not 461 double humps they a 462 i look at them agin

[jessie355]

they are double humps casting numbers are 3890462 on both heads look to have the 194 150 valves also think they are 64 cc and im having them shaved. these should do just fine on my 40 over 350 with -5cc flat tops edelbrock preformer rpm intake 750 holley with stock rods and crank with a 3/4 cam from crain and also am haveing to have accesery holes drilled and have them tapped for screw in studs for the roller rockers im goin to invest in. does any one know what to expect from this set up and im running a 2100 stall and a street fire igniton system. these heads also dont have the standered 5/8 spark plug they a re 13/16

 

[bowtie81]

my buddy runs a set of heads like those but his are 041 casting and he runs 12.03 with his. So you can get some good numbers with those heads.