340Help!!

calgee said

So I think I am going to pull the motor this week and get to work. In your opinion(s) will it need an entire rebuild? Should I order the 600 or 650 carb? Any recommendations for camshaft? When you say trash in the motor, crankshaft,rods,pistons,cylinders etc will all need attention? Thanks again for everyones input. I just dont want to make the same mistake twice!

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Yep, as SG said you have to clean it super good so unfortunately it'll need to come completely apart and be hot tanked cause when a cam goes it generally sends small metal particles all throughout the entire engine and you can't get them cleaned out of the oil galley's without hot tanking. And when you get it back from hot tanking scrub the heck out of it with a set of engine cleaning round wire brushes (you can get a set at Summit or Jegs) and soapy water and as soon as your done blow it out real good with compressed air to dry it good and oil it so it doesn't rust. They'll rust in a matter of minutes. You can scrub everything else up with soapy water or pay the machine shop to hot tank it all. Inspect the pistons closely to see if metal particles have been imbedded in them. If so they'll need replaced. SG's right that either a 600 or 650 is fine. I've ran Lunati cams, Racer Brown cams, and Ultradyne's with real good success. Most any of those are ground to take advantage of Mopar's larger diameter lifter and will make more power. Lately I've been calling Jim @ Racer brown cams and having them custom ground and they have all worked great. If you don't want to change anything else keep it about the size (duration) that's in your engine now but pay attention to the lift cause if your heads haven't had the valve guides trimmed down they won't take much more than .450~,475 lift without interference.