1972 Replacement LS6 - Page 2

**SuperNovaSS** · #11 01-29-2012, 10:44 PM

OK, for those interested I got the engine home today and popped the heads off. Sure enough, a open chamber head on one side and a closed chamber on the other. The heads are pretty closely dated for a marine engine and it may have been a factory goof. I'm not sure. Funny thing is, the boat was supposed to run well.

Jason

**SuperNovaSS** · #12 01-29-2012, 10:44 PM

**SuperNovaSS** · #13 01-29-2012, 10:45 PM

**69SSZL1** · #14 01-30-2012, 12:25 AM

I would think the difference in compression would cause a vibration or off-balance?
What letter is stamped on the rockers?
What cam is in it?

**SuperNovaSS** · #15 01-30-2012, 01:47 AM

I have not checked the cam. The rockers are "H".

Jason

**69SSZL1** · #16 01-30-2012, 02:43 AM

I would have thought they would be "L" or "M" long slot. "H" is the ZL-1 and L-88 extra long slot. Good Rockers. I wonder if it has the 3863143 cam or the 3904362 cam.

**SuperNovaSS** · #17 01-30-2012, 03:58 AM

If I tear it down far enough to see in cam numbers I will let you know.

Jason

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