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Old Oct 8, 2009 | 12:31 PM
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Question Fe Blocks

I have a basic question for ya’ll. Are all fe blocks the same. I have been told that there is a difference in the motor mounts. Some Fe are for cars and others for trucks.

I was competing an engine for my truck some years ago and this older bench racer told me to be careful about choosing blocks. I had bought a block from a junk yard and was rebuilding it while I still drove the truck.

Well the block and motor mounts fit so I was relived. But the question has all way been at the back of my head.

Bill
 
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Old Oct 8, 2009 | 01:01 PM
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They are not all the same. The engine mount change was somewhere around '63 iirc, which I probably don't.

They are cast for different bore sizes as well. You can't take a 4" 352 block and bore it to a 4.23 427 bore or even a 4.13 406/410/428 bore.

And 427 blocks, and some 406 blocks are different, with provisions for cross-bolted mains.

The most common, the 360/390, are the same.
 
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Old Oct 8, 2009 | 01:22 PM
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Originally Posted by 85e150six4mtod
They are not all the same. The engine mount change was somewhere around '63 iirc, which I probably don't.

They are cast for different bore sizes as well. You can't take a 4" 352 block and bore it to a 4.23 427 bore or even a 4.13 406/410/428 bore.

And 427 blocks, and some 406 blocks are different, with provisions for cross-bolted mains.

The most common, the 360/390, are the same.
The motor mount change was 1965. The early blocks had only two (2) mount holes and the late ones had three (3).
 
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Old Oct 8, 2009 | 01:32 PM
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Thanks for the correction.
 
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Old Oct 8, 2009 | 06:20 PM
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Yes I have seen the different bolt patterns with the motor mounts between 2 and 3 bolts. The newer FE trucks had 2 bolt and the older FE cars have 3 motor mount bolts. But will the older pattern mount up to newer perches, IDK.
 
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Old Oct 8, 2009 | 07:49 PM
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Originally Posted by boxer.fan
Yes I have seen the different bolt patterns with the motor mounts between 2 and 3 bolts. The newer FE trucks had 2 bolt and the older FE cars have 3 motor mount bolts. But will the older pattern mount up to newer perches, IDK.
Wrong, the old original pattern is two bolt for cars from day 1 of the FE engines back in 1958. The reason for the change to 3 bolt was that it was felt that 2 bolt was not strong enough for the trucks.
 
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Old Oct 9, 2009 | 05:15 AM
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Originally Posted by Bear 45/70
Wrong, the old original pattern is two bolt for cars from day 1 of the FE engines back in 1958. The reason for the change to 3 bolt was that it was felt that 2 bolt was not strong enough for the trucks.
I'll drink to that.




John
 
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Old Oct 9, 2009 | 05:32 AM
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Originally Posted by 85e150six4mtod

They are cast for different bore sizes as well. You can't take a 4" 352 block and bore it to a 4.23 427 bore or even a 4.13 406/410/428 bore.
Also the 410 IS the same as the 360/390 bore.
 
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Old Oct 9, 2009 | 12:36 PM
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Originally Posted by Bear 45/70
Wrong, the old original pattern is two bolt for cars from day 1 of the FE engines back in 1958. The reason for the change to 3 bolt was that it was felt that 2 bolt was not strong enough for the trucks.
Which is strange, as every truck motor mount I've seen for the FE in the 73-77 range has been a two-bolt mount.

 
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Old Oct 9, 2009 | 02:51 PM
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Originally Posted by Krewat
Which is strange, as every truck motor mount I've seen for the FE in the 73-77 range has been a two-bolt mount.

That is the exact mount that was on the 375 hp 390 out of a 1961 Custom, which was hell to put into my 1966 Comet because of the 2 bolt mounts on the engine and with the car having the 3 bolt mounts. My 1968 F250 Camper Special with 390 had 3 bolt mounts.

http://shop.oreillyauto.com/product_...g/anh/2240.jpg

Why on earth would Ford build car engines with 3 bolt mounts and trucks with 2 bolt mounts? Just not gonna happen.
 
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Old Oct 9, 2009 | 02:58 PM
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Originally Posted by monsterbaby
Also the 410 IS the same as the 360/390 bore.
Darn, another brain fert.... thanks for the correction.
 
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Old Oct 9, 2009 | 04:41 PM
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Bear, those are the exact mounts used on the 70's pickups. 2-bolt.

Can't say about the pre-73, as I've never seen one first-hand.
 
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Old Oct 9, 2009 | 04:46 PM
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Got me looking and the block I have in my car is a 68 and it's a 3 bolt, the 67 galaxie called for that one. The D4TE block I have is a 2 bolt and that is obviously out of a pickup. I thought the only ones that had the 3 bolt were the FT blocks but guess thats not right
 
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Old Oct 9, 2009 | 04:50 PM
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All 4 of the 428CJ blocks I had were 3 bolt as were both of my 1966 Mercurys, a Comet and a Cyclone.
 
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Old Oct 9, 2009 | 05:38 PM
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Da Bear aint going down easy on this one. Somebody get something to drink.




John
 
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