Should have 18-24psi at idle, 28-36 at 2000 rpm with no load. If you haven't, I'd replace the lift pump. Spring or diaphram may be shot. Maybe even one for a P-pumped 12v. Flows more fuel, and a better pump. Can be had from a Case-IH dealer for ~$100, including the 2 gaskets.
I'm not up on the VE pump settings, so I can't help there, sorry. I don't know if even the PODs will be big enough for twins. A bigger single, but maybe not the twins. A small set of PDR twins (HX35/HT3B) is for trucks running 450-550hp. BD
Super B twins, up to 575hp.
I don't think you are there yet.
Is that C6 built up? IIRC, they don't have a locking torque convertor. That will really hurt trying to load the engine to build boost. A built 47RH would be a better choice. Don't even need the PCM. Just use to switches on the dash to control the lockup and O/D.
On the timing, don't use the pin. They aren't always in the right spot. Use the drop valve method to find true TDC.
First, get the engine in roughly TDC with the rocker arms (both loose on #1). Put a mark on the timing case cover with a white paint marker. Loosen a jamb nut on either valve on the #1 cylinder. Turn the screw in about 5 turns, and lock the screw. Carefully rotate the engine one way 'til you contact the piston, and mark a line on the balancer in line with the mark on the case. Then rotate the engine the other way til you touch the piston, and mark another line on the balancer in line with the one on the case. Now, draw a line directly in the middle of the 2 marks. That center line is TDC #1 compression.
DON'T FORGET TO BACK THE ADJUSTING SCREW BACK TO ITS CORRECT PLACE TO PREVENT ENGINE DAMAGE!
Sounds a bit intimidating at first, but not a problem. Just turn the engine slowly. Did that on mine.
IIRC, Snap-on has a special wrench for the other pump bolts.
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'93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE
Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd.
Traded off- '97 3500 C/C, 4x4, CTD
'92 W250, LE, CC, CTD w/ tweaked pump
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