Thread: Safe rev limit on a 392 crate?
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Old 04-23-2004, 05:08 PM
MidOHasp MidOHasp is offline
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You say your 392 is a crate motor. what are the guts? Sometimes "safe" and "makes sense" are different numbers.

My 408 is all forged guts, basically bulletproof, could probably spin up to 7K without any issues, but it's got a hydraulic roller cam with hydraulic lifters and starts to float much past 6K. Bigger valve springs could get me up a little higher, but not a whole lot.

Just curious what is comprising your 392. If it's a hydraulic roller cam, there's really not much reason to take it past 6300-6500.

I just put the 6300 chip in mine after some test miles at 6K. Sounds VERY nice running up to 6300. At 6K it had more to go. At 6300 I don't think it really has much more to go....perhaps another 200 RPM but I'm not so sure. I will test it and see if it is floating.

Just my $0.02
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