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Discussion Starter #1 (Edited)
Are the 360/390 FE blocks used in light duty trucks beefed up in comparison to the 390 FE blocks put in cars? If so just how much of a difference?
 

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Are the 360/390 FE blocks used in light duty trucks beefed up in comparison to the 390 FE blocks put in cars? If so just how much of a difference?
A 391 truck block had better parts in it like forged crank, but the 360-390 truck block was the same as used in the cars of the same years.
 

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I know the 361/391 motor is beefed up a little. as someone already said, they have a forged crank, and I believe the cast is heavier in the webing around the main bearings. I've also read that the motor mounts are heavier duty. I'm pretty sure the motor as a whole is quite a bit heavier and only really useful if you're using as a heavy haulling app.
 
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