What differences are there in truck engines?

[auburncord2002]

A guy I work with is replacing the engine in his grain truck. The old engine runs but was weak - he said it is a 409. What differences are there between these engines and the ones in cars? What is a fair price to ask for it? We're going to try and sell it locally.

Thanks,

Derek

 

[CDNpontiac409guy]

Old worn "runner" ? ....
$400 - $700

 

[bobs409]

From our FAQ page:

They share alot of the same parts like crank and rods but the heads and block are different. The blocks have a cut out area in each cylinder that helps lowers the compression to 7.75:1 The notch in the block is not responsible for all the compression loss however. The truck head (333) has a larger combustion chamber and the shorter truck pistons are responsible for the largest amount of the compression loss. On a positive note, the notch in the block also allows more room around the exhaust valve thereby enhancing the air flow.