Thanks 02*C5
I really appreciate all of you putting out there how high you've been spinning up your SBE LS engines! Has anyone had a RPM related failure?

 

The only failure I experienced was in my heads actually. Spring gave but I had dual so there was just a slight kiss of valve to piston but valve was fine and the piston only had an "eye lash" mark.

 

With a BTR stage 2 cam, 227/234, my tuner set the limiter at 6800. Makes peak at about 6300.

 

Thanks, very relevant info.

 

True. That is why I specified "bone stock". I was merely giving 1 legitimate data point for a known specific setup. Obviously in my case I put in hardened pushrods and never had the issue again.

 

Add my SBE LQ9 (PRC heads (231/234) to the 7000 RPM limiter club shifting at 6,800 RPM. NOS Mini Progressive kills the spray at 6,700

 

If Martin said, shift at 6800, set limiter at 7100 and see how it responds. You can add or take away 100rpm at shift to dial it in (assuming street tune and not dyno). A correct and healthy valve train will rev without issue or concern beyond induction system limit. An old unhealthy valve train can/will bend push rods if out of control due to over rev. If SBE was disassembled and rod bolts reused without measuring stretch, this will be an unknown. Only SBE rod bolt failures I know of were reused bolts without stretch measured.

If not looking to get the most out of your combo, lower shift point and limiter. Your valve train won't complain but you will...

 

Thanks for that info. My valve train is new and spec'd by Smallwood Race Development, Total Engine Airflow and Manton pushrods so I feel confident with the valve train. My biggest concern with the valve train are the lifters. White box LS7 lifters. I wish now I would have spent the money on genuine GM Performance Parts lifters