Smokey Yunick NOS 67 Z-28 MO 302

[iluv69s]

on other head...can anyone decifer these?? what are the correct part numbers for the 67 Z pistons and cam? Thanks

[iluv69s]

interesting...original GM plug wires date 1965??

[iluv69s]

removed intake...I expected it may be ugly inside...buit it looked pristine still..with assembly lube still intact...

[iluv69s]

At this point, I'm not sue what more to do. Should I tear the motor apart and check every little thing? Maybe just a quick check and trust Smokeys expertise?? Suggestions please!!

Thanks, max

[wwchevy]

Just my opinion, but Smokey "freakin'" Yunick built the engine, if you can't trust Smokey, who can you trust???
I can hear it now on a Saturday night- Q: " Who built your engine? A: "Some guy named Smokey"
That engine is awesome and valuable, Congratulations on an incredible piece iron.

[njsteve]

[ QUOTE ]
At this point, I'm not sue what more to do. Should I tear the motor apart and check every little thing? Maybe just a quick check and trust Smokeys expertise?? Suggestions please!!

Thanks, max

[/ QUOTE ]

If it has been sitting for any length of time absolutely take it apart and check things. Then replace all the gaskets. Regasketing and checking internal clearances doesn't somehow "undo" Smokey's building of the engine but you can be darn sure that not checking the internals and then wiping a bearing or ruining the cam or crank would really undo Smokey's building of the engine.

You have nothing to lose and everything to gain (peace of mind) by checking things now, otherwise you're going to be wondering forever if you should have done it.

[firstgenaddict]

[ QUOTE ]
[ QUOTE ]
At this point, I'm not sue what more to do. Should I tear the motor apart and check every little thing? Maybe just a quick check and trust Smokeys expertise?? Suggestions please!!

Thanks, max

[/ QUOTE ]

If it has been sitting for any length of time absolutely take it apart and check things. Then replace all the gaskets. Regasketing and checking internal clearances doesn't somehow "undo" Smokey's building of the engine but you can be darn sure that not checking the internals and then wiping a bearing or ruining the cam or crank would really undo Smokey's building of the engine.

You have nothing to lose and everything to gain (peace of mind) by checking things now, otherwise you're going to be wondering forever if you should have done it.

[/ QUOTE ]


I second Steve's suggestion... It would suck big time to have had a minor problem which turns into a nightmare.

[NCGuy68]

Some quality time on a engine dyno before installing in a car can unmask potential problems down the road. Well worth the effort IMO.

[iluv69s]

[ QUOTE ]
on other head...can anyone decifer these?? what are the correct part numbers for the 67 Z pistons and cam? Thanks

[/ QUOTE ]

upon inspection in person looks like it says
"pistons 3917624"
"cam 3849347"

some of the numbers are a guess, but that seems close...

Does anyone know the correct published GM part numbers for the pistons and cam on the 67 Z-28s?

Thanks....

[juliosz]

You may want to check to see if it has the stock bore. I bought a set of .020 over 302 pistons from a friend that he got at Smokey's garage sale (he bought several sets). The set I bought has stock size ring lands but he also had a few sets that had really thin ring lands. I can't remember the GM part number but it was stamped into the dome of each piston. I would vote for at least disassembling and checking that everything is ok.