what can my stock L03 take on for RPM's...just curious ...ive never had it over 5000!!

 

and i wouldnt recomend doing it either. i find that my lo3 quits pulling around 4500, so i couldnt see taking it any higher.

 

A healthy stock L03 should be fine at 5000 rpm as far as "safety" is concerned. Valve float is going to come into play at some point above that, but that will depend on the state of your valve springs. I don't know exactly where that happens on a stock L03 because power dies above 5000 rpm anyway ...so it simply isn't necessary to go there. But as far as the rotating assembly is concerned, an L03 should be "safe" to around 6000 rpm. Before that I think you'd certainly be into valve float problems. After that you'd be stressing the 2-bolt main caps, have balancing issues, etc. I set 6000 rpm as the safe cut-off on a stockish 305 ...and better valve springs and screw-in or pinned studs are a necessity if you want to get away with that. Above 6000 and it's time to start considering upgrading the rotating assembly/main bolts, etc. I don't think a stock 700r4 transmission handles 5000 rpm very well (mine showed signs of centrifugal clutch apply and I never took the motor past 5000 rpm up to that time ...and I'm the only driver of the car).

 

There were a few cases when I accidentally plopped the motor into the redline range (ouch).

Sometimes I like to douche off in my car, just because its the only thing I have to douche off in. My car has been through really tough times before with the previous owner its not even funny.

Last weekend, I was manually shifting the car (I don't know why I do that, its not neccessarily good but sometimes I just feel like driving my car as if it was a manual) and I was making a turn unaware that I had plopped it down to first gear...I took off as soon as I made the turn and i was like whoa the car should've shifted by now, until I see my tach going into the 5700 rpm range and then I am like, yeah crap....so I shift it and it barks into 2nd gear and I just bang it back to 4th and leave it.

There were a few times when I revved it out to about 6k but I don't do that very often.

LO3s can take alot, but I am not sure how much mine can take...

 

With an LT1 cam and tuning your motor will love to spin to 6k. I have never had a problem.

On a stock set-up 5000 rpm is more than enough. Past that and you risk stud damage and or valve float.

 

ive been wanting to get an LT1 cam...good project for this winter!...what else should be done then??... o yeah and a kinda off topic question, is downshifting hard on the 700r4..in the higher RPMs?

 

I'd change the chain and springs while you're in there.

 

Of course. For one, the clutches can burn. It's unlikely that you'll instantly lose a gear doing this from time to time, but it will cause heat, and, most likely, shorten the life of your transmission. The 3-4 clutches are notorious for burning in the 700r4 - they have weak springs that don't always provide a quick release of the clutches on a hard 3-2 downshift. If you ever rebuild your transmission upgrade the 3-4 and forward springs.