I have used the search and getting some conflicting info.

Cam - 230/236 duration with .598/.610 lift. Possibly Crane 169621 or 168761 depending on if it's a 112 or 114 LSA?

Lifters - Crane 16535-16?

Rockers - Crane Gold 13750-16?

Springs - ???

Heads - Cast iron with 1.88" ex valve and 2.19" or 2.25" in valve?

The cam is Crane grind #169621. The part # is HR-292-2S-14 IG. The specs are 230 / 236 .598 / .610 114*.
The lifters and rocker arms are also Crane.
The heads are 088 castings with 1.88 and 2.250 valves. The black engines had the 2.19 intake valves.
Eddie

Thanks Eddie, you know what springs were used?

I'm pretty sure they were Crane's but I don't know exactly which ones. Sorry I'm not of any help on that one.
Eddie

No problem I was most concerned with the cam and heads. Thanks for the info!

comp 929-16 springs on the 500efi,merc used the cranes on the older 500 carb,i use the manley 10 degree locks and retainers on all my rebuilds,merc uses the7 degree not sure the brand ,on the older 500 carb engine most of the spring problems was from the retainer pre-loading the inner spring too much merc would sell you the springs and they would include the updated retainers

Thanks Eddie and MGD.

I have the exact same cam in my 502 with the 4/7 swap. The heads are off and getting rebuilt. In your opinion, would I benefit more from a slightly larger cam or bigger intake valves?