NEW TURBO

[OLDEARL93]

INSTALLED MY NEW H35 AND NICE DIFFERENCE AS TO SPOOLING ,EG ARE JUST A BIT HIGHER BUT NO PROBLEM, WHAT I WANTED TO KNOW IS IF ONE HAD TOP END PROBLEMS ,WELL I SHOULDNT SAY PROBLEM BUT MORE LIKE AROUND 2100 RPMS IT GOES FLAT , MY QUESTION IS DO I NEED TO UPGRADE TO A 3200 RPM SPRING , AND IS THERE PROBLEMS WITH THE VALVE TRAIN WITH THE EXTRA RPMS, AFTER ALL THE ENGINE WAS DESIGNED TO GOVERN AT 2400 RPMS, ANY IDEAS , THANKS

[oldschooldodge]

The 3200 RPM Gov. Spring(aka 366 spring) is a must have in any 1st gen. It's not that hard to install, and is a good cheap upgrade. Your valve train will not be in any kind of danger at 3200 RPM's. If I remember correctly, you don't have to worry about getting valve springs unless you are turning anything above 4000 RPM's.

[dpuckett]

Valves get a little light at 34-3500, and start to float with stock springs.

If you are having higher RPM problems, check a few things first:

Valve adjustment. If it's been 25K or more, it's time well spent. Even if they are in spec, it's worth knowing they are right.

Fuel supply to the pump, and lift pump pressure. I have NEVER had a good stock fuel system defuel at less than about 27-2800rpm. If your lift pump is getting tired, or is an AirTex, it could be failing to meet the spec of 5psi at idle and 3psi at WOT full load.

Throttle linkage and full travel of the throttle lever. Over time, the cheap plastic ball end caps wear and allow slack in the "system" so to speak. If your throttle rod moves more than about 1/4" before the pump throttle lever moves, bust the jambnuts loose and tighten that thing up.

Your injector pump could be in need of new springs and seals. Even though it runs, could it be better? Most likely if it is all original, yes.

Daniel