my car has 132k on it would anyone think that this cam would cause problems226/228 580/585@114lsa?my oil pressure stays at 60 crusin goes to 80 when im on it hard.i would also like at least a 100 wet shot on it. am i expecting to much for this many miles or will it be ok?thanks joe

 

With that many miles a cam and spray may be a death sentence. Going with a mild cam like that and keeping the RPMs below 6500 would be your best bet on keeping it together for awhile.

 

Hard to say. It really depends on how much the car was beat-on in the past, constant maintenance, etc.

 

do a compression/leakdown test

 

decided to just put my nitrous kit on it for a little more power

 

I just read in the most recent GMHTP that the stock rockers arent' designed to handle more than .550 lift. The rockers themselves won't fail, but it causes premature valveguide wear, which leads to burning oil.

Also, you'll want to upgrade your valve springs, and you might as well get retainers, pushrods, etc. while you're at it.

 

Could you link that article? The LS1 and LS6 rockers are the same part number. The 2002 and later LS6 cam exceeds .550" lift Must have been a GMHTP typo.

 

I've used stock LS1 rockers on every hydraulic roller build I've had. My current cam has .640 lift and has been in the car for over a year and 8000 or so miles. It has never burned oil. Oil burning has to do with crappy oil rings in the 2001 cars or the crappy PCV system on the pre-LS6 PCV system cars.

 

More than likely it was a marketing attempt to get you to buy rockers from their sponsors. Horsepower TV is like that....That's why I stopped watching it. They build the weakest **** using the stupidest combination (abomination) of parts.

 

That's entirely possible, as they were hawking a set of aftermarket rockers (Comp, I think) in the same article. However, I can usually tell when it's marketing fluff. This article was far more technical than the usual marketing fluff. Conclusion: they're either trying a lot harder to convince people like us, or it's real.

I agree about Horsepower TV (although I still enjoy Musclecar).

 

I don't see the article online.

LS6 cam lift is 0.551/0.541.
http://www.sdparts.com/product/12565...rCamshaft.aspx

 

The only reasoning for this would be that the stockers do not have a roller tip and the higher the lift the longer the sweep across the valve stem. More sweep equals more side load equals more wear on the valve guide. BUT, there's always a but, is this extra side load enough to cause notable wear and oil cunsumption in a reasonable amount of time? I don't know, anybody run a .550'' + cam for 100k miles yet?

 

This is exactly the reason that they gave in the article.

I don't remember there being any data on how much wear occurs over how much time, but I'm sure it would be relative to how much over 0.550 you go. 0.560 probably isn't a big deal, but 0.620 would have me concerned.

 

I've put ~20K miles on my setup with a .649" intake lobe, stock rockers like everyone else. No noticable play in the valve when changing springs recently, and my engine doesn't burn any oil at all.

I know several people with TR224 cams (roughly .580" I believe) that have been daily driving them since 2002-2003 without issues. I flipped a set of TEAs from one of them and when I had them cleaned up the machine shop said nothing about guide wear.

 

It's not a concern. STOCK guides are hard as hell, they aren't going to wear. Now, if you go to an aftermarket head with bronze valve guides then you can start to see a problem (hence the recommendation to run HS rockers or equiv).

For a stock headed (or 243) motor, that article is BS.