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Old 08-05-2006, 09:30 PM
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Solid or hydraulic?

Hey fellas I got a delima. I have a 350 bored 30 over with bow tie heads. Engine was just fired up for the first time last week and I was told I need the correct distributor gear that matches up to the type of cam I am running. I know for sure it is a roller. Is there any way to tell if I have a solid lift roller cam or a hydraulic lift roller cam? The duration is 314/306
Valve adjustments 26-intake
28-exhaust.

thanks for any help
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Old 08-06-2006, 12:43 AM
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If you have to lash your valves it is a solid roller as hydraulic rollers require no lash. The issue would be with the distributor drive gear on the cam. Most solid roller cams have the gears cut right into the billet cam core, where as most hydraulic cams actually have a cast iron gear that is pressed onto the cam. The billet gear on the solid will require you to run a bronze or composite gear on the distributor. I chose the composite myself, as they far outlast the bronze gear which will actually wear out over time. If you dont change the gear it will eat a standard stell gear in no time, usually sending all the material it wears off through your bearings
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Old 08-06-2006, 05:07 AM
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Solid or hydraulic?

You need a little more info on your cam.Nowdays,some manufacturers make solid roller cams to be compatible with cast dist gears,if you use a bronze gear in the wrong application it will wear out in a very short time,you also need to know if you do or dont have a solid type,setting the correct valve lash as specified by the manufacturer is very important to the longeivity of your cam.GM makes a "melonized " distributor gear that is recommended instead of a standard cast gear,they use it in their roller equipped crate motors.If you arent sure what you have you should consider pulling the cam out to get a part #,you could also pull the intake off and see what lifters are in it.
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Old 08-06-2006, 09:03 AM
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thanks a lot for the help. Going to do the distributor gear replacement today!
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