castrol now makes a 0w-30 thats not made in germany and is like the rest of their synthetic oils.. hydrocracked dino oil... it says made in USA on the back
will be similar the sbc and bbcs.. remove the cam caps and cam (different) then just remove the keeper and valve spring then.. I used compressed air into the cyl from my compressor to keep the valve from falling in the engine.. worked great..
I would get valve springs, Stock springs wont hold up to a good lift @ 7500+
Crower 272 small cores have a very small lift .344 so hardly affect the springs (hell stock 2jz cams have .346 lift).. The crower 268s and 276s have much higher lift.. .400+ iirc
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