Why do you have to switch knock sensors when you switch from 305 to 350?
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From: Tennessee
Car: '89 RS
Engine: 9C1 w/ TPI
Transmission: rebuilt 700R4
Why do you have to switch knock sensors when you switch from 305 to 350?
Why do you have to switch the knock sensor? What's the difference, what would be the effect of not switching? Thanks
Joined: Mar 2000
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The word on the street is that they are tuned to different frequencies. Some people have reported using the 305 sensor & module on a 350 with no problems, others have said it gave them fits until they switched to the 350 pieces.
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From: New Yuck
Car: Non F-body :(
Engine: Pontiac 301
Transmission: TH350
Knock "signature" or the frequency of vibration that it makes, is a function of bore size. The sensor and module are tuned for these different frequency signals.
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