Cummins Big Cam 855 Lockplate Tightening Sequence Discrepancy

So upon reaserching for the main bearing replacement I'm looking to preform, the old shop wizard scanned me his 855 shop manual. According to the manual the proper sequence is:

Tighten to 145-155FT-LBS
Continue to Tighten to 300-310FT-LBS
Loosen 3 Turns
Retighten to 140-145FT-LBS
Tighten both cap screws on each cap alternatively an evenly to 300-310FT-LBS



However over on scribed I found different instructions:
My engine is a Gen Four according to the serial number which indicates it was manufactured in '89 (what I believe is) the last year before they quite production on the 855 and moved onto the N14 Red Top. The Pete was manufactured sometime in 11/'89.

 

Hey bud, I accidentally hit the send button before finishing the whole post. Could you tell me your thoughts on the info I added?

 

Low flow motor? Sorry I have to admit my biggest fixes before this where replacing the head gasket on a Triton 4.6L V8, Hydraulic Brake lines and ball joints on an 03 F150. I've never heard that term before.

And here's pics of the motor


Also serial number for the Big Cam according to Peterbilt is: 11504100

(Sorry it took so long to get the pics I had to fight off the mothman)

 

Hang on let me go out and check again

 

About an inch on the house coming from the radiator