I have a 350 with oem heads and the only thing I know about those heads is the number. It is 3970126, and I also found the number 0310. Any info will be apreciated. Thanks in advange, Nonni

I found out in a small block book that those heads where used on 327-350 in 1967-1970.

1) Does anybody know the chamber size?

2) What valve size?

3)What compression ratio will those heads give me with dished ore flat top pistons?

Thanks in advange,

Nonni

1.94Intake 1.5Exhaust....couldn't find any info on the combustion chamber though. Hope this helps

Dan

I'm fairley sure these heads are 68cc as they came on 9.0 cr engines the 327s were 235hp and 350s were 255hp

Thank you for those info, I hope you both are right. If those heads have 1.94/1.5 valves and 68cc then I am very happy

Are those heads very rare? I haven´t had much luck finding info about them. Most say it has 1.94/1.5 valves, one said it has 1.71/1.5 (I think my L69 has bigger valves than that) but nobody is sure about the chamber size. I sure hope somebody can find out for me cause I am lost.

This engine is going to go into my T/A and if those heads are 1.94/1.5 and 68cc then I am going to use them. If they are 1.71/1.5 and 76cc then I am not sure.

Thanks

Nonni

You can always measure the valves to be sure.

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club