Lt1 rev limiter vs. hotcam red line?
Thread Starter
Instructor
Joined: Mar 2001
Posts: 181
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From: Swansea, IL, USA
Lt1 rev limiter vs. hotcam red line?
I am hearing the LT1 rev limiter is at approx 5800, then I hear the hot cam increases the red line to approx 6300? is the previous statement correct? do I need a new tach that will tach 6300? how are the rest of you set up? I've got a 92 stock computer, and and automatic. the engine isn't built up yet, so I don't know how it will so with the rev limiter...not to mention, I think the auto shifts at 5400... am I looking at a lot of unused power? Thanks?
Melting Slicks
Joined: May 2001
Posts: 2,143
Likes: 7
From: San Diego CA
Re: Lt1 rev limiter vs. hotcam red line? (R Cook 92)
Very bad things happen to a stock bottom end LT1 when rev'd above 6200 and almost immediately.
If you haven't upgraded the valve train to handle the high rev's you could end up floating a valve right into a piston (also a bad thing).
The GM tach is notoriously inaccurate. The tach may show you shifting at 5400, but you could be anywhere from 5200 to 5600.
What exactly are you trying to accomplish and with what are you trying to accomplish it?
If you haven't upgraded the valve train to handle the high rev's you could end up floating a valve right into a piston (also a bad thing).
The GM tach is notoriously inaccurate. The tach may show you shifting at 5400, but you could be anywhere from 5200 to 5600.
What exactly are you trying to accomplish and with what are you trying to accomplish it?
Thread Starter
Instructor
Joined: Mar 2001
Posts: 181
Likes: 0
From: Swansea, IL, USA
Re: Lt1 rev limiter vs. hotcam red line? (R Cook 92)
The motor is out of the car, the entire thing is being rebuilt. the hot cam kit is really the only BIG upgrade... I am rebiulding the bottom end, but I had planned on stock stuff, I need to get it to the machine shop before I decide if I will need to bore it... I just want to hear that I won't need a chip... or a tach. Will I still make plenty more power than my stock LT1 on the cam and rr without a higher rev limiter... I drive it daily, so I have to keep the motor reliable...
