Worse combustion chamber design ever? Saveable?

thesiren74 said
Ford?

Yes, and these are original to a so called 'HO' motor with factory flat tops, roller cam, and 4bbl. Saaaaad.

Garrett Ellison said
I can see from here why everyone who builds sb fords slings the heads and gets something aftermarket now....

Yep. They are all pretty much garbage. Sad to see a stock 4" bore and 3" stroke motor stop making power at 4200 rpms.

toolmanmike said
Probably a pretty efficient head for a stock application.

I agree with that. If you like to shift at 4500

Demonracer said
That's about all they are good for "stock" application.

They weren't even good for that.

toolmanmike said
But not much different than most performance heads. Here's a Edelbrock.

View attachment 1715670554

View attachment 1715670555

Their combustion chambers are pretty similar. Hmm, gives me something to go off of. Maybe I'll grind 10-20 lbs of iron off of each head. :p

yellow rose said
It may not be as bad as you think. Pressure recovery (educing exit loss) is a big deal, and blowing out the chamber wall out can kill it.

Move the chamber wall .040 and send it. If you do that and it kills some flow, who cares? Flow isn’t everything when all you do is look at bulk flow through the port.

I think I may try. I'm going to try my handy work on one chamber when I have some time and post a pic. The valves are exceptionally small at 1.78/1.45. definately not worth changing that I wouldn't think.