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Max RPM for 305?

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Old Nov 6, 2002 | 05:01 PM
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usa1racing's Avatar
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Max RPM for 305?

What is the max RPM for a well-maintained 1988 LO3 305?
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Old Nov 6, 2002 | 05:05 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
I think the redline is going to be much higher than what your powerband is, so shifting at the redline would be a waste, assuming the motor is stock.

Just look at your tach, where is the redline.
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Old Nov 6, 2002 | 05:07 PM
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The redline is around 5 I think. However, I am thinking about changing cams and I want to know the max safe rpm for the motor
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Old Nov 6, 2002 | 05:36 PM
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
No more than 5500 for a stock valve train. It will be hard to get that high anyway, though.
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Old Nov 7, 2002 | 12:08 AM
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From: Surrey, BC
The redline is 5000k and I wouldn't push it past 5500 as mentioned above.
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