Roller Rockers need definite answer
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Freshman User
Joined: Sep 2002
Posts: 41
Likes: 0
From: columbia
Roller Rockers need definite answer
Ok I have a 68 t-bird 429. I want to add roller rocker arms. What do I have to do. My neighbor does a lot of engine work but its on those other guys stuff. He knows a lot Im just afraid hes missing something b/c I get different info from everyone I talk to. He says I can just order the roller rocker arms and theyll work fine Please help me.
thanx in advance
thanx in advance
More Turbo
Joined: Sep 2001
Posts: 691
Likes: 5
From: Kelowna
Roller Rockers need definite answer
If your current rocker arms are stock they should be cast iron rail rockers. If you want roller rockers you will need guide plates, hardened push rods, and aftermarket screw in studs. The screw in studs you have now are positive stop or shouldered and do not offer much adjustment, the push rod length should also be checked so you have proper rocker arm alignment If you want to see what a set of 68 heads look like with roller rockers check out my gallery Eric
Elder User
Joined: Jan 2000
Posts: 966
Likes: 2
From: Crooked River Ranch, OR
Roller Rockers need definite answer
To add to what Eric offered...you'll also need to mill .200" off the stud-pedestals to allow room for the guide-plates and get the stud height back to where it should be. Deen
Postmaster
Joined: Aug 2001
Posts: 2,882
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From: Nevada
Roller Rockers need definite answer
Your neighbor is wrong about this one. As Deen pointed out, you need to mill the pedestals down or buy one of Crane's bolt-on conversion kits to use roller rockers, guide plates and hardened push rods. Otherwise, your valve train geometry will be incorrect.
Senior User
Joined: Aug 2002
Posts: 201
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From: Texas
Roller Rockers need definite answer
This is a little off topic but.. Why in the world would a rocker with roller bearings in the fulcrum and a bushed pin on the tip wear out quicker than a stock rocker ? They couldn't be near as bad as the rail type rockers that unkeep valves in 100k miles. I think a typical performance motor valve springs are the real culprit. It is a pricey conversion,but there are not many better options for the early style valvetrain.
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
Roller Rockers need definite answer
I agree with 71cc. Rail rockers are good to 6000rpm, and not too many street trucks are running over 6000, so unless the change is to support other components and higher rpm, I can't see any reason to spend the money.
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Freshman User
Joined: Sep 2002
Posts: 41
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From: columbia
Roller Rockers need definite answer
after what the rail type did to the top of my valves I wanted to try roller rockers. Thanx for the info!!!
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