I would do the big block swap in a heart-beat since I have a 74 D100 factory 440 and a 77 4x4 Ramcharger with a factory 440, i'm also stuffing a 440 in a 1980 Mirada right now with about 6 more 440's laying around) and absolutely love the low rpm torque! On the exhaust I would steer away from using the factory pickup exhaust manifolds since they are very restrictive and they also tend to always burn out the middle of the valve cover gaskets and burn the paint on the valve covers since the manifolds tuck up so close to the valve covers. On both of my 440's I use the 78070 Headman shorty headers and they clear everything very well the only issue is you need to run the smaller nippendenso starter to clear the headers.

looks like thats listed for E or B body cars but hey if they work ill keep that in mind thanks

Here is the clearance with a 440 and the big booster

Here is all the BB stuff. E manifolds, oil pan and dipstick, mounts for 75-80 4wd. P/S pump setup.

Just another prime example of a reproduction company that does not what their product fits .This style of mount fits 72-4 2wd and 4wd and 75-up 2wd. Does not fit 75-up 4wd.

good information, good pictures

Over the last few years boosters have fallen in to the same black hole that heater cores fell in to.

Would like a pattern of those mount since I’m making mine. How close does a stock pan get to the crossmember? I’m thinking of using C-Body hp manifolds, I have the headers but I have the red express and the pipe can’t go back that far to hookup to the muffler and side pipes. I have a 5.7 too but what a can of worms that is.! Also a 380-360, too many options

Here is shot. Could use shorty headers

that looks like a really nice truck! Can you post some engine bay pictures for us please?

That is a lot of room for the pan, I’m thinking it’s back that far for the front axel. Non 4x4 a regular pan will work. Looking good on the truck, I’d be afraid to get it dirty

Your saying a car center sump might work? That I don't know.

It was a 77 Macho Power Wagon I built for a customer about 4 years ago. I swapped the 360 for a 70 440 with a 6-pack.

One more thought on the booster clearance, I did researching on this some time ago and read that you can move the booster over for more clearance, never heard of doing that. And not sure how thats done? My buddy that had the 440 that cleared the booster until he replaced rubber mounts and said it was a no go, tells me they were not original valve covers but looked like some sort factory cover. I wonder if the truck valve covers are truck specific?

Driver side valve cover is truck specific but as far as I know that's about Van applications, not booster clearance. Vans use a remote oil fill tube that runs from the front of the driver side valve cover up to somewhere near the radiator. Non van truck engines use the same valve cover but put a rubber plug in that hole.

The valve covers on the 440 I swapped in were the original C-body ones ('77 Gran Fury).

I can tell you from experience that a big block center sump car oil pan doesn't work well with a 4x4. I put a 70 400 into a 70s 1/2 ton that had a dis functioning 4x4 setup, but retained the front axle (a broke teenager that needed a truck, bought the 4x4 without a drive train and had a 400 & 727 sitting). After the install, I slid into a ditch in a snow storm, the front axle smashed the oil pan and bent the pickup tube. Gene

Maybe find a donor truck? If you can find a rusted out or beat up truck, you would have everything you need, and other extra parts as a bonus. They are out there, and although, prices of these trucks are a lot more than they used to be, it could cost you less in the long run. You can also sell the rest of the parts to recoupe some cash. Just a thought...

So it will fit on a two wheel drive? Just eyeballing I thought it would even if notching the frame. A hammer and dolly can fix a valve cover too. 440 with six-pac ac unleaded heads and regular gas here I come.

I think the ones in the macho above are too. No oil fill plug and the booster recess needed in the later Cs.