Landon Engine Building
Member
Hello, I’ve recently built my first engine (Predator 212 generation 3). It’s been a really fun and educational process, and I’m looking to take the engine to the next level with an upgraded valve train (mainly ratio rockers). I’m looking for advice on what supporting mods will need to be made to the valvetrain to safely handle 1.3 ratio rockers. Also what rockers would you recommend: cheap stamped steel, billet steel, roller tip? (I don’t want to spend too much money)
Engine currently consists of:
Predator 212 generation 3 block and crankshaft
Stock head… for now
Dyno CM camshaft (with 22 pound valve springs)
ARC billet connecting rod +.040”
ARC billet flywheel 6625
Predator Hemi flat-top piston .550 compression height (for 0 deck height)
.027" MLS head gasket
22mm Chinese Mikuni carb kit
Homemade large header (no muffler)
From what I understand it’s not a good idea to run the cheap stamped 1.3 ratio rockers with this cam, Also I assume I would need 26 pound valve springs for this cam and rocker ratio combo? I’ve heard it’s not a great idea to run 26 pound springs with stock valves, retainers, keepers, etc, although I know people do it. So is there a relatively inexpensive way to safely run my desired rockers? The reason I’m interested in this rocker ratio is because I’ve heard that the CM cam with this rocker ratio and a similar sized carb is supposed to be a really good combo. Thanks for any advice.
Engine currently consists of:
Predator 212 generation 3 block and crankshaft
Stock head… for now
Dyno CM camshaft (with 22 pound valve springs)
ARC billet connecting rod +.040”
ARC billet flywheel 6625
Predator Hemi flat-top piston .550 compression height (for 0 deck height)
.027" MLS head gasket
22mm Chinese Mikuni carb kit
Homemade large header (no muffler)
From what I understand it’s not a good idea to run the cheap stamped 1.3 ratio rockers with this cam, Also I assume I would need 26 pound valve springs for this cam and rocker ratio combo? I’ve heard it’s not a great idea to run 26 pound springs with stock valves, retainers, keepers, etc, although I know people do it. So is there a relatively inexpensive way to safely run my desired rockers? The reason I’m interested in this rocker ratio is because I’ve heard that the CM cam with this rocker ratio and a similar sized carb is supposed to be a really good combo. Thanks for any advice.