Difference in 352 and 390
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Difference in 352 and 390
Hi
I had my engine rebuilt and made into a 390. In putting in new clutch I am having trouble as the adjustment is off. I am at the end of the adjustment and it needs a little more.
It was in the middle of the adjustment with old motor and old clutch. The flywheel was perfect before, so no turning.
Is the crank shorter on the back of engine? Do I need a different flywheel?
Any help is appreciated. This is on a 66 F100 with a NP435 trans.
Jim
I had my engine rebuilt and made into a 390. In putting in new clutch I am having trouble as the adjustment is off. I am at the end of the adjustment and it needs a little more.
It was in the middle of the adjustment with old motor and old clutch. The flywheel was perfect before, so no turning.
Is the crank shorter on the back of engine? Do I need a different flywheel?
Any help is appreciated. This is on a 66 F100 with a NP435 trans.
Jim
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From: Long Island USA
Reverse the motor mounts and now the engine is not sitting in the right place for the mechanical clutch linkage?
Take a look at your tranny mount and see if it's pushed towards the back or front?
Just throwing stuff out there.
I had issues after doing the 390 for my highboy - are you SURE the flywheel wasn't surfaced? Maybe the original flywheel had a step in it for the clutch plate? Or used the wrong one?
With everything assembled, the lever that sticks out of the side of the bellhousing, is it parallel with the back of the engine block? Or is it more towards the back of the vehicle?
I assume you mean the adjustment is OUT as far as it goes?
Take a look at your tranny mount and see if it's pushed towards the back or front?
Just throwing stuff out there.
I had issues after doing the 390 for my highboy - are you SURE the flywheel wasn't surfaced? Maybe the original flywheel had a step in it for the clutch plate? Or used the wrong one?
With everything assembled, the lever that sticks out of the side of the bellhousing, is it parallel with the back of the engine block? Or is it more towards the back of the vehicle?
I assume you mean the adjustment is OUT as far as it goes?
Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
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From: CT
There are also 2 types of block plates. Early plates just had the cam plug hole cut out as the blocks hyd lifter galleys used press in cup plugs thru 68. 69 and later blocks used threaded plugs in the blocks oil galleys and required the block plate to have holes drilled in those locations so it would sit flush to the back of the block. If that's the interference problem just mark and drill holes thru the block plate.
And true early engines used no block plate. I forget when they started? 60 or 62?
And true early engines used no block plate. I forget when they started? 60 or 62?
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
How long is your clutch adjustment rod, and is it one piece or two pieces?
Originally the rod, which is 3 29/64" long had an pointed extension (2 27/64" long) which slipped over the threads and was tightened up with two nuts.
If the extension is missing, you cannot get enough adjustment.
DOTZ7521C.. Clutch Adjustment Rod Kit-Includes Pointed Extension / Obsolete
DOTZ7A504A .. Pointed Extension ONLY / 2 27/64" long / 3/8' I.D. / 5/8" O.D. / Obsolete
Rod & Extension fits: 1965/72 F100/350 2WD/4WD 6 or V8 (except 1969/72 F100 302).
Obsolete parts vendor Green Sales Co. in Cincinnati OH has 4 rod kits and 1 extension: 800-543-4959
MAKE SURE if you buy the rod kit, the extension comes with it!
Sneaky Ford parts counterguys (
) sometimes robbed the extension out of the kit, and forgot to replace it.
Originally the rod, which is 3 29/64" long had an pointed extension (2 27/64" long) which slipped over the threads and was tightened up with two nuts.
If the extension is missing, you cannot get enough adjustment.
DOTZ7521C.. Clutch Adjustment Rod Kit-Includes Pointed Extension / Obsolete
DOTZ7A504A .. Pointed Extension ONLY / 2 27/64" long / 3/8' I.D. / 5/8" O.D. / Obsolete
Rod & Extension fits: 1965/72 F100/350 2WD/4WD 6 or V8 (except 1969/72 F100 302).
Obsolete parts vendor Green Sales Co. in Cincinnati OH has 4 rod kits and 1 extension: 800-543-4959
MAKE SURE if you buy the rod kit, the extension comes with it!
Sneaky Ford parts counterguys (
) sometimes robbed the extension out of the kit, and forgot to replace it.
