not worth the performance increase over stock. 318 closed chambered heads, I presume they're 302 heads? they peak flow ~.450" lift, you wouldn't gain anything by opening the valve more than you are now with that cam.

Ahhh ok I see now so I guess I will just go with stock lifters
and no there 521 heads but I think they are basically the same
I have some stock rockers off some old used heads but don't know if they still work good
do they wear out after awhile or can I just clean them up and slap them on??

Does anyone know where I can get a set of stock rockers I can't seem to find anywhere??

Get the stronger stock rockers.
P4529742

I swap to a roller cam on my 360 headed 318

did it with heads on engine with the KD tool hand compresser

the comp 901-16 springs drop on,no other machine work needed,they are a single with a damper

they will take stock valve seals

used all the stock roller lifters/push rods/shafts/HD rockers/retainers/locks from a 1990 core/parts engine

used a lunati voodoo roller cam 60710

258/264
207/213
.485/.485 lift

I got the lunati springs but the are double with a damper for all of there sb cams

so I researched and Patrick recomended the comp 901-16

been 6200 rpms with it and no valve float...

just match up the spring rate of the cam manufactures springs and pick the one thats the closest or a tad more than they spec

the comp 901-16 cover a lot of them for a sb

done swaped about 4 sets on my buddys 4-trucks and a set on mine,we are useing lunati cams with the comp 901s in all the sb engines now

ALIGHT!!!!!!
thanks for all the help guys I know exactly what I need now
I probably would have ended up doing all this wrong if I hadn't asked
hope all yalls builds go well
cheers to everyone who helped me

like I said in my PM, I have some low mile stock ones if you want them....

ran stock rockers on my old 360 with a comp XE262. ran for ~23k miles before I sold the whole running engine without a problem.