the engine up high enough that I can stick fingers between the oil pump and the engine mount, which also explains why it was probably raised up - to avoid more work trimming the mount so the engine will sit level like it should. They got a little carried away IMO
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I ran a dual four Offenhauser intake for a decade, and had a DP4B 383 Edelbrock on it for years also, never any hood clearance...
 
383 eddy DP4B(similar dimensions to the performer)and a drop base air cleaner. I don’t think I needed the drop base, but now I can run a taller filter.

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Performer RPM is quite a bit taller than a performer, but on a B-block it will be less problem than on an RB.
Might have to run a drop base aircleaner.
 
Yes, I already planned on a drop base air cleaner. I have been planning on using the RPM manifold initially but my end goal is to put an STR-15 crossram on it. Hopefully, that will clear the hood as well but I don't have any smaller drop base air cleaners for it. Not even sure if they make a smaller (9") drop base.
 
I run a Performer RPM on my low deck in a 69 B'cuda with a drop base air cleaner assembly...fits just fine

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Anyone use the mopar performance air cleaner with drop base on a 440 with the edelbrock performer intake?
 
Kind of odd, but right now I’m working on a ‘67 Barracuda Formula S factory 383 and original k-frame, motor mounts. Even with a Torker which is an inch shorter than the Performer RPM and a drop base, the air cleaner barely touched the hood. I plan to use this RPM on there now and look how high it sits. That’ll make contact with the hood. Is there an even more of a drop base?

EDIT: I will need a shorter air filter, I will need to find a part number. The ones that are 2 inches tall?

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mopardude318 said:
Kind of odd, but right now I’m working on a ‘67 Barracuda Formula S factory 383 and original k-frame, motor mounts. Even with a Torker which is an inch shorter than the Performer RPM and a drop base, the air cleaner barely touched the hood. I plan to use this RPM on there now and look how high it sits. That’ll make contact with the hood. Is there an even more of a drop base?

EDIT: I will need a shorter air filter, I will need to find a part number. The ones that are 2 inches tall?

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Going to a 2" element will buy you some room.
 
mopardude318 said:
Kind of odd, but right now I’m working on a ‘67 Barracuda Formula S factory 383 and original k-frame, motor mounts. Even with a Torker which is an inch shorter than the Performer RPM and a drop base, the air cleaner barely touched the hood. I plan to use this RPM on there now and look how high it sits. That’ll make contact with the hood. Is there an even more of a drop base?

EDIT: I will need a shorter air filter, I will need to find a part number. The ones that are 2 inches tall?

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I wouldn't plan on more drop than the one in the pics.
I've got an absolutely beautiful huge-drop-base spun aluminum aircleaner, with a reverse velocity stack lid. (directs the flow down into the carb around a dropped center lid). Really nicely done piece.


It's been sitting on the shelf for thirty years, thru multiple cars that could have used it. Why? Because the drop is SO EXTREME, that no throttle linkage works, no kick down has room, can't even hook up fuel lines to a holley. So, it's garage art.


I could use a spacer to get it higher off the carb.....but then the point of the drop becomes mute.
 
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Imo, the old original x-shaped torker was a pretty good street manifold. It might gain a little here, lose a little there, compared to a RPM, but I doubt it's significant enough to be noticed on a street car. Quite a bit easier to fit under a flat hood, too.
 
33IMP said:
I wouldn't plan on more drop than the one in the pics.
I've got an absolutely beautiful huge-drop-base spun aluminum aircleaner, with a reverse velocity stack lid. (directs the flow down into the carb around a dropped center lid). Really nicely done piece.


It's been sitting on the shelf for thirty years, thru multiple cars that could have used it. Why? Because the drop is SO EXTREME, that no throttle linkage works, no kick down has room, can't even hook up fuel lines to a holley. So, it's garage art.
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Deeper than this?

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I dont know if this will help but here goes/ 69 dart stock flat hood, modified shumaker mounts, performer rpm intake, demon carb. The airfilter was hitting so I used a K and N top half and a drop base. Got me enough room to only put a circle indentation in the underhood insulator. This on a 400 motor.
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I couldn't quite fit the RPM on my 400 based 451 with a 1/2" n20 plate, L88 housing and a 14x3. With a Holley SD it barely cleared.
 
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