different weight flexplate
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Senior User
Joined: Jan 2004
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From: Valley City North Dakota
different weight flexplate
Hello Guys,
I am putting a different 5.0 L in my '92 F-150 4 x 4 with the E4od. I have a unit out of an '80 Cougar almost ready to go in. I know there is an issue with the flexplates between the old ones and the '92. I only have one flexplate right now - the one out of my '92. my question is, can i use the flexplate and the vibration dampner off of my '92 on the '80 engine? Will this balance my '80 engine again? would you expect any other differences in between the two blocks? I think i should be able to put all my sensors and induction parts on this one and drop it in right?
thanks guys for alll your help as always.
Micheal
I am putting a different 5.0 L in my '92 F-150 4 x 4 with the E4od. I have a unit out of an '80 Cougar almost ready to go in. I know there is an issue with the flexplates between the old ones and the '92. I only have one flexplate right now - the one out of my '92. my question is, can i use the flexplate and the vibration dampner off of my '92 on the '80 engine? Will this balance my '80 engine again? would you expect any other differences in between the two blocks? I think i should be able to put all my sensors and induction parts on this one and drop it in right?
thanks guys for alll your help as always.
Micheal
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Joined: May 2004
Posts: 12,170
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From: The hills of No. Calif.
Sorry to tell you you're right in the middle of that same 'ol problem of incompatible imbalance weights. The change for the 302 came in '81, so your '80 requires a flexplate and dampner with an imbalance of 28 oz. Your '92 has an imbalance of 50 oz. so you can't use those parts on your '80.
It's more than just the flexplate and dampner that determines the balance, it's also internal.
I think you will need a flexplate from a 351W that had an E4OD behind it. The 351W stayed with the 28 oz. imbalance. You could use dampner from a late '70s 302 with the 4-bolt pulley pattern if you don't already have a dampner for your '80 302.
For the rest of your questions, I think you should be okay, but be aware you've probably got about the worst heads Ford ever put on these engines, and probably not much in the way of a cam either. Expect it to be down on power a bit from your old engine.
It's more than just the flexplate and dampner that determines the balance, it's also internal.
I think you will need a flexplate from a 351W that had an E4OD behind it. The 351W stayed with the 28 oz. imbalance. You could use dampner from a late '70s 302 with the 4-bolt pulley pattern if you don't already have a dampner for your '80 302.
For the rest of your questions, I think you should be okay, but be aware you've probably got about the worst heads Ford ever put on these engines, and probably not much in the way of a cam either. Expect it to be down on power a bit from your old engine.
Last edited by TigerDan; Sep 19, 2005 at 07:33 PM.
Thread Starter
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Senior User
Joined: Jan 2004
Posts: 100
Likes: 0
From: Valley City North Dakota
Thanks
Thanks for the info. I am searching right now for a 351 flexplate. I know this is a doggy engine, but hopefully it will get through for a few months here so i can have time to build my other engine that i want to put in this truck. Just short on funds right now.
thanks very much for your advice and help.
micheal
thanks very much for your advice and help.
micheal
