Exhaust Ports are massive vs.TW’s, don’t appear ported. If prop
Can anyone tell me what kind of heads these are?
At First i’d thought these to be older TrickFlow HighPorts, very similar Exhaust surfaces & casting radii around Plugs, but they didn’t have dual bolt patterns on Exhaust ports. Zoomed, the 2nd pattern is partially visible below front & rear port Header bolt holes.
Somebody may have plugwelded them, Aluminum Epoxy, etc. If no numeric markings exist, level the Intake surface plane & fill an Intake port with Water with a graduated dropper (CC’s), do the same w/Plexie siliconed flat over a Chamber, hole in center- level plane.
Those #’s, Valve diameters, Pic’s of one Head’s end, 1 of Intake Ports, 1 of bottom of Head will make it relatively easy to ID these with certainty. Even pics would help for now.
Below are 2 Pics... 1 of a High-port Head, other- your Pic enhanced showing a broken Spring, noted while searching for ID.
TY -John.