89 OMC King Cobra

[imported_Nathan_]

I just bought a boat with a 89 OMC KING COBRA, And I'm looking for info on this motor. I do know my stuff about small block chevys but now I'm trying to find out what OMC has here. Any ideas on preformance upgrades ? I was thinking about building a 383 stroker.. <br /><br />Where do I go to get specs on the motor ? Compression, cam specs, ect.......<br /><br />Thank you ... <br />PS: 89 Beretta Phaser 230

 

[Mod2]

Re: 89 OMC King Cobra

Moving to I/O forum.

 

[rodbolt]

Re: 89 OMC King Cobra

hello<br /> you may try telling us what motor you have now. OMC used quite a bit of 460 fords in those years. as far as building a stroker hodrod motor save your money for a new 8.1L. <br /> good luck and keep posting

 

[Lou C]

Re: 89 OMC King Cobra

You can still get the original OMC shop manuals from Evinrude/Johnson dealers, they are better than aftermarket and about the same price. Start there...<br />BTW, I have heard that they had trouble keeping the dog clutch Cobras together with the big blocks, so you might want to leave well enough alone!

 

[imported_Nathan_]

Re: 89 OMC King Cobra

Oops..... it's a 5.7

 

[imported_Nathan_]

Re: 89 OMC King Cobra

What do you think abou the 1.6 Roller Rockers on this motor ? I'm also playing it the idea of a better intake and carb. combo.. Any thoughts on this ?<br /><br />Nathan

 

[Lark40]

Re: 89 OMC King Cobra

I would suggest that you spend some time in the water with your new boat and get ideas about how much faster you need it to be.<br /><br />Certainly the 350 engine has a universe of aftermarket (including marine) stuff to make it faster. But, you should learn what you have, including the sometimes problematic King Cobra, before planning major investments.