Thread: Mystery heads

Tweet

I recently purchased a set of sbc heads that I was told were darts. Upon getting them home and further inspection I've noticed there a are no casting numbers or branding on them anywhere. The ends are cast like a 305 head but they are angle plug heads and as far as I've read there were never any 305 angle plug heads. With that being said they do have 2.02 valves, poly locks, guide plates, screw in studs and are ported and polished. Anybody have any input or idea what these heads actually are?

could be any ones heads .there is a very long list of head companys i know what some look like by sight so with no numbers ? who the hell knows?? photos more then one would help ...alot

hard to tell any casting numbers under rockers . engine quest /protop lines . very old world or dart s . do not think there darts if so very old

Thanks for the reply. I guess it really doesn't matter what they are. I believe they will serve their purpose. They are dirt track street stock bound.

They look like production heads. Give us the casting number that's on the heads, in between the valve springs.

Originally Posted by techinspector1

They look like production heads. Give us the casting number that's on the heads, in between the valve springs.

Look at his first post - "there a are no casting numbers or branding on them anywhere".

Originally Posted by IC2

Look at his first post - "there a are no casting numbers or branding on them anywhere".

there not a Gm production head. the under side of intake runner and the added casting parting line on the ex side would not be Gm and added boss round the intake ports do not add up as a stock Gm casting or is that step O.D around the vavle springs or the in side shape of rocker valley of head . more i look at it the more it could be a World head it may or may not have a W cast inside by rocker boss s that and the fact it,s angle plug head i know Gm did sell a bow tie head in iron but i thinking it is a world or top pro line . casting shape is new looking and mounting points to be a old Gm angle plug head. i done and looked at alot of chevy small block heads .not a production head that i have ever seen . if you can tell me if it has bronze valve guides in the heads that could help narrow it down

. Are you sure they're 2.02"/1.60" valves? Space between the valves looks a little big... unless they have modified valve spacing...

look like gm over counter 370 replacement head 64cc 165 runner 350 hp head