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Re: 69 440
[Re: JohnRR]
#841329
11/05/10 12:45 AM
11/05/10 12:45 AM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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Quote:
Quote:
I know the CAT rockers are not in the same league as T&D, Harlan Sharpe, or Jesel, but with a mild hydraulic cam and open spring pressures of maybe #350 max the cheap rockers work fine. Being really cheap you could get the 1.7:1 ratio aluminum rockers for $200. A guy in our car club has been running them aluminum rockers on a near stock 440 for at least the last two or three years with no issues.
I'd rather not take my chances on the cheap rockers , that's funny you dropped names of the big buck rockers , I don't consider cats better than STAMPED STEEL rockers .
Your friend running them has been LUCKY , there is a very prominent member of this board that had a set of CCJ rockers fail with less than 500 miles on them , wasted his shortblock on his blown 440 , wasn't worth the few busks he saved on the rockers .
I really was just tring to say the higher ratio rockers may be an option unsted of replacing the cam. You could do the same with different brand rocker arms, but were talking really mild spring pressures, and RPM levels of maybe 5,500? not to mention this is a $500 engine. Replacing the cam or rockers will nearly double the engines cost. I have never used the CAT stuff myself, I just know a few guys who have. I'll take any verifiable info on parts breakage so I can warn my friends. Which rockers broke (aluminum or stainless), were the CAT brand or other off-shore brand, what were the cam specs and valve spring pressures, what was the max RPM, what part of the rocker failed (body, adjuster, roller, etc?)
I still recommend measuring the cam in the engine, they may have installed a cam that may be near the same as the replacement one your considering?
On the other hand new head gaskets are about $15 for the standard Fel-Pros. Not sure of the cost of the steel shim gaskets.
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