Max RPM on stock shortblock

**slims00ls1z28** · 04-26-2007, 11:04 PM

OK I have a MS3 Cam (came in today woot!) Comp 921's, hardened pushrods (TSP), Titanuim retainers, Hardened seats, ported LS6 oil pump, LS2 Timing set. I know that the MS3 will put the powerband much higher than what it is currently. I will start installing everything next week hopefully and will get it tuned shortly afterwards. I have no clue as to what the curve is going to look like or where max power is at but if it is over 6500 should I be looking into ARP rod bolts? I'm sure my valvetrain is safe given I bought the kit for that cam but now I'm worried about the bottom end. What is the max recommended rpms that would be considered "safe" on my bottom end?

**2001hawk** · 04-27-2007, 12:51 AM

The bottom end should be safe to just over 7 grand. However since you didn't say anything about solid lifters I wouldn't go past 6800 RPMs.

**slims00ls1z28** · 04-27-2007, 04:01 AM

Hmm solid lifters at 7 or wil LS7's do?

**TACE02** · 05-03-2007, 07:08 AM

My Rev limiter is set to 6700 running that cam cause it starts losing power right around 6500 (gives me a couple hundred RPMs to kinda play with) bottom end is fine. And good to see you got the oil pump. someone advised me I wouldn't need it, and right at 1 year after the H/C mod it took a shit.

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**josh110781** · 05-05-2007, 07:20 AM

i have the same cam and it starts making its power at 4700 and peaked at 6300. once it hits 4700 its almost a flat line to 6300. maybe picked up around 15 more horsepower from 4700-6300.