Quick Y-body question.
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Senior Member
Joined: Jul 1999
Posts: 786
Likes: 2
From: Guilford, NY
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700R4 w/TransGo
Axle/Gears: BW 9-bolt w/3.73s
Quick Y-body question.
Yea, i know, not Camaro, but Corvette. I am looking at 1990 6-speed car. Just had some basic Q's what i am getting into. I am thinking it is a SD car, with the 7730 ECM. I been using 29C256 chips in my IROC, so i was just wondering if they would work in the new Vette? Obviously i would need a cal ID, and a new memcal adaptor. I havent done any chips in over a year, due to other priorities. Since i am such an expert
at a MASS AIR tuned car, now interested in tuning a SD car. Kinda looking forward to it!
Thanks,
at a MASS AIR tuned car, now interested in tuning a SD car. Kinda looking forward to it!Thanks,
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Quick Y-body question.
It would be a 1227727 using a 27c256 eprom $8d definition.
Thread Starter
Senior Member
Joined: Jul 1999
Posts: 786
Likes: 2
From: Guilford, NY
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700R4 w/TransGo
Axle/Gears: BW 9-bolt w/3.73s
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Quick Y-body question.
if you have means to program it than yes it will work on a piggyback, you should invest in a few flash eeproms.
Last edited by Tuned Performance; Mar 21, 2013 at 07:53 PM.
Joined: Dec 2004
Posts: 16,754
Likes: 996
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
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Joined: Mar 2002
Posts: 18,432
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Quick Y-body question.
The '7727 ECM is the same as the '7730 ECM, with the exception of different harness connectors and being shoved into a weather proof under hood case.
Both the '90 - '91 y-body and the '90 - '92 f-body (w/TPI) run the $8D mask. One in the '7727 and the other in the '7730.
RBob.
Both the '90 - '91 y-body and the '90 - '92 f-body (w/TPI) run the $8D mask. One in the '7727 and the other in the '7730.
RBob.
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3.8TransAM
NW Indiana and South Chicago Suburb
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Sep 27, 2015 08:37 PM








the 90-91 corvette used a gm p4 ecm with the service numbers 1227727, 16197128 ,16198260. 
