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Old 10-21-2019, 02:20 PM   #1
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Default Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

I just purchased a new hydraulic roller cam from Howard's for a 90s small block with a factory hydraulic roller. Their tech line is telling me I could use either the iron cam gear used on the flat tappet small block or the melonized gear used on the factory hydraulic rollers. I was always under the assumption that any kind of roller cam needed to have the harder cam gear. I am posting to get some opinions from those who have been down this road before. I really don't want to take a chance of trashing a $350 camshaft. Any professional advice would be greatly appreciated!
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Old 10-21-2019, 02:26 PM   #2
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

My personal choice would be the melonized gear.


Also, one trick that is worth doing is to cut a small groove in the dist housing between the oil feed band and the gear. No bigger than 1/8" x 1/8"
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Old 10-21-2019, 05:56 PM   #3
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

Depends, is it a cast core or a billet 3 piece core with a cast dist gear? If so, you’re fine with an iron or melonized gear.

If it’s a billet one piece core, use the composite gear. I’ve had great results.
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Old 10-21-2019, 06:30 PM   #4
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Originally Posted by Horndog View Post
My personal choice would be the melonized gear.


Also, one trick that is worth doing is to cut a small groove in the dist housing between the oil feed band and the gear. No bigger than 1/8" x 1/8"
Seriously....
Have you ever seen how much oil an 1/8" groove would move..
Bad idea, not needed, plenty of splash oil flying around to oil that gear......
Bad advice....
Period.
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Old 10-21-2019, 10:43 PM   #5
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

I believe the camshaft is ground on a SADI core. Would that make a difference?
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Old 10-21-2019, 11:19 PM   #6
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Originally Posted by notched View Post
I believe the camshaft is ground on a SADI core. Would that make a difference?
If so, that is a soft core, you can run a regular gear.
Did you ask Howard's??
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Old 10-22-2019, 12:21 PM   #7
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

Quote:
Originally Posted by RCM Racing engines View Post
Seriously....
Have you ever seen how much oil an 1/8" groove would move..
Bad idea, not needed, plenty of splash oil flying around to oil that gear......
Bad advice....
Period.
It's painfully obvious you missed these words ------ "no bigger than".
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Old 10-22-2019, 01:08 PM   #8
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

Quote:
Originally Posted by RCM Racing engines View Post
Seriously....
Have you ever seen how much oil an 1/8" groove would move..
Bad idea, not needed, plenty of splash oil flying around to oil that gear......
Bad advice....
Period.
Only "mod" I do is to grind of casting flash on the cheap distributors. Some have a big enough ridge it restricts oil to the lifters.
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Old 10-22-2019, 02:34 PM   #9
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Originally Posted by kimosabi View Post
Quote:
Originally Posted by RCM Racing engines View Post
Seriously....
Have you ever seen how much oil an 1/8" groove would move..
Bad idea, not needed, plenty of splash oil flying around to oil that gear......
Bad advice....
Period.
Only "mod" I do is to grind of casting flash on the cheap distributors. Some have a big enough ridge it restricts oil to the lifters.
He is talking about from the oil groove that feeds the lifters down towards the cam/dist gear.
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Old 10-22-2019, 02:36 PM   #10
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Quote:
Originally Posted by Horndog View Post
Quote:
Originally Posted by RCM Racing engines View Post
Seriously....
Have you ever seen how much oil an 1/8" groove would move..
Bad idea, not needed, plenty of splash oil flying around to oil that gear......
Bad advice....
Period.
It's painfully obvious you missed these words ------ "no bigger than".
It's not....
If you are even grinding a 1/16" groove you are moving a shit ton of oil... it's just not needed... Some of you guys create your problems.....
Kinda like a self inflicted gun shot to the chest....
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Old 10-22-2019, 07:55 PM   #11
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

Quote:
Originally Posted by RCM Racing engines View Post
It's not....
If you are even grinding a 1/16" groove you are moving a shit ton of oil... it's just not needed... Some of you guys create your problems.....
Kinda like a self inflicted gun shot to the chest....
Been doing that mod for years and never had that first oiling issue.
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Jim Horner

" ...oh no, what the fuck was that?
...the motor ... we've thrown a rod.
...is that serious?
...yup."


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Old 10-23-2019, 02:35 AM   #12
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Default Re: Cam gear for Howard's cams hydraulic roller in a Gen 1 small block Chevy

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Originally Posted by RCM Racing engines View Post
He is talking about from the oil groove that feeds the lifters down towards the cam/dist gear.
I know, was just adding. That extra path is not needed IMO. If anything you're taking oil from the lifters adding to where there is already plenty of oil.
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