OLD CCC-Q-Jet stuff
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
OLD CCC-Q-Jet stuff
Well just thought that I would post my luck obtaining the timing table for a 1226455. I was able to read the chip as a 2732A by bending pin 18 up and supplying it with 5VDC from pin 24. I then seperated the full 4K bin into 4 1KB sections, the addressing started at 0C00 on my prom. I was then able to use the table locater in TunerproRT to find the timing table (used the 8079 hack to find its size). Here is the end result, the timing table for a 1983 G20Van 305 4 bbl. Why might you ask, I just converted one of the 190 HP LE9 305s (9.5:1 compression, 14022601 heads, 929 350 camshaft) to TBI and the factory TBI table does not work for that application. You can easily see how much more aggressive the timing table on the factory 305 is when running 14022601 heads.
This was perhaps the biggest twist. This is what I am running for my 305 Vortec TPI in MY 1983 G20 Van. This table was created entirely by me to fit the engine. Strikingly similar.
This was perhaps the biggest twist. This is what I am running for my 305 Vortec TPI in MY 1983 G20 Van. This table was created entirely by me to fit the engine. Strikingly similar.
Last edited by Fast355; 05-25-2008 at 07:29 PM.
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: OLD CCC-Q-Jet stuff
That is the same ECM# as some of the early L69s (83-84 ESC (van had an ESC setup). As long as it uses the 82S181 1Kb prom (no UV window or EEProm) meaning 1 time write, you can use this method to retrieve it. The same Prom was used in the Crossfire cars as well. I have a timing table for a L69 Monte Carlo SS, if you are interested.
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Car: 91 RS
Engine: 305
Transmission: T5
Axle/Gears: 3.73
Re: OLD CCC-Q-Jet stuff
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: OLD CCC-Q-Jet stuff
I am sure both tunes are very conservative. It is also likely that the Car engine needed the timing retarded more at cruise to help keep the catalytic converter hotter to meet the tougher emissions demands. There were BIG emissions requirements differences between a 1983 LD Truck and a 1985 passenger car.
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Car: 82 vet
Engine: 5.7 crossfire
Re: OLD CCC-Q-Jet stuff
very cool.
Are you going to do the entire bin?
Any chance you are going to share your ecu file?
Any chance of doing the crossfire bins?
btw the crossfire works great on a 305 van!
Are you going to do the entire bin?
Any chance you are going to share your ecu file?
Any chance of doing the crossfire bins?
btw the crossfire works great on a 305 van!
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: OLD CCC-Q-Jet stuff
Once again with the crossfire, I don't own one and really haven't even found a .bin to look at.
If I ever make an ECU file it will be public.
Have you run a crossfire on a 305 van? I've seen a FACTORY crossfire fuel injected 350 fullsize van. It had RPO L83 on the factory build sheet.
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: OLD CCC-Q-Jet stuff
I just found a few more CCC Q-Jet proms and the Junkyards gave them to me. CPN came from a 1983 Grand Prix LG4 and CDB which was a 1985 Buick with a LV2 307 Oldsmobile. I have only been able to fully locate the LG4 timing table so far. I think I have the Oldsmobile table, but it looks very strange.
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Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
Axle/Gears: 14 bolt with 3.07 gears
Re: OLD CCC-Q-Jet stuff
I wish I had time to fully dissasemble the bins, but its an assumption made off of the $40 hack (8079 CCC Q-Jet ECM). Also 16-20* of timing at idle is a very normal idle timing for a small block, regardless of the heads that are on it.
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