I am planning on puttin in a cc503 and i am wondering what all supporting mods i need. Will new RR, lifters, retainers do?

 

hardened pushrods and springs

 

you don't really need lifters.

I would do RR, springs, retainers, locks/seats, pushrods.

 

I ran cc986-16 springs, chromoly retainers, seats and locks, comp R's, Comp promag 1.6 S/A 3/8th rr's and trickflow pushrods with my cc503 setup. It was a nice setup and ran great.

 

CCA-4705-16 Comp beehive locators
CCA-614-16 Comp 10 degree +.050 locks
CCA-795-16 Comp steel retainers
ARP-134-7103 ARP 7/16" studs
CCA-26918-16 Comp 918 beehive springs
7808-16 Comp oem hardened pushrods

Speed Engineering might still have these on sale, so call em up. I'd reccomend the 918 springs over any other unless your cam lift is over 580 or so, which I doubt it will be. Get the 1.6 7/16" NSA pro mag RR and ARP 7/16" studs and the GM guideplates. Search around and you'll find all the info you'll need. And you shouldn't need new lifters, especially not the Comp R's.

 

Alright well do you guys think i can get all you mentioned and installed for 1600. I know I should do it myself but I can't.