I'm thinking of putting my 428CJ cast headers in my '72.
Before I get under the truck and start pulling the tube headers and exhaust out...
Has anyone here who has a 428CJ managed to use the cast headers?

 

Do you have 428CJ heads on your '72? CJ heads have 16 bolts your tube headers probably have 8 bolts.

 

My apologies as I thought that I had corrected my profile.
Yes my second '72 F250 is powered by a 428CJ.
Since this picture was taken I have swapped out the Galaxie dual-quad for the original 428CJ dual-quad.
The headers are Doug Thorley. A mistake that I wish to rectify by replacing with the 428CJ manifolds.

 

Wow, I bet that thing doesn't like to pass a gas station up. That's a lot of carb! Sure looks good too.

 

Ah, seem to have similar taste in engines. I have a 428CJ, med riser 2x4/toploader/4.56 gears in my '69 F100. Gas mileage was never a concern.
I have a set of long tube cast irons on my '64 Galaxie and many years back I tried to eye them up for the truck. I think the crossmember under the bellhousing will be in the way big time. Cars don't have that since they aren't twin I beam. A set of shorties might fit?

 

I remember a guy on here had to hack up the frame rail by the starter area.

I also was thinking about the 4+06/427 headers but then just bought some petty coated Sanderson headers..
Orich

 

I realized yesterday after I posted, the 428 manifolds are not long(like the typical long tubes I have). I don't know how bulky they are and would they clear the framerails?

 

Some 20+ years ago I looked at installing the 406 cast headers into my truck. Notching the frame was just the beginning on the passenger side.
But the CJ manifolds look like they'll fit. The truck engine bay is wider than the Mustang and just as deep. The passenger side tucks up by the firewall and it looks like it'll be fairly easy to bend the exhaust to plumb it out in a semi-stock fashion.
The driver side looks like it will be equally easy but I've got to pull the existing system out to be sure.
That project is on hold as I decided to try removing the end of my little finger working on loosening the spring U-bolts yesterday.
Fudged it up pretty well and didn't even begin to budge the nut...

 

Nah. A dual-quad is just like a single until one opens the whole shebang. There are two 600CFM carbs but the vacuum signal is divided between the 2 carbs so each one is, essentially a 300CFM carb.
That's why the factory could put on two 780CFM carbs and not overflow the system.
I get 10.1MPG 99% of the time. But, occasionally, I do enjoy the thrill of the acceleration more than I should. Grin...

 

Well, that's what those carbs are for- the G Forces, and a little sound-LOL.