302s on 72 340

Infecteddog said

The 1.78 intake closed chamber 318 head they advertised as less HP than 1.88 valve smog head cop car motors? Or the 308- the 1.88 intake open chamber swirl port head they sold as the dream child from its introduction in '89 until after the Magnum's introduction?

Seems odd they'd claim a head rated below the 596s were a HP gain over 2.02 X heads.

Click to expand...

It's all relative right?

It's all (relatively speaking LOL) about port velocity or air speed. A large port is a dog, until you get some RPM aka air speed through the port.

A small port, has velocity or good air speed RIGHT NOW! but will choke sooner preventing it from revving any higher at that point.

He's not trying to turn it 7000 rpm and 4.56 gears to get it out of the hole
He is looking for a max of 5000 rpm with 323 gears........

Although it sound miss matched at first. I thing its the perfect match. And a little extra fuel economy to boot!:thumblef::thumbrig: