Fuel pump rod for roller cam - Team Camaro Tech
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post #1 of 6 (permalink) Old Nov 22nd, 07, 06:38 PM Thread Starter
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Patrick
 
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Fuel pump rod for roller cam

Do I need a "special" fuel pump rod and bronze dist gear for a ZZ4 roller cam?

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/8-7.6sec@88mph,1/4-12.1@110mph,Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
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post #2 of 6 (permalink) Old Nov 22nd, 07, 06:46 PM
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Don
 
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Re: Fuel pump rod for roller cam

Need to check to see if this cam is a billet steel roller. My first guess is that these are not billet steel and will need the stock GM melonized gear. I would check this one out .

As for the fuel pump push rod, I would guess again, if using a stock pressure type fuel pump and stock fuel puressures, I would say use the stock push rod. But I learned my lesson the hard way, I use a stock pushrod on a Comp cast roller and wore down the fuel pump lobe within 500 miles. I would go for the Comp roller tip push rod to be on the safe side.

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post #3 of 6 (permalink) Old Nov 23rd, 07, 07:03 AM
Tom
 
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Re: Fuel pump rod for roller cam

Quote:
Originally Posted by speedfreek View Post
Do I need a "special" fuel pump rod and bronze dist gear for a ZZ4 roller cam?
Research till your satisfied with a decision, But...
A year ago I pulled my hair out trying to figure out for sure what was special needed for a Hyd. Roller Cam I was installing.
I found out its safe to use stock fuel Pump rod and Stock Dist. Gear.(I use a MSD Probillit) for the Hyd. Roller Cams. I think some manufacturers are saying that on there Advertizement now days?

Solid roller is the one thats not compatible with stock.
Dont take my word for it though..

69 , 450HP GMPP 383 engine ,L88 Hood, Richmond 6sp Trans, Centerforce 2 clutch assy & flywheel, Hooker side mounts,MSD Pro billet dist. , 6a ignition module, 340 rear composite,460 front coils. Dewitt, Aluminum Radiator, 16" Spal Fan
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post #4 of 6 (permalink) Old Nov 23rd, 07, 08:18 AM
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Dave
 
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Re: Fuel pump rod for roller cam

Cam core determines the need not the application of hydraulic or solid. All billet steel cams are harder than a stock cam and you can not use stock parts with them. When in doubt use a plastic, brass tipped or roller tipped push rod. Better safe than sorry. Like said above the majority of cams are not ground on a billet core. For the few that are read the instructions for installation it should tell you there what to do.

Larger Dave
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post #5 of 6 (permalink) Old Nov 23rd, 07, 08:46 AM Thread Starter
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Patrick
 
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Re: Fuel pump rod for roller cam

Quote:
Originally Posted by Larger Dave View Post
All billet steel cams are harder than a stock cam and you can not use stock parts with them. When in doubt use a plastic, brass tipped or roller tipped push rod. Like said above the majority of cams are not ground on a billet core. For the few that are read the instructions for installation it should tell you there what to do.

Larger Dave
I bought this off e-bay, no instructions. I would assume that it's a stock cam, uh oh ASSUME! You know what that means. I will do more research on this before installing it.

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/8-7.6sec@88mph,1/4-12.1@110mph,Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
383 IS SOLD!
Building a 489BBC
http://s90.photobucket.com/albums/k264/pnewell44/
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post #6 of 6 (permalink) Old Nov 23rd, 07, 12:56 PM Thread Starter
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Patrick
 
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Re: Fuel pump rod for roller cam

Quoted by Dougs67camaro: YES. You need a melanized gear. You can use a bronze gear , but they do wear pretty quick. The zz4 cam is a steel billet roller. As far as the fuel pump rod, i think the factory rod will work. If you are worried, just call the dealership and order a zz4 pushrod. Cannot be that expensive. Hope this helps. Doug

Thanks Doug, I'll order the melanized gear and a roller tip fuel pump rod.

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/8-7.6sec@88mph,1/4-12.1@110mph,Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
383 IS SOLD!
Building a 489BBC
http://s90.photobucket.com/albums/k264/pnewell44/
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