[TommyGunn]

Originally Posted by OG68

Anything related to the car body from the firewall/dash back will be found in the Fisher Body manual for your model year.
Any electrical items installed during the body build such as power windows or seats will be found in the FB manual.
The FB manual covers all GM models since the bodies are basically the same between makes.

The service manual covers everything else.

Thanks!

[johnta1]

Original heads?

The gap should be .060" but I don't think I ever gapped them that much.
I'd start at .045" and see what it does.
That's if the plugs are not gapped bigger to begin with.
AC Plugs are R45TSX? (X is for extended gap I believe)

[TommyGunn]

Originally Posted by johnta1

Original heads?

The gap should be .060" but I don't think I ever gapped them that much.
I'd start at .045" and see what it does.
That's if the plugs are not gapped bigger to begin with.
AC Plugs are R45TSX? (X is for extended gap I believe)

Thanks. Yes original heads