ECM for 1987 5-speed IROC

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Sep 22, 2001 | 06:32 PM

telstar

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Joined: Jul 2001

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From: Stuart, Fl USA

ECM for 1987 5-speed IROC

Hey guys,

I know the PROM for a 5-speed TPI is different from and auto car.. BUT- is the ECM the same for Auto and 5-speed cars??

Thanks,
Sean

Sep 23, 2001 | 01:30 PM

FlameRedMetallic

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From: Bryan OH.

yes i believe it is.

Sep 30, 2001 | 12:20 AM

dsavio

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From: Rohnert Park, CA

I bought an ecm for my 350 swap in an 84 cc carb 5 speed and the ecm was for an auto i switched the chip from the old one and check engine light lit so i believe the ecms are diffrent too.

Oct 11, 2001 | 10:48 AM

Zepher

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From: Norfolk, VA. USA

Car: 86 Trans Am, 88 Formula

Engine: 95LT4, 305TPI

Transmission: T56, T5

The ECM's are the same on the new cars, 165 and 730 series ECM's, just different proms.
I have a 730 series and just bought a prom for a 90-92 305 5 speed. They listed a few proms for my style ecm in an f-body, one or two were 1990 specific and the others were 90-92, 305 auto, 305 manual, and 350 auto.

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