OMC 460 rebuild advice
I have been reading on the forums a lot and some of my questions have been answered but still some are left open...
I have a pair of 1988 OMC 460 KC's (with the flat top forged TRW pistons) in my CC stinger 312 with 350hrs on them, I’m pulling them for the 3rd time out because finally I have the cash needed to rebuild them, so far I have rebuild the original carbs (holley 4160 750cfm), fitted weiand stealth intakes and made 4" trough the hull exhausts paired with the alu hardin marine manifolds. From what I have red in on the forum is to deck the engine block to 10.300” and port the D3ve heads, the question that remains is what cam and pistons I should buy knowing that I will have to bore the engine.(pitting in cyl. 7)
This is what I had in mind but I don’t know if it is all correct, and please correct me if I am wrong as don’t have any experience in rebuilding a marine 460 and this is a big expense for me :s
rebuild rotating assembly
Keith Black KB Performance Piston and Ring Kits KB137KTM-030
Deck engine to 10.300”
Port D3VE heads
Xtreme Marine™, XM262H
billet Petronix marine distributor
New Roller timing set 72’ – 87’
New fuelpump + regulator and oil pump
Overall I am looking for a good reliable engine that performs well (+-400hp), I am hoping to achieve 60mph+ with the boat after the engines have been rebuild, mind that I live in Belgium and that I am using octane 95 minimum, sometimes also 98 😊
Thanks in advance for your replies !