Who has done this swap, I'm having issues... Thanks!

 

What is the issues? What did you get the motor out of? Issues like exhaust manifolds to short, or the passenger side hitting the frame? Car 460 exhaust manifolds will not work. Motor mounts, alternator hitting the main cross member? Pilot bearing issues?

ProjectBronco.COM! A 78-79 Ford Bronco Resource Center check out the L/H side main menu, "Technical" link.

Installing a 460 -- The Right Way!

 

 

Theres a few key things in there I know they are wrong about... They say a 351M flywheel will bolt right up to a 460. The bolt pattern is an inch or so different in diameter

 

All my issues are with the clutch clearance in the bellhousing

 

Are you sure you do not have a standard trans versus automatic trans flywheel? And that is the problem? I am guessing as good as I can, and I have guessed wrong before. So you are 100 % sure you have a 351M bell housing and not a 351C or 351W bellhousing?

I know thew correct pilot bushing really matters.

 

I never checked if it was a 351m but it was in the truck and the previous owner told me 351m the bell pattern matches the 460. No. I do not have an automatic ring gear. I have a flywheel meant to be paired with a clutch and pressure plate
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I'm confused could you explain how I could put an automatic trans flywheel in front of an np435?

 

Well I was spit balling ideas to consider. Internal versus external balance issue?

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460-clutch-bellhousing-flywheel? - Pirate4x4.Com : 4x4 and Off-Road Forum

"The 400 bellhousing isn't going to clear your flywheel, as you've already learned. The external balance 460 flywheel is larger in diameter and deeper. It doesn't work in a 400 bell like a smaller internal balance one does.
I have read of guys just clearancing the inside of the bellhousing, but, I don't see that helping your clutch issue, that may just be the long style clutch instead of a diaphragm.
I really suggest finding a 460/4 speed bell.

 

Just asking it you have parts mixed up, like if you went from one set to another, motor versus trans.

 

I​​​​​​I called your buddy David Mclain and he sent me to a James Freeman. James says all 460 bells are aluminum and will crack with an aftermarket pressure plate.

 

Who is David Mclain? No buddy of mine that I remember. Who is James Freeman? No idea.

I have heard of a 460 guy in Cuba Mo that has a good reputation. I talked to him once on the phone about the cost and time line on getting some motor work done.

Sounds like Dave has a good rep. https://www.jalopyjournal.com/forum/...mclain.420851/

 

I've done this swap. 351M/400 flywheel DOES NOT fit 460. Flywheel is the most difficult/expensive issue when using 351M/400 bellhousing. The ONLY factory flywheel (so I've read) that will fit inside the 351M/400 bellhousing is for a Super Cobra Jet 429. Long obsolete and unavailable. Some have used a 390 flywheel with mixed results for starter issues. I bought a flywheel/clutch kit from L&L in Rowlett, TX. Custom made for this application. Expensive, but fits/works flawlessly and includes 302 pilot bearing that fits in second step of crank - make sure your engine's crankshaft HAS the second smaller deeper step. I think most do. Actual 83 up 460 bellhousings use hydraulic clutch, not Z-bar like the dentsides do.

 

I just got my tranny back from my tranny guy anbolted it all up my 390 flywheel hits my bellhousing not by much though I'm going to clearance that out a bit. And when the bell is bolted snug to the block the tranny hits the throw out bearing/ clutch fork about 1/32" before snugging up so I plan on using two bell housing dust shield/shims and machining a little off my throw out bearing and all appears to work fine after that

 

I built a spacer for my first swap worked very well.But after that I used the 83 up when using any 460 flywheel and have never seen one brake EVER, there all a lot bigger not just the external balanced I just cut the mount for the slave off and used the z bar .but when its internal balanced and I couldn't find a 460 flywheel I used a 390 you just have to make sure your starter gear and ring gear are compatible. I think the ring gear on a 390 is 164 teeth and 460 is 184 but cant remember for sure.and who ever said the fly wheel off 351/ 400 is sadly mistaken not even close.