Author Topic: cam & head help  (Read 2693 times)

Offline KoolerSL2

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cam & head help
« on: April 23, 2010, 09:09:50 AM »
hey guys i know its been a long time.
but motor is coming out soon and im needing some help trying to find a cam thats gonna hold up...

called Comp direct and can get a custom ground hyd roller cam & lifters for $250.
but with the valve springs im running i dont know if it'll hold up either.
is there a way to measure my valve spring pressures and such without full disassembly of the heads?

and next question is if i go solid roller ( which lookds to be what im going to have to do ) how well do most of them hold up on the street?
1985 C10 LWB: gone but never forgotten
1987 R10 LWB: 107k mile near original survivor
2020 Mustang GT: 6sec 1/8mi driver

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Offline VileZambonie

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Re: cam & head help
« Reply #1 on: April 23, 2010, 09:25:20 AM »
Is this a roller block? If not you'll need retrofit rollers, different pushrods, a method of limiting cam thrust, distributor gear, and springs matching the cam specs. If it's a small base circle cam you need to be careful too as the lifter will travel further down in the bore. Is this a stroker? Personally I would run a hydraulic roller.

AS far as testing your valve springs, I would check them uninstalled on a valve spring tester. This is the one I use



Any machine shop should have one, you could bring a spring down to them.
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Offline KoolerSL2

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Re: cam & head help
« Reply #2 on: April 23, 2010, 10:31:42 AM »
it is a 91 model block.
its got the bosses made for the roller spider.
just need to be drilled and tapped.
1985 C10 LWB: gone but never forgotten
1987 R10 LWB: 107k mile near original survivor
2020 Mustang GT: 6sec 1/8mi driver

https://m.facebook.com/pages/category/Automotive-Customization-Shop/HPR-105373468425153/

Offline VileZambonie

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Re: cam & head help
« Reply #3 on: April 23, 2010, 07:07:49 PM »
You won't need anything fancy then. Use the stock dist drive gear. I just used this cam for an engine I'm building.
 
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              ⌠ŻŻŻŻŻ'   [☼===☼]
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline team39763

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Re: cam & head help
« Reply #4 on: April 23, 2010, 07:52:55 PM »
I know a bunch of guys down here that run solid rollers on the street and have been for years.  I guess it's all in the setup...making sure you got good valvetrain geometry to begin with and then maintaining it.  I do know that a lot of guys don't recommend it though.

Offline VileZambonie

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Re: cam & head help
« Reply #5 on: April 23, 2010, 08:39:57 PM »
It's more noisy and annoying than anything. I wouldn't run one in even a weekend warrior. Something for the strip is a different story
,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10