My 250 head had a 1.9" intake & 1.6" exhaust valves, mild bowl porting, chambers untouched.

My 194 head had 1.88" intake & 1.6" exhaust valves minor bowl porting & chambers untouched.

My cranking compression was 150-160 psi w/the 9:1 250 head & 220-230 PSi cranking compression w/the 194 head.

The 194 head was shaved quit a bit.

Both heads were similar in porting but the 250 head had a little bit larger intake valve.

With having 220-230 cranking compression w/the 194 head, the low end torque was very apparent (over the 250 head), & was a real stump puller.

The heads were swapped onto the same short block. Back to back.

I might be able to flow test the 194 head, I am sure it did not flow well @ all, never did I use lump ports.

MBHD

12 port SDS EFI