I think it would be smart even on a stock cam...

I spin mine up to 67-6800 VERY regularly and have had no issues.... I've been doing it for a while now. I'm on a STOCK, unopened, bottom end with over 110K miles on it... I've never heard or seen a stock rod bolt failing simply because of RPM. I'll upgrade them when this motor gets torn down and bored, but for now, its rocking right along just fine.

 

what is a fair price for a set of them? do you have z06 springs?

 

Lingenfelter sells them for $52.95 plus shipping. I just odrered a set.

 

I wouldnt give more than $75 for a set. I have Comp 918's on mine which are getting replaced free from comp. Some sort of defect and they'd rather replace all upon request than fight with finding batch numbers and things.

 

what is the better spring, the 918s or a z06 set?

 

for a stock cam, the ZO6's will be great, if you go with anything aftermarket, even in the future, I'd go with the Comp springs... you wouldnt have to change them later if you did it that way.

 

Not trying to thread jack just had a general question about them,but how much would boost can the yellow springs on a stock cam take before floating?

 

funny you should ask, i noticed after making some WOT passes it was logging over 6700 rpm on a bone stock motor, many times, for some reason i have to set my shift a couple hundred rpm lower than i want it to. it shifts now at 6300 at WOT bone stock motor , never cracked a seal. Now what is really wiered is that it felt like it was still pulling at 6700.

 

I consistantly turn my 5.3 up 6500 for the one-two shift with jut bolt ons and up to about 6200 with a 100 shot of the bottle with zero problems so far. my motor has got 140k on it too.

 

ok, well i have a stock 5.3 internals with some bolt -on's, and 323's. first off i need a rear end, but after that i am not sure what to do with the cam or heads. would a custom tune help alot . i have a superchip programmer but it didnt seem to help too much. my best pass is 15.27 which doenst impress me at all. any suggestions would be great