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I have a stock 1982 305 in my car at the moment. I was just wondering if anyone knows about how much lift the stock valve train can take before causing valve, piston collision or other such problems :lol:
Any cam suggestions or ideas would be great!
 

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check this out. Ask a reputable speed shop or call a camshaft manufacturer help line to match your needs

Most will recommend that you upgrade the valve springs in your cylinder heads, which is generally a good idea.
 

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I think I did a couple years ago when researching info on my dads ford. Can't remember my screen name or p/w though, maybe it was deleted for lack of use. Why do you ask?
 

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The name jon and your avatar...exact color of camaro was used by a guy who i remember from the site that's all.

He got banned, and then came back as "display name" 2.0.

Just wondering.
 

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I have a stock 1982 305 in my car at the moment. I was just wondering if anyone knows about how much lift the stock valve train can take before causing valve, piston collision or other such problems :lol:
Any cam suggestions or ideas would be great!
Well, if two piston's meet, I want video cause that would look spectacular however it happened. :)

But for the valvetrain limits. I'm basing this off my 89 car, so it might be slightly different, and these are based on NEW hardware, as it would have come from the factory, not the old, worn out springs that are on there 20+ years later.

The stock L98 cam is about .430" lift with 1.5" rockers. The L69 of previous years is the same as the L98 cam, but in a flat tappet configuration.

I would say that when factory new, the stock valve train could handle no HIGHER than .450" lift, and asking it to rev past 5500rpm consistently would be a bad idea.

So add several decades and the worn out springs are probably not safe past 5000rpm, and would barely tolerate .430 or more.

Hope that helps a bit.

I have an LT1 in my car now, and I have a set of alu. heads sitting on a shelf with springs good to .650" lift, even though the cam is only going to run .560 or so.
 

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I would defintly not suggest anything much bigger then an lt1 cam if your not going to swap springs or anything.

And I would like to add this to 89GTA's comment about not revving past 5500, My camaro push's 5500rpm no problem, several times mind you this is in park, when I was in the process of sea foaming the engine, this girl revved up there in no time, that was about 2months ago, absolutely not problems or abnormal noise's sence.

But of course this isnt like an daily thing for the engine, so be warned if you try it and your engine blows
 
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