what is the PCM Ford 351 engine based on
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Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=1207
Printed Date: November-22-2024 at 9:58am
Topic: what is the PCM Ford 351 engine based on
Posted By: javagif
Subject: what is the PCM Ford 351 engine based on
Date Posted: February-13-2005 at 11:25am
What is the exact type of the PCM 351 Ford V8 engine.
Is it a 351M, 351C, 351W ?
..and in what car was it basically installed?
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Replies:
Posted By: jameski
Date Posted: February-13-2005 at 12:03pm
It's the 351W, but most of them (except for recent years) are reverse rotation from a car, and they have many significant differences.
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current boat
http://www.correctcraftfan.com/diaries/details.asp?ID=1977 - 94 Sport Nautique
previous boat
http://www.correctcraftfan.com/diaries/details.asp?ID=601 - 78 Martinique
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Posted By: David F
Date Posted: February-13-2005 at 12:44pm
I think the the 351W was mostly used in Ford trucks. I cannot remember if mine had 2 or 4 bolts mains. But, if like Chevy's, a trunk engine would use the 4 bolt main whereas a car would probably use the 2 bolt main. Ford may not do this so...
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Posted By: Guests
Date Posted: February-13-2005 at 2:51pm
hmmm...No cars... yes its called the Truck/Marine shortblock. Ford doesn't do the 4 bolt main thing on the windsors, thats a chevy thing.
The truck/marine shortblock has different rods and rod bolts, that permits more material to be left where it most necks down..
The rod bolt heads are round instead of the auto rod bolts, that are like a 'T' or some call them 'oval'.
The Marine heads are not machined for the thermacter air pump outlets in the exhaust port, but I think they have the material still there, in the way.
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Posted By: captan1
Date Posted: February-13-2005 at 3:14pm
I've also heard the crank is turned in the opposite direction from a car or truck, has to do with the microscopic burs left after polishing facing the right direction for reverse rotation, And don't forget about the outrageously priced crank seals with opposite oil return ridges on them, and of course the distributor drive gear on the cam is bass ackwards to drive the distributor the normal direction in the reveres rotation scenario. Makes swapping in a create engine a drag.
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http://www.correctcraftfan.com/diaries/details.asp?ID=452&sort=&pagenum=1&yrstart=1978&yrend=1978 - 1978 Ski Nautique
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Posted By: Bradley950
Date Posted: March-09-2005 at 1:09am
Would this mean the engine water pump is also reverse rotation?
Brad
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Brad Miller
bradley950@yahoo.com
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Posted By: jameski
Date Posted: March-09-2005 at 10:14am
Most of the circ. pumps have non-directional impellers - but if you replace yours you should double-check.
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current boat
http://www.correctcraftfan.com/diaries/details.asp?ID=1977 - 94 Sport Nautique
previous boat
http://www.correctcraftfan.com/diaries/details.asp?ID=601 - 78 Martinique
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Posted By: Guests
Date Posted: March-12-2005 at 11:37pm
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FYI in the mid 80's ford went to a one piece rear main seal and at time started using the same crank for there left and right motors. the seal made the differance.
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