340 with edelbrock heads overheating

Rat Bastid said
Just use the 1008’s. With those pistons you can use the compression

Torque them down in a 3 step progression, using the recommended bolt tightening sequence.

Also put engine oil on the head bolts and their threads to achieve the proper torque specs.

The Edelbrock .050 will give you a little more sealing protection being the 1008 gaskets leaked before.

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