360 Aftermarket Heads on 318

Mopar Millenial said
I got a dumb question… say I get some flow numbers on whatever heads I end up with, 360 aluminum, ported 318… etc. what would getting a less aggressive cam actually do. I mean sure it’ll raise manifold vacuum since the one I have now only gets 10-12.

It may, it may not.

Mopar Millenial said
It’ll idle smoother sure, sound probably smoother and less choppy.

Not really. Both above quotes depend on how the cam is ground.

Mopar Millenial said
But what’s the benefit? Better mileage? Would I get better drivability?

Probable mileage gains. Possible better drivability. Depends on how the cam is ground.

Mopar Millenial said
I mean I’ve taken it 30 minutes down the road didn’t seem to be any different. Just wondering in a practical sense.

The main thing about the cam is where it performs in. This is dictated by the duration. What rpm do you want the car to perform in?

The cams lobe separation angle is often put on a 110. Going numerically lower adds a rougher idle and lowers vacuum. BUT it adds low end torque and normally peaks sooner.

Just the reverse going to a 112 or greater. Idle smooths out and you loose a lot of torque. Not just on the low end but normally through out the curve.

The Edelbrock cam is designed to be a no complaint driver cam. Best used in automatic transmission cars. The cam has a low lift and takes very little advantage of there cylinder head.