Motor mounts
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
Which/what "truck" flywheel are you referring to? 1983 was the first year the 460 was available w/a M/T (and 4WD). All 1968/82 460's came with C6's.
D1SZ-6375-A (replaced C8SZ-6375-A) .. Flywheel (flexplate) = ALL 1968/73 429; 1968/78 460; some 1979 460.
D9TZ-6375-A .. Flywheel (flexplate) = Some 1979 460; 1980/97 460.
D1SZ-6375-A (replaced C8SZ-6375-A) .. Flywheel (flexplate) = ALL 1968/73 429; 1968/78 460; some 1979 460.
D9TZ-6375-A .. Flywheel (flexplate) = Some 1979 460; 1980/97 460.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
A flywheel, not a flexplate....
Prior to 1983 you could only get a 460 truck with automatic.
The "truck flywheel" should be marked e3te-6375-aa iirc
'T' because it was designed for trucks, not V for Lincoln division....
For that engine he's going to need a zero balanced flywheel.
SFI billet ones are really expensive.
Maybe a 390 flywheel would work.
Or just bring that one to the engine shop and they will mill the weight off and check for zero.
Prior to 1983 you could only get a 460 truck with automatic.
The "truck flywheel" should be marked e3te-6375-aa iirc
'T' because it was designed for trucks, not V for Lincoln division....
For that engine he's going to need a zero balanced flywheel.
SFI billet ones are really expensive.
Maybe a 390 flywheel would work.
Or just bring that one to the engine shop and they will mill the weight off and check for zero.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 784
From: Simi Valley, CA
Pic: Scroll down to 6375
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Elder User
Joined: Aug 2009
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Awesome, don't you love good deals like that? Ok, I'll ditch the porkchop and replace with regular spacer, as for the flywheel, I assume I can pull it and get it zero balanced at a shop? I really wish I could find info on this crank, just to quench any fears of a external balance crank in a internal balance engine. I know it's got truck rods and Pistons....
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
If you don't have leaks why worry about the seals?
They're rubber and don't usually go bad until the spacer or rear flange get scored by wear.
If you want to pull the engine and take off the pan you can tell right away if it is a 2Y or 3Y crank.
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Elder User
Joined: Aug 2009
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I found a machine shop that can zero balance the flywheel, I guess I can troll the interwebs for the spacer, unless anyone wants to get rid of one. With the flywheel and dampener off I'll put a dial indicator on and check for any play.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Might check out the BB forum here on FTE, look thru the Stickies and see what they have there:
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460) - Ford Truck Enthusiasts Forums
There are also places like 460ford.com that probably have some good information, too.
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Elder User
Joined: Aug 2009
Posts: 928
Likes: 2
Thanks everyone for the help! It's been running unbalanced this long, I'll replace the spacer and zero balance the flywheel. Ill start doing research for a rebuild this winter. Who knows what I'm gonna see when I crack this thing open.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
ie: Second flywheel!
-Enjoy
fh : )_~
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
They are not cheap.
Look at prices for an L&L or McLeod piece.
Or an old stock 429 SCJ one!!!
A 390 flywheel will work.
.... Maybe one from a medium duty 370/429 engine. They are still internal balance, but I dont know what they use for a clutch or starter.
Look at prices for an L&L or McLeod piece.
Or an old stock 429 SCJ one!!!
A 390 flywheel will work.
.... Maybe one from a medium duty 370/429 engine. They are still internal balance, but I dont know what they use for a clutch or starter.
Methanoholic
Joined: Mar 2009
Posts: 6,442
Likes: 8
From: Maine (NorCal Native)
It is still something to think about!
Wouldn't you rather cut up your JY special then your good one!
At least until theory proven, yea at the expense of two balance jobs that cost a lot less then some flywheels!
Personally, I'm smart enough not to go cutting up a McLeod without knowing for a FACT that is what I want to do!
I do not know all the intricacies of Ford Gassers, In fact few, that is exactly why I listen and only make general related comments!
I allow those of you that know the intricacies teach me!
-Enjoy
fh : )_~
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 38
From: EXTREME southwest CT
Okay, The intricacies are:
460's never came with a zero balanced flywheel.
SOME rare & early 429S/CJ engined cars had manuals. (Torino & Mustang)
Companies like L&L make billet flywheels to fit the (go ahead and kill me for this Bill...) pre '79 -internal balance- 385 series engines.
No one is suggesting to cut one of these. They are made for this swap application and cost $400 or more.
Or, you can use a 390 flywheel. These bolt up and are zero balance, but are only drilled for an 11" clutch.
Medium duty trucks (think F-6/700 bucket truck) had 370 or 429 engines that retained internal balance up into the '90's.
But I'm not sure what ring gear or clutch they used.
460's never came with a zero balanced flywheel.
SOME rare & early 429S/CJ engined cars had manuals. (Torino & Mustang)
Companies like L&L make billet flywheels to fit the (go ahead and kill me for this Bill...) pre '79 -internal balance- 385 series engines.
No one is suggesting to cut one of these. They are made for this swap application and cost $400 or more.
Or, you can use a 390 flywheel. These bolt up and are zero balance, but are only drilled for an 11" clutch.
Medium duty trucks (think F-6/700 bucket truck) had 370 or 429 engines that retained internal balance up into the '90's.
But I'm not sure what ring gear or clutch they used.
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