'04 Venture 3.4 into '96 Grand Prix 3.1

[WymanV]

Excellent. Thanks Taylor!

Got it in there last night and everything but the exhaust done on the bottom. Hope to get the top done today and maybe-just-maybe fire it up.


Ken

[3100 MPFI]

K. The crank position sensor under the harmonic balancer is the SAME, so no issues there.

[3100 MPFI]

Since your car is a 1996 already, the EGR's are the same, just mounted differently. You can use the EGR that came with the engine, and just plug it right in.

You will most likely want to use the O2 sensor that came on your car (not on the engine). I don't know about calibration issues, but if that newer one is not calibrated to the 1996 PCM like the knock sensor is, but if it is, and you don't swap it, then you might have issues down the road.

The crank position sensors should be the same, but I will check for you to be sure.

One more sensor that you will want to change out is the KNOCK SENSOR. You want to use a knock sensor that is the same year and engine as the PCM. If you are using a 1996 3100 PCM, then you want to use a 1996 3100 knock sensor.

If you need any 1996 W-body wiring diagrams, I am doing an OBD2 conversion to my 1988 Cutlass Supreme, so I have the books here.

[nixtux]

This is only suggestion, but some of the Haynes manuals have wiring diagrams toward the end. Perhaps that may yield results regarding the wires. Otherwise I'm not sure.

However I'm in the process of doing a similar swap on a 95' Cutlass Supreme so I'd be interested to see/hear the end result.

Hi gents-new to the site and new to the project.

I'm in the process of dropping a 2004 Chevy Venture 3.4 (33K miles, $850, can't complain) into my 96 Grand Prix-3.1, 189,026 miles and baked head gasket. I've been referencing 3400swap.com on this and everything is going pretty smoothly so far. However (of course) I have a couple "issues"...

First is with the EGR system. korbendallas68 recommends modifying the old one off the 3.1 by installing a plate, but the thing is the new one has the same plug. Do I still have to use the old unit, or will this one work? I'm in the Republik of California so emissions is an issue.

Second is the O2 sensor. They are both 4 wire sensors and I'd like to use the newer one but 1.-the plug is different and 2. the wire colors are different. The old one is purple, white, brown, brown and the newer one is blue, white, black, black. The wire ends are the same but the plastic housing is different. Since I'm doing this on the cheap, it would be feasable for me to switch the plastic ends if the sensor is compatible, but do the wires coincine-purple=blue, brown=black, etc.?

And another one comes to mind-the crankshaft sensor has the same wire ends on both. Any real need to pull my harmonic balancer to change that?

Thanks for any help you guys can give me with this. I'd love to get this thing running this weekend so I can get it to the exhaust shop Monday. I've been driving the GFs Saturn for almost a month now and it doesn't compare...

Ken

[WymanV]

Hi gents-new to the site and new to the project.

I'm in the process of dropping a 2004 Chevy Venture 3.4 (33K miles, $850, can't complain) into my 96 Grand Prix-3.1, 189,026 miles and baked head gasket. I've been referencing 3400swap.com on this and everything is going pretty smoothly so far. However (of course) I have a couple "issues"...

First is with the EGR system. korbendallas68 recommends modifying the old one off the 3.1 by installing a plate, but the thing is the new one has the same plug. Do I still have to use the old unit, or will this one work? I'm in the Republik of California so emissions is an issue.

Second is the O2 sensor. They are both 4 wire sensors and I'd like to use the newer one but 1.-the plug is different and 2. the wire colors are different. The old one is purple, white, brown, brown and the newer one is blue, white, black, black. The wire ends are the same but the plastic housing is different. Since I'm doing this on the cheap, it would be feasable for me to switch the plastic ends if the sensor is compatible, but do the wires coincine-purple=blue, brown=black, etc.?

And another one comes to mind-the crankshaft sensor has the same wire ends on both. Any real need to pull my harmonic balancer to change that?

Thanks for any help you guys can give me with this. I'd love to get this thing running this weekend so I can get it to the exhaust shop Monday. I've been driving the GFs Saturn for almost a month now and it doesn't compare...

Ken