5.0 vs 5.8 flywheel

Reply Subscribe

Thread Tools

Search this Thread

Jan 5, 2010 | 06:31 PM

USAF FordGuy

Thread Starter

Senior User

Joined: Nov 2009

Posts: 102

Likes: 0

5.0 vs 5.8 flywheel

Just outta curiousity... for the second time Im changing out my transmission on my 89 with the 5.8 and the flywheel is bad. I have an 84 5.0 as a parts truck, will the flywheel work on the 5.8 from the 5.0???

Jan 5, 2010 | 07:57 PM

Conanski

FTE Legend

Joined: Jun 2006

Posts: 31,930

Likes: 1,499

From: Ottawa, Ontario

No, same size but the 5.0 version is 50oz imbalance while the 5.8 is 28oz.

Jan 5, 2010 | 08:01 PM

USAF FordGuy

Thread Starter

Senior User

Joined: Nov 2009

Posts: 102

Likes: 0

Thanks for the help, arg. Would going with a used one from a junkyard be ok??

Jan 5, 2010 | 09:14 PM

American Thunder

Elder User

Joined: Apr 2009

Posts: 725

Likes: 1

From: Upstate New York

As long as the ring gear teeth are good and there's no cracks around the bolt holes.

Jan 6, 2010 | 10:47 AM

Kemicalburns

Hotshot

Joined: Jul 2002

Posts: 14,285

Likes: 12

From: Bend,OR

and you are infact getting the right flywheel. i dont always trust what the yards say those are. unless you physicaly see the flywheel being pulled from a 5.8

Jan 6, 2010 | 12:05 PM

alxsnmr

Fleet Mechanic

Joined: Mar 2005

Posts: 1,603

Likes: 1

From: St Louis

Flywheel or flexplate? They are two different things as a flywheel is for a manual transmission to which the clutch pressure plate bolts to while the flexplate is on an automatic transmission which the torque converter bolts to.

Jan 6, 2010 | 05:03 PM

American Thunder

Elder User

Joined: Apr 2009

Posts: 725

Likes: 1

From: Upstate New York

You can visibly see the difference between zero oz, 28 oz and a 50 oz imbalance weights. Compare the junkyard piece to your old one, to verify the correct balance weight. If it has no balance weight at all, it's off a 240/300 inline 6, which will physically bolt up to a 302/351, but the zero imbalance wouldn't be good for the V8.