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ecm question?

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Old Jul 22, 2010 | 10:18 PM
  #1  
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From: Underhill,vt
Car: 98 camaro ss, 98 grand cherokee 5sp
Engine: 5.7 ls1, 4.0 sixxer
Transmission: T56, ax15 swapped
Axle/Gears: 3.42, 3.73
ecm question?

ive got an ecm # 1227165, i know this is 86-87, as it has the ninth inejector. It has label number 16087373. How do i tell if this is a 305 or 350 tpi ecm? any help is much appreciated
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Old Jul 23, 2010 | 07:37 AM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: ecm question?

Originally Posted by 9manastacio
ive got an ecm # 1227165, i know this is 86-87, as it has the ninth inejector. It has label number 16087373. How do i tell if this is a 305 or 350 tpi ecm? any help is much appreciated
It is the MEMCAL inside of the ECM that defines what it was used for. The ECM itself was used on TPI cars along with TBI trucks.

Get the 4-letter code (BCC) off the PROM, with that we can tell what the application was for that particular calibration.

RBob.
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Old Jul 23, 2010 | 07:32 PM
  #3  
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From: Underhill,vt
Car: 98 camaro ss, 98 grand cherokee 5sp
Engine: 5.7 ls1, 4.0 sixxer
Transmission: T56, ax15 swapped
Axle/Gears: 3.42, 3.73
Re: ecm question?

the numbers off the prom 1088 acxs
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Old Jul 23, 2010 | 10:11 PM
  #4  
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: ecm question?

Originally Posted by 9manastacio
the numbers off the prom 1088 acxs
ACXS is an '87 LB9 auto calibration.

RBob.
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Old Jul 25, 2010 | 04:06 AM
  #5  
Chevy86 IROC-Z's Avatar
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From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: ecm question?

Yup, I agree with RBob.
This is the info that I found....

1987 305 (5.0L) "F" body Camaro-Firebird-Trans Am

Prom BCC = ACXS
Prom Code = 1088
Scan ID = 0791
Trans = Auto
Gear Ratio = 2.73
Emissions = Fed
Body = F

Last edited by Chevy86 IROC-Z; Jul 25, 2010 at 04:13 AM.
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