I'm about to start my engine for the first time. What type and weight motor oil is best to use once it is past the 20 minute break in? Here are my engine specs.

440ci
Bored .40 over
Closed chambered heads ported and polished
2.14/1.81 valves, hardened seats
Harland Sharp roller rockers
Comp Cam XE 274 cam and lifters
LY rods
Keith Black Hyperutectic pistons
Forged crank
Clevite bearings
Factory mains
ARP head, main and rod bolts
Double roller timing chain
Edelbrock RPM intake
Holley Street Avenger 770 vacuum secondary
TTi 1 7/8" headers
2.5" mandrel bent exhaust to stock tips
Turbo mufflers
H pipe
mini starter

Thanks!


I’m listening.