'85 L69 T5 ECM and PROM
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Member
Joined: Dec 2003
Posts: 131
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From: Frederick, CO
Car: 85 SS
Engine: 305 L69
Transmission: 2004R
Axle/Gears: 7.625, 3.73
'85 L69 T5 ECM and PROM
When swapping to a T5 from an Automatic what is the difference in the T5 PROM, is it something to do with idle control when stopping? Does anyone have the ECM and PROM #'s for the '85 T5's?
Thanks,
Larry.
Thanks,
Larry.
Last edited by whitess; Jun 8, 2008 at 05:18 PM.
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Joined: Aug 1999
Posts: 2,842
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From: Rowlett, TX
Car: 1988 GTA
Engine: 5.0 TPI
Transmission: T5
Axle/Gears: 9 Bolt, 3.45
Re: '85 L69 T5 ECM and PROM
The idle speed will probably be lower, since the car doesn't have to be put in drive. I'm not too familiar with the L69 ECM, but I know it is on the TPI cars. Automatics will idle around 800 in neutral, manual trans around 600. Also, the T5 ECM won't have the torque converter lockup function enabled. The only other thing I can think of is maybe the shift light.
Thread Starter
Member
Joined: Dec 2003
Posts: 131
Likes: 0
From: Frederick, CO
Car: 85 SS
Engine: 305 L69
Transmission: 2004R
Axle/Gears: 7.625, 3.73
Re: '85 L69 T5 ECM and PROM
Thanks Ward. I'm planning to do the T5 swap in my Monte next year and I wanted to be sure I had "all the bases covered" when I did it.
Larry.
Larry.
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