L72 Trip to machine shop

shor · #1 06-08-2002, 11:46 PM

Here are some more photos after coming out of the hot tank.
There is a clearly visible (MA) crayon mark on the block. The (A) doesn't have a slash on it though and I think that maybe it should be an (N) because my car is an MN code?? Have you guys seen this before? I have not read about it in Ed's book nor Mcneish's. Is this a known marking or did I just discover it?
l72 bare block/crayon

T Billigen · #2 06-08-2002, 11:55 PM

Shor, where is the chalked MN located on the block? Can you get a picture of your vin number on the pad by the oil filter, I want to see if it similar to mine.

**Stefano** · #3 06-09-2002, 04:36 AM

Shor,
It looked like MN to me the first time I looked at your pictures. But, that is what I would expect it to read, so my eyes might be playing a trick on me.

There aren't to many original drive train Yenkos or COPOs left. Even fewer of those remaining which have never had their drive trains apart.(Or even out of the car.)

Your find is certainly new info. to me. I am curious as to what our resident Restorers and Members have experienced.

I can still remember a few years back when Dana Mecum first exhibited this rare find and numerous local "experts" were scrutinizing your Camaro.

The 'Bloomington Gold' Corvette Guys were satisfied with the originality and Correctness of the Castings and stampings but were completely thrown off by the dates and time line.

Many couldn't understand how a bock was cast in January, Pad stamped in March and united with a Body trim tagged in May.

**YENKO DEUCE REGISTRY** · #4 06-10-2002, 01:46 PM

Shor;
Two '70 Yenko Novas have been found with the engine application code written on both sides of the block, in yellow, upside down!
M

**TimG** · #5 06-10-2002, 02:03 PM

The engine code designation was marked on the block to aid the builders and stampers. They used this code to as a guide to assemble and stamp the blocks. I have a 16,000 mile 65 Corvette that clearly has the engine designation on both sides of the block by where the mounts are. You can read them through the exhaust manifolds.

shor · #6 06-11-2002, 01:58 AM

Neat stuff, it's like going back in time, thanks for the responses.

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