flexplate help

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Feb 15, 2008 | 07:49 PM

dragogt

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From: conroe tx

flexplate help

working on a 302 to 351 swap, but I'm having problems finding a flexplate that fits the 351. (it's a mid 70's model mercruiser engine) I'm on my 3'rd one from O'reilly and it doesnt sit all the way back on the crank, it only go's about half way and stops. Any idea's, tips, or tricks would be appreciated.

tks drago

Feb 15, 2008 | 08:52 PM

Bimmerboy1989

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Get a bigger hammer?

Feb 15, 2008 | 09:02 PM

dragogt

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From: conroe tx

trust me it crossed my mind, but I don't wont to screw any thing up. Also thought about drilling the holes out a little, but I don't think I should have too.

Feb 16, 2008 | 06:55 PM

dragogt

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From: conroe tx

come on guy's, I know somebody in here knows the answer to this.

Feb 16, 2008 | 08:56 PM

Bimmerboy1989

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So is the flexplate you have tried a 351C Flex plate, a 351W flex plate or a 351M flexplate? Can you give me the part number of the flex plate they have given you? FRA201? or FRA205? When I go to work tomorrow I will try and post some possible flexplates.

Feb 16, 2008 | 08:57 PM

Bimmerboy1989

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Oh, What kind of transmission is it hooking up to, and what motor was it? a 351C, 351W, or 351m?

Feb 16, 2008 | 09:14 PM

dragogt

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From: conroe tx

it's a 351W hooking up to a C6 and a 302 coming out of my bronco.

started out w/ fra-203 then went to fra-205 and last but not least I got fra-201 which fits the best but's still not right.

Last edited by dragogt; Feb 16, 2008 at 09:17 PM.

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Feb 16, 2008 | 09:18 PM

dragogt

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From: conroe tx

cool man thanks.

Feb 17, 2008 | 08:42 PM

#10

Kemicalburns

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From: Bend,OR

what year is the 351w motor? if its pre 82 then it would be the same imbalance as the 302 if the 302 was pre 82 as well. so you could use the 302 flexplat on the 351w. if that doesnt fit then you dont have a 351w.

Feb 17, 2008 | 09:07 PM

#11

dragogt

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From: conroe tx

it's a '74 block Mercruiser used between '75-'77. https://www.ford-trucks.com/forums/6...ne-pt-2-a.html

I thought that in '83 ford switched to the 50oz imbalance?

Feb 18, 2008 | 09:53 AM

#12

toolman

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From: Spokane, Wa.

How close to they actually get ? I've got a block out of a Galaxie which used an ever so slightly thinner flexplate, along with a thin stiffener plate. ( Thanks again Number Dummy !! )

Just a thought !

-Scott in Spokane

Feb 18, 2008 | 10:00 AM

#13

dragogt

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From: conroe tx

if you mean plate to block, it's still about a 1/2" away from seating in place.

like I said I'm open to any and all Ideas.

tks, Drago.

Feb 20, 2008 | 02:23 PM

#14

Bimmerboy1989

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I'm sorry it took a few days for me to get back. I found that a 79 Ford pickup with a 351w and a C6 transmission takes a fra-202 flexplate. This flex plate should fit what you have.