As the title states I want to rebuild my "90" C1500 5.7. I'm not looking for high performance. I just want a nice clean running engine with a possible boost in mileage. What I propose to do.

Replace flat tappet cam with a roller cam (stock vortec or somebody suggested an L98 cam?????)

Roller rockers (not high on the priority list)

Flat top pistons

Clean up the stock swirl port heads by removing all the sharp edges and boogers in the intake and exhaust ports and combustion chamber. (already done when I replaced the head gaskets and cracked head)

Bump the oil pressure "somewhat" Would like to run 40+ PSI at cruse speed.

That really is about it. I'm really looking to increase mileage if possible and any HP gain is icing on the cake. As i mentioned, if somebody has done something similar and has a chip burned to match something close to this I see no need to reinvent the wheel. I have a blank slate to work with as I still have the running but tired engine in my truck now.

Thank you in advance for your advice.

Ken