my heads are of a 302 not sure what year i see ford stamped on them then a number 7817 or7b17 .then cp. 447.AND 15

 

Flip them over and read the number near the intake ports..

 

i would but the intake and heads are alredy on and i dont want to have to buy more gaskets they look like e7s to me but there stud mount rockers and the exzaust valves look smaller maby gt40 p .any other way to id them .thanks

 

all i can see is C9

 

where are you looking........

 

under the valve cover

 

Is there a capital letter stamped into the head at a front corner near the valve cover surface? It sounds like you have some 60 something 289 or 302 heads, those were the only one's I know of with stud mounted rockers. The GT40/P heads have that sequence cast into the body near the exhaust ports, so they're easy to ID and I'm pretty sure they have pedistal mount rockers.

 

are they bad heads for peformance .could they be dOOE heads?
thanks

 

what size spark plug?
what do you mean by stud mounted?
Are the studs screw in or are they pressed in?
Are the rockers rail type?

please try and answer all questions we are throwing at you....Might be able to narrow it down...

 

the spark plugs are 5/8 the studs are threaded in not pressed .whats rail mount

 

no there not rail mount the rockers seem to wobble back and fourth unless there under presure.the rockers are crane ductil iron rockers stud mount

 

well the plugs being 5/8 well eliminate D0OE they had 13/16 plugs
the studs are screwed in so they are not factory....
Rail type not mount.....the rockers will have edges at the end of the rocker that hold it over the valve stem....
like these



dose it have guide plates under the studs?

 

yes there rail mount no guide plates one thing i did notice the valve seals are way on top and bigger not like e7 heads.and where th spark plugs plug in they have a copery colour

 

not rail mount....(Rail Type) (rail rockers) has nothing to do with the way you mount it


is there a nut under the rocker that would allow you to remove the stud?

 

yes theres a nut to remove them and yes rail rockers . they look like cranes but the seals are so big and not on the bottom of the valve stems more in the middle .thanks