Question on ECM Interchangeability
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Joined: Oct 2010
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From: Des Moines, Iowa
Car: 1991 Camaro RS yellow
Engine: was '91 V6, now '89 5.7/355 TPI
Transmission: 4 speed automatic
Axle/Gears: Moser 3.73 with zexel posi
Question on ECM Interchangeability
Are ECMs on all Chevys from 1986 to 1992 the same regardless of engine size and model? Are they interchangeable?
Joined: Dec 2004
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Question on ECM Interchangeability
Only if they have the same service number and correct calibrator.