IIRC They upgraded the pump in 97 to a high volume pump because of the oil squirters in the 506 engines, that weren't in older 6.5s. 96 was a change over year. some trucks got 506 blocks, some got older version without high volume pump & squirters. You could try changing out the pump to the proper year for your engine (99). Hope it helps. Also normal pressure for oil squirter blocks runs lower than earlier blocks. Normal pressure when warm, is around 20 at idle, 40-50 at cruise RPM.
I hope you fully primed the lube system before starting up the new engine. If not, your cam bearings are most likely toast.
The beauty of the Second Amendment is that it will not be needed until they try to take it
If Americans ever allow banks to control their currency. First by deflation then inflation. The banks will deprive the people of all property. Until their children wake up homeless.
1998 GMC K1500 WT, 6.5 TD. 80,000 miles. Auto, 3.73 gears. Remote PMD mounted on the radiator support. KOJO tune WOW! Carter HD lift pump. Feed the beast, GM8 turbo with Hurricane impeller. K&N filter. Ported, gasket matched upper intake. Leroy's braded stainless steel oil lines.
New Bosch injectors. Flow matched 2200 lbs pop
3 1/2" custom Aero turbine exhaust. Nutered Cat
2" Lift RS5000 Shocks. 285 X 17 Bridgestone AT summer tires. 12.50 x 33 x 15 Procomp MTs winter. Powertrax No slip locker in rear.
Last edited by Tommygunner; 08-11-2019 at 10:58 AM.