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Anyone know anywhere to buy a new stock camshaft? I cannot seem to find one.
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What engine? By "stock" do you mean from the OEM or after market replacement?
Ron
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It is a 250. I would like to go with OEM... unless I can find a good blower-cam.
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Sealed Power Cam CS633,should be a close match to OEM cam spec.s.
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Most camshaft manufacturers will provide a custom grind camshaft for a forced induction engine.
Also, under the 'Tech Tips' section of this forum there is section with a number of camshaft specifications titled 'Cam Specs, 250" Series Engines'.
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I tried the Tech tips and it doesn't go anywhere... When I click on it it go to a blank screen.
The only reason I have been looking for a stock grind is that I was told I need a near stock spec for the supercharge to work the best. Since there is almost no overlap.
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Too many variables: how well does the head flow, what's the static CR, and especially how much boost?
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I am going to be using the stock head for now... while I am building the performance one... it is fully ported, intake bosses removed, 1.94 1.60 valves, undecided on the lump.
C/R is going to be 8-8.5:1... depending on the pistons I can find. I still have not found the forged pistons.
Boost is going to start at 5.5psi while the engine is breaking in. Then it is going to be 10psi!
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Greetings . . . I've read the same about overlap and blowers: ChevyPerformance - Take Chargebut you may well be able to go with a bit more duration then stock and still avoid excessive overlap. And apparently a dual-pattern grind is best - with longer duration on the exhaust lobe so that everything you pump-in has time to get-out. regards, stock49
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The lobe separation angle is how excess overlap is controlled with long duration cams. As the duration goes up, spreading the lobes (higher number LSA like 112, 114°) reduces the overlap effect compared to the same duration with 106, 108°.
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I would call delta cams in Tacoma washington and tell them you want a hydraulic cam with a 268 comp intake lobe, a 280 comp exhaust lobe, ground on a 114, with 4 deg of advance. That would probably be inexpensive and run well with a small blower on a mild engine. Aren't you trying to put an M90 on a 250?
Last edited by 56er; 04/17/10 04:31 PM.
"The first rule of overkill: You can never have too much overkill." "Overkill is underrated."
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Dodgycanuc,
I believe there is more than one way to access this forum board. On way allows access to the blue side panel subjects, while logging on the other way does not. I am on by "www.inliners.org"
Someone may also chime in to help here.
Last edited by Winter; 04/18/10 10:28 AM.
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Schnieder cams has a dual grind...I just bought one for my 292, but its not running yet. I was very pleased dealing with them. http://schneidercams.com/
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