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Searches of old posts here and on zcar.com should give enough info to tell you which head to look for. Briefly...

E3100 heads were used in 70 and 71. If unmodified the compression will be about 9.5:1 on 70 through 72 blocks and nearer 10:1 on 73 blocks because the piston crowns were .030" higher in 73. Their weakness is a tendency to miss and raise HC emissions at idle, so they often have trouble passing emissions tests.

E8800 heads were used on 72's to fix the miss at idle problem. Compression was also lowered to allow use of 91 RON regular gas.

E8800-SV heads came on 73 240's. Combustion chambers were a bit larger and piston crowns raised to give the same compression as 72's.

Thank You guys for the input.

Kcoke... The head you have is in good shape? I know 15 years is a lot of time. If the head is in good shape how much do You ask for it.

Of course need to be rebuilt if not wrong but this is part of the game.

Thank You,

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