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TPS interchangeability

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Old 02-20-2023, 01:42 PM
  #1  
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Car: 1955 Chevy Belair
Engine: 87 L98 from Corvette converted SD
Transmission: 700R4
Axle/Gears: 3.08 POSI
TPS interchangeability

Thanks for accepting me.
Can I put a 87 TPS on a 92 L98? I need to adjust it. The lowest voltage I can get is.72.

Last edited by MikeKy; 02-20-2023 at 01:46 PM.
Old 02-20-2023, 01:58 PM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: TPS interchangeability

Yes you can, .72 will work. Was iac adjusted before tps ?
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MikeKy (02-24-2023)
Old 02-20-2023, 02:01 PM
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Car: 1955 Chevy Belair
Engine: 87 L98 from Corvette converted SD
Transmission: 700R4
Axle/Gears: 3.08 POSI
Re: TPS interchangeability

It was when I first put the car together (2004), but I haven't done anything to it since.
Old 02-21-2023, 09:29 AM
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Re: TPS interchangeability

The problem with adjusting an IAC is that as soon as it is plugged in, the ECM will "adjust" it to whatever it wants. Adjusting throttle minimum position is another matter altogether. We knew what you meant.

TP is correct that with the 1227730 ECM anything between 0.24 and 0.94V is suitable since the ECM will assume the "zero" position upon ignition power-up.
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MikeKy (02-21-2023)
Old 02-21-2023, 11:08 AM
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Car: 1955 Chevy Belair
Engine: 87 L98 from Corvette converted SD
Transmission: 700R4
Axle/Gears: 3.08 POSI
Re: TPS interchangeability

Thank you!
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