Pumping a 237 to a 300

[RZX]

I would like to get some opinions on pumping my 74 RD from a 237 to a 300. The guy that does some work for me says he can do that by changing the injector pump and adding the 300 air cleaner system. He said he has done a lot of them and wants about $ 4000.00 to do this. This change will use more fuel

but will it harm the engine ? Thanks RZX

[2stacksuperdog]

If its the origional engine if ir ember rigfht those motoers can not handle that power. The later ones could be tweaked but not that much from what i understand.

[Superdog]

it ain't worth $4k for no more hp you are going to gain in my opinion.

[b61mack]

The early 237s didn't have the heavier rods that the 285-300s had, the early 237 blocks might not hold up like the 300s do also. like Mike said its not worth 4 grand. im pretty sure I have seen 300s and 350s cheaper than that awhile back on here in the classifieds

[theakerstwo]

And to add what has been stated the main brg caps need the struts installed from the cabs to the block. This will help the bottom end.4000.00 is too much cause he is only going bto recalubrated the pump and injectors.And what he said about the rods.

[RZX]

Thanks guys, I think I'll look for a 300 or 350 instead. Would there be a problem putting one of these in front of a 5 speed with a low hole tranny ? RZX

[57 bcr]

As long as the the 300 is a Maxidyne (not just an E6-300,but an EM6-300 or ENDT676).Any of the 350's were always a Econodyne or conventional torque rise engine,which won't be a good match for the 5 speed, as you'll be lugging the snot out of it.Lugging is saved for the Maxidyne!

[bullhusk]

I would look around for a tractor (300maxi) thats got a bad cab or frame an use the whole truck as a donor this way u have all the stuff u need and is cheaper in the long run! They are still out there for less then 4k just gotta look

BULLHUSK