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If you can find them the 292 truck engines work well. Everything bolts right up but they're just a little taller. I built one for a friend years ago to put in a really nice older Searay that had the 250 six. He wanted a little more power but didn't want to hack up the engine cover. Used some...

To check for EGR cooler leaking, remove the EGR valve and raise the rear of the truck. You usually can see coolant in the EGR valve area if the cooler is leaking. Coolers have a pretty high failure rate.

I thought I read somewhere that the staggered jetting was also used to help offset the PCV being plumbed into the intake.

Thanks Dude, I love Merlins and Allisons are OK to. Back on track, I thought Sterling wound up with the Torque stuff. I realize their V12 wasn't I guess cost effective or maybe over engineered but I give them a lot of credit for trying something different.

And until you've heard a big Merlin run flat out, you can't really call yourself a motorhead... :sifone: My shop is located near a small airport where there is an air museum. A guy flies a P51D out of there. When he makes a fast pass over the building you can hear the supercharger whine and...

About your oil leak, -8 SAE (45 degree) and -8 JIC (37 degree) are the same diameter and thread pitch. It's normal practice to use combinations of these fittings together on lower pressure applications such as engine oil. I think the difference in degree may help seal, however you lose surface...