I like that term! I'll say tapers off from now on though

 

It does not fall on its face at 6500 rpm. The builds power all the way up to 7000 rpm and even higher with modification.

 

The stock valve *springs are good to slightly past 7250 rpm. My rev limiter has been set at 7250 rpm for over a year, and i shift when my light on my interceptor comes on (7075 rpm). By the time I shift i am almost at the limiter. I have only bumped it once or twice.

 

alright i need to get an interceptor cuz im gonna get tuning done when i add meth.

 

It's not the valves, its the valve springs. And that's at 7600 rpms.

 

Valves are fine, it the springs are too soft, they need a higher seat pressure

 

I set my rev limiter to 7500. I'll shift at 7250 or so. I have 60k miles on the car. Been doing this for years. At the track, freeway, etc.... Engine runs fine.....

Shift at your own risk....

 

Yes, thats what i meant. Thank you for clarifying

GM recommends 78lb valve springs for anything past 7250 rpm. They actually say past 7000 rpm, but i have spoke to Bill (more tq more hp) about this, and he claims they will be fine slightly past 7250 rpm. Lots of people have been shifting at 7400 rpm for years w/o issue. Like Roel said "shift at your own risk".

If you want to rev to/past 7500 rpm it's recommended upgrading to neutral balance shafts.

 

I see how this has turned into more of a redline question. LOL. Its more about will I be ok with a tune for 42s and a 2.8 if I dont rev the hell out of it and exceed the duty cycles?

 

Yes, as long as you get a good tune.

My first post mentioned this

 

Didn't read my posts above did ya..?

 

You will be fine if tuned

 

Yes gentleman I did, and thank you. I should have been a bit more specific. I was looking for more of a concesus. Seeing as how you two have answered I will go with a YES! LOL. Thank you for your time!

 

Heh, you're welcome. That last post I made came across rude, but not how I meant it to be. I'm sarcastic/joker at times. Okay, all the time.

 

No problem, and good luck with your setup. Let us know how you make out.

 

Thank you all! For some reason I have to resubmit this post. Hmm.

Yes sir.

No problems here sir. Thank you!

 

MANY MANY of the knowledgeable members left the site, a few of us stuck around. Staged07SS and myself are good to get advice from. Frew as well.

 

Oh, and for being an old fart, mrbelvedere is a good source too

 

 

*cough* 383_stroker as well Sorry buddy, was just skimming who was in the thread lol

 

Aww thanks bud *tear in eye*

 

Suck it up man, none of this emotional stuff allowed

 

Haha

Thanks for the props though man. It really sucks that most of the guys that made this forum what it is left. Now, the site is starting to decline day by day.

 

Correction, post by post. There is an infinite amount of misinformation on this damn forum. No one listens to me when I comment, and they follow the "herd over the cliff". I'm not right 100% of the time, not even 90%. But damnit! This board has a 99.9% fail rate on information

 

I think anyone that cares about there car on here listens. I'll give anyone the opportunity to say what they think is right. I hope there wasn't anybody who got hurt feelings from my questioning them. I just haven't seen a dyno of anyone on a stock top end (head, cams, springs) "building" power to 7000 on an M62. Don't get me wrong, I'm not bagging or trying to talk crap. If it's being done I just want to know how they are doing it. I'm too damn old to be trash talking on a forum anymore.