7730 controlling Crossfire?
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Joined: Mar 2013
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From: pardeeville, wi
Car: 1991 Pontiac Firebird convertible
Engine: 3.1 soon to be 3.4/3100
Transmission: 700r4
Axle/Gears: original gears, for now
7730 controlling Crossfire?
I've got to pick the brains of the smart guys here, I recently toasted tge v6 in my Camaro and I was gifted a '82 Crossfire engine. Can I run that with the 7730 in the car and S-AUJP?
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Car: '18 Chev Camaro SS 1LE
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
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Re: 7730 controlling Crossfire?
I didn’t think you can drive the 2 injectors just 1, might look into a 747
Thread Starter
Member

Joined: Mar 2013
Posts: 361
Likes: 1
From: pardeeville, wi
Car: 1991 Pontiac Firebird convertible
Engine: 3.1 soon to be 3.4/3100
Transmission: 700r4
Axle/Gears: original gears, for now
Joined: Dec 2004
Posts: 16,736
Likes: 994
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 7730 controlling Crossfire?
the $3E 730 was used with 1987-1988 2.0L L4 TBI single injector. But its driver can’t do 2 tbi injectors.i had a discussion about this topic years ago with rbob. Its not possible with hardware and software on the 730.
Last edited by Tuned Performance; Jun 10, 2025 at 09:31 PM.
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From: Hurst, Texas
Car: 1983 G20 Chevy
Engine: 305 TPI
Transmission: 4L60
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Re: 7730 controlling Crossfire?
Joined: Dec 2004
Posts: 16,736
Likes: 994
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 7730 controlling Crossfire?
Hmm rbob made is seem like it couldn’t be done
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Re: 7730 controlling Crossfire?
The 1228746 is a good choice. It's designed to run 2 injectors and supports all inputs required for the crossfire plus you can add IAT. Supports all outputs except the hood louver. I've been using one in my crossfire for over 10 years.
Joined: Mar 2006
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: 7730 controlling Crossfire?
I've used a '7747 on a Crossfire Corvette, and my wife's 71 C10 is using a '7427 to run the Crossfire and 4L60E swap.
The '7730 COULD be used, but it's not ideal, and would be in uncharted or very minimally treaded territory which would me you'd be mostly on your own to figure out all of the details to getting it to work right.
The '7730 COULD be used, but it's not ideal, and would be in uncharted or very minimally treaded territory which would me you'd be mostly on your own to figure out all of the details to getting it to work right.
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From: Arizona
Car: 82 Corvette - CFI
Engine: 383 - Renegade, AFR 195, Bullet cam
Transmission: 700R4 - 3,200 Yank TC
Axle/Gears: 3.31
Re: 7730 controlling Crossfire?
I've used a '7747 on a Crossfire Corvette, and my wife's 71 C10 is using a '7427 to run the Crossfire and 4L60E swap.
The '7730 COULD be used, but it's not ideal, and would be in uncharted or very minimally treaded territory which would me you'd be mostly on your own to figure out all of the details to getting it to work right.
The '7730 COULD be used, but it's not ideal, and would be in uncharted or very minimally treaded territory which would me you'd be mostly on your own to figure out all of the details to getting it to work right.
Joined: Mar 2006
Posts: 4,367
Likes: 15
Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: 7730 controlling Crossfire?
The 7427 PCM was a complete EFI swap, so I just used the pinout as it was for that PCM.
The '7747 was just stock programming for a similarly equipped truck, 350 auto IIRC. My wife's truck is currently running on stock programming but I do have a modified MEMCAL that was installed, I removed it for some diagnostics, that turned out to be something mechanical, and just haven't swapped the modified one back in. I use Moates products when tuning OBD1 GM EFI.
Thread Starter
Member

Joined: Mar 2013
Posts: 361
Likes: 1
From: pardeeville, wi
Car: 1991 Pontiac Firebird convertible
Engine: 3.1 soon to be 3.4/3100
Transmission: 700r4
Axle/Gears: original gears, for now
Re: 7730 controlling Crossfire?
The original Crossfire ECM uses edge card connectors, so changing the connectors was needed.
The 7427 PCM was a complete EFI swap, so I just used the pinout as it was for that PCM.
The '7747 was just stock programming for a similarly equipped truck, 350 auto IIRC. My wife's truck is currently running on stock programming but I do have a modified MEMCAL that was installed, I removed it for some diagnostics, that turned out to be something mechanical, and just haven't swapped the modified one back in. I use Moates products when tuning OBD1 GM EFI.
The 7427 PCM was a complete EFI swap, so I just used the pinout as it was for that PCM.
The '7747 was just stock programming for a similarly equipped truck, 350 auto IIRC. My wife's truck is currently running on stock programming but I do have a modified MEMCAL that was installed, I removed it for some diagnostics, that turned out to be something mechanical, and just haven't swapped the modified one back in. I use Moates products when tuning OBD1 GM EFI.
Joined: Dec 2004
Posts: 16,736
Likes: 994
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 7730 controlling Crossfire?
The 747 can use a g2 to convert a 2732 24 pin to 28 pin chip.
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