Thread: 402 needs more power (heads & cam)

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Techinstructor, why is this info needed? Because I don't really want to tear down my engine and then put the same heads back on the block. Respectively I can remove them next autumn/winter, check all you need and then order the new heads and install them.
Which exactly are the needed information to choose new heads?
Piston and block casting? Something else?

I bought the engine from rockauto and it might be a marshall engine. Will take a look tomorrow if I have some specification from the manufacturer. I think there are the stock pistons in it.
When a block is honed, must there be bigger pistons or could you reuse the original ones?

Yes so when I need to decide between porting my heads for 2000$ or buy new heads for 2500$ I prefer the new lighter ones.
Or if I could take the 3964290 with 101cc closed chamber without modification (except valve springs) this would also be an option. But I think aluminium heads would give more hp.

I'll let you know that English isn't my native language, so sometimes I don't understand everything. So that's why I ask some questions twice

Tim