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Old Feb 15, 2004 | 08:09 AM
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kaleide
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From: Edmonds
new guy truck question
I just picked up a 1979 F250 4x4 351(don't know which 351)

Is there a way to find out what 351 is in there? It feels like it's got no low end torque.... although I don't know the gear ratio and there are 265/75/16 tires on it...

Completely new to trucks, been wanting one for a while!!
 
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Old Feb 15, 2004 | 08:27 AM
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brown 4x4
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If it's the stock engine, it's a 351M. That's the only 351 Ford offered in these trucks.
 
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Old Feb 15, 2004 | 08:46 AM
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For lots of info on your truck, check this link on FTE & enter the VIN
http://www.medicine.wisc.edu/~mrm/bronco/ftvin.cgi
 
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Old Feb 15, 2004 | 11:15 AM
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Ford realy did not offer different versions of the 351m they were all 2 barrels and were never really known for there loads of power. A compresion test on all the cycliders and a good tune up may be in order.
Good luck with the new truck
 
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Old Feb 15, 2004 | 07:56 PM
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yep most likely a 351m motor.
 
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Old Feb 16, 2004 | 08:46 AM
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To verify which 351 you have, count the valve cover bolts and notice where the upper rad hose attaches to motor - block or intake, horizontal or vertical?

Marty
 
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Old Feb 17, 2004 | 09:32 PM
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From: Edmonds
goes vertically into block reason is because the last owner replaced the engine and I don't know which 351 he swapped in...
 
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Old Feb 19, 2004 | 09:40 AM
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I believe the 351M/400 has 8 valve cover bolts and the rad hose mounts to the block. The 351 W has 6 valve cover bolts and the rad hose mounts to the intake.

Marty
 
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Old Feb 19, 2004 | 11:13 PM
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The 351s and 400s are traditionally "soggy" engines due to their low compression ratio. They can be made snappier if built right. It wont be a 351 C, and likely not a W
 
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Old Feb 20, 2004 | 07:37 AM
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From: Edmonds
Thanks for all the info!!
 
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