I'm assembling my heads and I don't know what ratio roller rockers I should use for my application.
355 , rebuilt stock internal
200 cc world products sportsman ii with 64 cc chambers
Valve train bought as a kit with cam, Manley race valves(donated)
Comp cams extreme energy cam 224/230 @.050 112 l s
Holley stealth ram w/ 58mm throttle body
42 lb injectors (if the guy can tune it)
Hooker headers 2055s
Ran on a 91 map system

 

1.5 is the standard ratio unless your cam card indicates the use of 1.6. You could check with Comp cams. Go to their web site. There's a toll free help number you can call.

 

i have the same heads as you and it says that you cannot run 1.6 roller rockers without longer pushrods.

run 1.5s and tell me how it runs im doing a build pretty much with the exact same stuff as you with just a little less cam