set engine at tdc compression at cyl 1. adjust valves 1,2,3,5,7,9. rotate engine to tdc compression cyl. 8 adjust valves 4,6,8,10,11,12. with 1 being at the front of the engine. an easy way to see what cyl is on compression is once you get cyl 1 at tdc if valve 6 is compressed that means cyl 1 is on compression. and if valve 7 is compressed then you are at compression on cyl 6. cyls 1 and 6 are companion cylinders so they will both be up at tdc it will just depend on which is on compression. i cant remember the spec though. i just did a 4640 and intake was 18 and i think exhaust was 24 or 25 i cant remember. hopefully someone else here will know
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