The first thing that shocked me about the new CC rockers were that they
took the crappy Ford design and just duplicated it (I think anyway from the
pictures that I have seen). This design is really horrible in every
respect except for the cost. The rockers are cheaper due to stamped steel
(cheaper than casting), aligned by the "sled fulcrum" (cheaper than close
tolerance alingment holes in the heads or guideplates), and positive stop
(no adjustment possible so that the factory can pump them out faster).
Really and truly junk, but satisfactory for the grocery getter I suppose.
Their real main problems for hotrodders is mainly severe friction at the
sled fulcrum area which Crane make a fix kit for the Fords, wide tolerance
range for the rocker ratio, and you need the adjustment if you are really
playing with the engine like valve jobs, head/block milling, and/or cam swaps.
Now the Crower stainless rockers that I have used before are truly
beautiful and worth their money. Comp cams supposedly now makes some
*hopefully* cheaper ones that use a ball fulcrum and roller tip just for
the modern Magnum motors that would probably not need the valve covers to
be touched.
Nicholas
At 01:04 PM 4/3/98 -0600, you wrote:
>I was flipping through an old (Nov. '97) issue of Hot Rod, and it had some
>valvetrain hints. Then, I came across the valvetrain buyer's guide. Is
>anyone on the list using roller-tip rockers on their otherwise-stock
>(valvetrain-wise) Magnum V8? They say the benefits are greater
>strength, cooler operation, resistance to deflection, and more accurate
>rocker ratio. And, Crower makes a set of self-aligning, roller-tip rockers
>that they claim will add 20HP to a Magnum V8 (50 state emissions-legal,
>too). They also say that the 1.7's are compatible with stock cams &
>valvesprings.
>
>Anyway, I asked Lance about them and he said he got 11HP, but I'm not
>sure if he had already changed other things or not. If you're reading this,
>Lance, how about giving the list your best impressions of this mod for
>daily-driven, street applications? I'm sure others are interested. Thanks.
>
>I don't know alot about this mod, so I have some questions. Is this a
>smart mod for a truck that is used for weekend tow duty? Will it affect
>my fuel economy? I know they say that the 1.7's are compatible, but
>should other things be upgraded at the same time to ensure reliability?
>How much labor are we talkin', if I take it to a shop?
>
>Thanks for any help.
>
>Steve '98 CC Sport V8 5-speed 3.55
>
Nicholas McKinney
Applied Industrial Technology, Inc.
www.usaait.com
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