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4.9 block compatability

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Old Nov 23, 2002 | 09:10 PM
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From: charleston usa
Post 4.9 block compatability

[updated:LAST EDITED ON 23-Nov-02 AT 10:18 PM (EST)]Was given a 1987 F-150 w/4.9 L-6. Told computer is out and needs timing gears. Unsure of condition of engine. Can get reliable 4.9 from uncle out of 84. I know that the heads are different. Are the blocks the same?
 
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Old Nov 23, 2002 | 09:17 PM
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4.9 block compatability

all motors from 87-95 are the same, and utilize the same parts. pre-87 trucks had carbs and different heads, intake, and exhaust, ant the 96 had a different computer setup, but mechanically was the same.
 
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Old Nov 23, 2002 | 09:21 PM
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4.9 block compatability

Thanx for the reply, i accidentally put 94 , meant 84. trying to put truck on road as inexpensively as possible. any tip would be great.
 
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Old Nov 23, 2002 | 09:25 PM
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4.9 block compatability


The 84 300 would have a engine block fuel pump. I'm not sure if you can buy an bolt-on cover for it or not.

Otherwise it should work fine.

Use your Serpentine bolt system


 
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Old Nov 23, 2002 | 09:38 PM
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4.9 block compatability

thanx for reply. have a "ford guru" friend near uncle w/engine. will consult with him about fuel pump difference. I thought the basic L-6 design hadn't changed , and this seemed like a good place to ask.:-X12
 
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Old Nov 24, 2002 | 12:58 AM
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4.9 block compatability

A smallblock chevy fuel pump cover will fit.
 
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Old Nov 26, 2002 | 11:05 AM
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4.9 block compatability

 
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Old Dec 23, 2002 | 02:48 AM
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4.9 block compatability

First check to see if the block has a provision for a knock sensor, look on the 87 motor and then on the 84 motor, other than that yes the blocks are the same

 
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Old Dec 23, 2002 | 07:48 AM
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4.9 block compatability

The old block doesn't have the KS, but you can drill & tap the hole for it.
 
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Old Dec 23, 2002 | 01:00 PM
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4.9 block compatability

Actually, it's a big block chebbie fuel pump cover. The small block plate uses four bolts, while the big block one uses two.

Jared
 
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Old Dec 23, 2002 | 05:13 PM
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4.9 block compatability

[updated:LAST EDITED ON 23-Dec-02 AT 06:14 PM (EST)]Small chevy's have 2 bolts on the fuel pump or the block off plate, not 4. I know, my friend's race car is a small block chevy.
 
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