Stop in for a cup of coffee

WV64Signet said

Thanks Tim.. I'll hit you in a PM on that.

I was wondering if there is a difference between the flex plate on a 64 - 65 block and the 66 and up LA?

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The A engines and the LA engines up to 1971 were all internally balanced. Except in some rare industrial applications. The 318 LA never got externally balanced for so reason. Even when it’s bigger brothers went that way. The 273 was internally balanced. So the flex plates shouldn’t be an issue from 65 to 66