3946074 modified

[HMFDUCK]

Ok , I have a set of the GM alum hds from 69 / 3946074.They were modified by AFR back in an or around 69-70ish, according to AFRs rep I spoke with. They have round exh ports with a "shark fin" on the bottom side an a "V" shape down an around the valve stem to the exh valve itself. They also have 2.30 int/ 1.88 exh. with a Holley strip dom. intake to match, they are a match set. Plus they are 112.8cc. Each valve an combustion chamber is stamped for a particular cylinder.Both the heads an intake have been massaged nicely an the flow numbers are even better.I am curious if anyone has seen a set similar to this. The rep from AFR remebers prepping heads like this for his father when he was in high school.He told me they would do this kind of work for the Pro Stock boys back in the day.I last time I had them on my 468bbc an it was a torque monster, pullin the wheels on my all steel 79 Malibu to a 11.5 117mph 1.6 60' time , at Bandimere.Any input would be great.Im not sure what to do with them at this point? The Malibu just doesnt seem the place for them, but boy do they "work" !