really cool 70 Z28..simply the best.

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**Hotrodpaul** · #1 04-15-2009, 06:03 AM

Charlie, great site! This will be a big help as I restore my 70 LA built Z-28. If you get a chance, can you post dimensions of the original stripes using a tape measure much the same way the assembly manual shows, for others that want correct stripes on their 70 LA built Z-28's.

Thanks, Paul

Chateau Slate 66 · #2 04-15-2009, 06:08 AM

I just spoke to an engine builder last weekend that swears by Comp Cams oil additive to make up for the lost ingredients in most of today's oils. (i.e. Zinc, etc.)

link to product info

HPMIKE · #3 04-15-2009, 10:34 AM

[ QUOTE ]
I just spoke to an engine builder last weekend that swears by Comp Cams oil additive to make up for the lost ingredients in most of today's oils. (i.e. Zinc, etc.)

link to product info

[/ QUOTE ]

I would not use the sybthetic oil at all. Most modern synthetics have no additives that are necessary for older engines with flat tappet cams as they were primarily designed for moderm engines with roller valvetrains and such. You want an oil with good "cling". I would recommend Valvoline VR1 race oil and a bottle of Comp additive. Fortunately, in this case you are dealing with a car that even though it's relatively old, the valve spring pressures are modest and the parts are already mated. I guess one area that could be a potential hazard is if a lifter stuck in the bore and failed to rotate. That would flatten the cam in no time.

MB

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