Swapping a 240 out for a 351w
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Swapping a 240 out for a 351w
I’m gathering parts to begin a engine swap. On my 1968 f100. I will be pulling the factory 240 out of the trucks and installing a 1986 351w out of a E250.
the truck is a 3 speed on the column.
My question is: will my bellhousing and transmission work with the 351w? Will my clutch work with the new engine?
I understand from what I have researched and read.
I will need a flywheel because the 240 is internally balanced engines. Is the flywheel I need the same size diameter and tooth wise as my 240 flywheel with the added weights? I understand there are 2 different weighted flywheels a 28oz and I believe a 50 something oz. which one will I need?
Thanks in advance!
any other advise I will be glad to listen too.
the truck is a 3 speed on the column.
My question is: will my bellhousing and transmission work with the 351w? Will my clutch work with the new engine?
I understand from what I have researched and read.
I will need a flywheel because the 240 is internally balanced engines. Is the flywheel I need the same size diameter and tooth wise as my 240 flywheel with the added weights? I understand there are 2 different weighted flywheels a 28oz and I believe a 50 something oz. which one will I need?
Thanks in advance!
any other advise I will be glad to listen too.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
All 351's use the 28 oz wheel. Just make sure the one you get has the same tooth count (diameter also) as the 240's wheel. You may need motor mount perches for a 289/302 in your truck, the one's for the 240 may be different (probably are) I'm not sure if the 240 had the same bell as the small block V8's. You'll likely need a bigger radiator as well
Thread Starter
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Senior User
Joined: Apr 2009
Posts: 318
Likes: 0
All 351's use the 28 oz wheel. Just make sure the one you get has the same tooth count (diameter also) as the 240's wheel. You may need motor mount perches for a 289/302 in your truck, the one's for the 240 may be different (probably are) I'm not sure if the 240 had the same bell as the small block V8's. You'll likely need a bigger radiator as well
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