SCS HB5 head

[HERB]

I have a set of SCS HB5 cylinder heads- circa 1984- on my car and I'm trying to find some info on them regarding flow figures. Any ideas out there? These are a large oval port welded head, valve size 40 x 35.

[HERB]

Well what I'm doing is going through the engine after having it for 32 years, and I plan on improving the performance by upgrading to a new, larger valve head. I just want to make sure that the heads I get will actually be a step up in performance.

[Martin S.]

Can you post some pics of the old heads, or is the motor still together?
I'm wondering what has changed in the last few decades with heads.
Big valve heads are much cheaper now and hemi and semi-hemi chambers seem to be a thing of the past.
What about porting, any new ideas in the past few years besides CNC? Do flow benches still work the same, and cost the same to use?

[HERB]

The engine is still together, so I'll have to dig up some old pics of the heads and scan them.

[HERB]

They kind of look like a Berg 870 head, in fact the intake gasket is virtually identical.