flywheel for '86 351W
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Posting Guru
Joined: Jun 2001
Posts: 1,236
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From: Vancouver Island
flywheel for '86 351W
Yes, it's another dumb flywheel question.
I'd like to use the 351W from an '86 Grand Marquis with a '71 truck bellhousing and NP435. I don't have the '71 flywheel, but I have a clutch set. (This is going into a '57 Ford panel truck)
The question is: will a '70s 302/351W flywheel work (28 oz balance), or should it be a later 351W ('83 to '94) flywheel? It seems to me the early flywheel should work, but a local machine shop told me an 86 engine needs a different flywheel because of the one-piece seal.
Most of the possible flywheels are 164 teeth, but there are some different diameters: 14.25", or 14.215, or 14.313" OD. That confuses me.
The Grand Marquis engine comes with an AOD, but since the truck is already set up for a four-speed I'd rather keep it that way.
There's also an '85 F250 parts truck with a smoky 351W and 4 speed I could get for a couple hundred $, which starting to sound like a better idea since I'd get everything from one year.
Thanks for your help!
I'd like to use the 351W from an '86 Grand Marquis with a '71 truck bellhousing and NP435. I don't have the '71 flywheel, but I have a clutch set. (This is going into a '57 Ford panel truck)
The question is: will a '70s 302/351W flywheel work (28 oz balance), or should it be a later 351W ('83 to '94) flywheel? It seems to me the early flywheel should work, but a local machine shop told me an 86 engine needs a different flywheel because of the one-piece seal.
Most of the possible flywheels are 164 teeth, but there are some different diameters: 14.25", or 14.215, or 14.313" OD. That confuses me.
The Grand Marquis engine comes with an AOD, but since the truck is already set up for a four-speed I'd rather keep it that way.
There's also an '85 F250 parts truck with a smoky 351W and 4 speed I could get for a couple hundred $, which starting to sound like a better idea since I'd get everything from one year.
Thanks for your help!
Junior User
Joined: Apr 2001
Posts: 51
Likes: 1
From: Vancouver Island
flywheel for '86 351W
Never mind. I've located a complete drivetrain, a '79 with 351W and a 5 speed. Engine was rebuilt 25,000 miles ago. Now, since I've read that 351W's and 5 speeds weren't used in '79 F150's, I'll believe it when I see it.
Thread Starter
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Posting Guru
Joined: Jun 2001
Posts: 1,236
Likes: 2
From: Vancouver Island
flywheel for '86 351W
In case anyone actually cares, I drove out and looked at the truck: it was a 351M with 4 speed. (more than six valve cover bolts, thermostat in block, dipstick in block, and it said 351M on a sticker on the valve cover...).
Think I'll just put a 223 six in for now. At least the van will move, just not very fast.
I still wouldn't mind knowing which flywheel to use with an 86 351W and a 71 bellhousing, if someone reading this knows.
Think I'll just put a 223 six in for now. At least the van will move, just not very fast.
I still wouldn't mind knowing which flywheel to use with an 86 351W and a 71 bellhousing, if someone reading this knows.
