Safe RPM?
#2
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if the rod bolt were installed right then you could go past 7K, but with that LS1 stock cam, i wouldnt roll past 6200. it also matters what valve springs you have, and what kind of lifters your running. if you only have the rod bolts, i would set the rev limiter to 6200, no reason to go any higher, power will just start to fall off
#4
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I've upgraded to PRC 5.3 heads with double springs, LS7 lifters, 224/228 112 cam and an LS6 intake/ported TB. I've bumped the limiter to 6500, but the engine doesn't seem to give up and I keep smacking the limiter. I'm assuming I need to go to 6800 or so, but I wanted to double check before spinning close to 7k.
Any reason I shouldn't go that high?
Any reason I shouldn't go that high?
#7
Not to mention that your valvetrain needs to be up to the task, it's only as good as re weakest link.
6200 is appropriate for a stock ls6 intake ls1.
Power is done by 6000 rpms when my vette was full boltons...
6200 is appropriate for a stock ls6 intake ls1.
Power is done by 6000 rpms when my vette was full boltons...
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#9
FormerVendor
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No matter the cam or the size of it or the heads, the LS6 intake will always peak at 6700-6800rpm. It's the design of the intake manifold and plenum volume that keeps it from building more HP past this RPM.
I would set the limiter 200-300rpm higher than where you shift.
So if you shift at 6500, set it at 6800.
I would set the limiter 200-300rpm higher than where you shift.
So if you shift at 6500, set it at 6800.
#13
FormerVendor
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I've turned 7400rpm with my stock bottom end with Katech rod bolts(which I would personally recommend over the ARP's) but due to my intake manifold(Fast 92/96) it didn't pick up any mph in the 1/8th over shifting it at 7200 so I shifted it there on motor and I shift it at 6800-6900 on nitrous now.
Pass in my signature was shifting at 7000-7100.
Pass in my signature was shifting at 7000-7100.