Looking for a 500 efi camshaft or a 168731 I believe is the same

the 731 cam is smaller than the efi cam,,efi cam is 230/236,731 is 226/234

sutphen is correct - and I do have a spare one that came out of a low hour Merc 500EFI.
I would sell it for $325 shipped. You must use a melonized distributor gear.

Crane 731 / 139011 retrofit
Hyd. Roller
288/296 @ .004
226/234 @ .050
.587 / .610 in/ex lift
112 LSA 5600rpm

500 EFI & 700 SCI Merc engine
Crane 139771 Hyd. Roller 169621 HR-292-2S-14 IG
292/298 @ .004
230/236 @ .050
.598 / .610 in/ex lift
114 LSA 5800 rpm

[QUOTE=SFOcean;4885614]sutphen is correct - and I do have a spare one that came out of a low hour Merc 500EFI.
I would sell it for $325 shipped. You must use a melonized distributor gear.

Crane 731 / 139011 retrofit
Hyd. Roller
288/296 @ .004
226/234 @ .050
.587 / .610 in/ex lift
112 LSA 5600rpm

500 EFI & 700 SCI Merc engine
Crane 139771 Hyd. Roller 169621 HR-292-2S-14 IG
292/298 @ .004
230/236 @ .050
.598 / .610 in/ex lift

IG stands for iron gear on the cam .

so what distributor gear should I use

Use iron gear on distributor as well

Teague also has new ones made by a different manufacturer

still looking for one more camshaft.

Have one like new low hours 350.00
Ron Sporl
504-616-6005