Greetings everyone!
I am tinkering with my new project, listed above and am awefully disappointed with the 360 (just tired). I want to swap in a 460 as I cannot find a rebuildable 428. Has anyone done this swap recently? I know that my C6 will not mate up so a tranny in in order but will the 460 engine/trans mate to the current transfer case? What will I need to find to get the 460 to sit between the rails? Help! Should I consider an AOD? I plan on running a carb - FI is just beyond the ability to purchase.

Thanks!

 

I havent done it but i dont think it wouldnt be that hard but for the 460 to sit properly you would need the correct motor mounts and do you have a C6 right now i might of misunderstood you but if you said that the C6 wont bolt up to the 460 i pretty sure it does

 

Welcome to the forum.
You will need frame/motor mounts. Since the 4x4's dodn't come with the 460, you will need conversion mounts from someone like L&L products. They are available at www.jeffsbroncograveyard.com and other of our great sponsors.
You will need a C6 from either a 429/460 or 351M/400. These all have the same bellhousing bolt pattern. Not sure on which transfer case that you have.
This swap is pretty common, you might try to search the forum for "460 swap" to find more info.

 

only issue with the tcase transmission hook up is to make sure you have the same length output shaft even if you have to switch it. The mounting part for the case is the same on the back no matter what the trans came out of or what engine it's for.

 

They did not make 460s with the 4X4 option so you have to mix & match stuff to get it to fit & function right.

It takes an aftermarket engine mounting set up with frame stands, engine brackets & insulators. Make sure they cross bolt to prevent engine roll over if insulators fail. It also takes a rear sump oil pan and rear sump oil pick up tube to clear the front diffy & driveshaft assy's. 4X4 late model F-350s with a 460, or the E-300-350 Vans & F-450 Hot Shots ithink use the rear sump set up you can use.

The C-6 from an FE will NOT fot a 385 series pattern block or work on a 377-429 or 460 engine.Use C-6 from 4X4 with 351M-400 engine. Get torque plate, torque converter, and flex plate{ring gear flywheel} and a starter for a 460 with an A/T. The 351M-400 C-6 may have used a different T-Case than what you have now, but it did use a T-Case so you can locate one that will work. Also you may have clearance problems routing headers or exhaust depending on what's going on in your engine bay.

Bottom Line is what you are considering is doable and has been done many times by many people. . . Some folks like L&L Products make an entire conversion set up. you can find them at www.landlproducts.com but shop their parts around because often jobbers sell kits cheaper than their website.

The advice I would give is pick and follow an OEM Configuration for the modifications to make the upgrade work, with the exception of the engine mount system. I hope this is some help to you. . . .

FBp

 

Dustin - I was told that the C6 I have now (for the 360 will not bolt to the 460 and I would need a new one). I did contact L&L and they only have the mounts for a 77 and up. Am I asking the wrong questions to L&L?


Thanks for the help guys!

 

There is little or zero difference in frames between 73 & 79.
In fact the basic frame config on FoMoCo F Series runs from 1965 through 1979. I say Basic because there are subtle variations among some 4X4s and 4X2s. But for an example, I have a 66 F100 on a 79 F-150 Trailer special. It was a virtual Bolt up deal and is 460 with a built C-5 ("small" C-4 like) A/T so frame universiality is pretty close IMHO.

If you read what their "kits" offer they difference betweem 67-76 and the 77-79 kitsd are the engine mount set up I believe one is #040495 & the other is #030495 or something like that. . . . they als include all the stuff I told you to get from OEM FoMoCo F Series & E series Trucks/ Vans.

FBp

 

460 swap
1973-77 f-250 4 wd with 360-390 engine and c-6 transmission

will the 460 bolt up to the c-6 from 360 engine?
no, different bolt pattern

will i have to change the exhaust? yes

will i have to get motor mounts for the 460? yes

will i have change the motor mount towers on the frame ?
yes towers for the 360 set too high and in too far for the 460 block.

will the alternator or power steering brackets from the 360 engine fit the 460?
no ford did not offer the 460 as a option in the f-250 4 wd trucks from 73-79.

what towers can i use for the swap ?

you can either use the towers from the 78-79 f250 but you will have to move the towers forward about two to three inchs. now when you do this only the rear bolt holes will line up so you have to drill two front 7/16" mounting holes. now your other option is to find a early 77 f250 4wd frame that had a 351m/400 in it from the factory and take the tower from it they will bolt right in with no drilling. ford started installing the 351m/400 engines in early 1977 around feb, march, april. then ford switched over to the new frame design for 78-79.


fact: ford never used rivets in the mounting of motor mount towers on the frame they used 4 7/16" x 4" bolts to mount to the side of the frame and 2 ( 7/16x 1 1/2 ) on the top.

 

Mil1ion, thank you for the detail but one question, does this informaiton apply to the F-150 as it does to the F-250?

First things first, thank you for your quick replies! It is my first post to this site - being a frame and body repairman the mechanicals get past me at times but your direction really helps! I'll take this info "scrap-yarding" next weekend and see what I can come up with!

TFC, let me check to see what I can find here, likely not too much, before I try to start shipping things like engines, trans and t cases cross country but I am pretty sure I'll be calling.

Hopefully posting pics soon.