73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Performance => Topic started by: KoolerSL2 on April 23, 2010, 09:09:50 am
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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?
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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
(http://www.tooldiscounter.com/images/productimages/RIM69.JPG)
Any machine shop should have one, you could bring a spring down to them.
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it is a 91 model block.
its got the bosses made for the roller spider.
just need to be drilled and tapped.
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You won't need anything fancy then. Use the stock dist drive gear. I just used this cam for an engine I'm building.
http://www.summitracing.com/parts/HRS-180235/
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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.
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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