0-60 in my newly-swapped L67 Grand Am

[Automosity]

http://www.youtube.com/watch?v=7vmDm7SUjSE

The Car: 1997 Grand Am GT, 2-door
Engine: 3800 series II Supercharged
Transmission: Automatic
Mods: Cold Air Intake, custom Exhaust

To put it in perspective, with the old 3.1L V6, the best 0-60 time I could ever get was 9 seconds. It's MUCH less now. In the vid, I was using my stock wheels, which accounts for the loss of traction. When I get my much wider 18"s on, traction should be easier to control.

p.s. I've got a poor front O2 sensor, hence the check engine light.
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97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

I got a few questions for you as I am in the process of doing this.

I guess my first question would be, are you piggy backing 2 PCMs, or are you just running the L67 PCM?

Im going to PM you on youtube as well just incase you dont get this.
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

Hello! To answer your question; The Grand Am will run just fine with only the L67 PCM, however some things will not work unless you piggyback the 2 PCMs. At the moment, I am only running the L67 PCM, which is fine. However, the tach, ABS, Traction Control, and Coolant temp indicator will not work unless I piggyback. I'm going to attempt a piggyback in the future to finish off the swap when I get some time. However, this will be my first time doing a PCM piggyback, so if you go for it before I do, I'd like to know how it goes.

[CraiGM]

Well the first question coming to mind is how are powering the fuel delivery? You wire th L67 PCM to that as well? I assume your using the L67 fuel pump.
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

The GA fuel pump is controlled by the pcm via pump relay control pin. The L67 pcm has 2 pins for the fuel pump; a Relay Control pin and a Pump Speed pin. To power the fuel pump on the Grand Am, you just need to use the Relay Control pin.
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97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

So your telling me your running the GA fuel pump? Holy crap.

Did you keep your A/C? If so, how did you go about that? I would assume your using the L67 compressor to run the belt...
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

Yep. The stock ga fuel pump works fine with the L67. I was unsure about this before the swap, too. I figured, since I have a PowerTuner, I'd just do a couple scans and if I wasn't getting enough fuel, I'd swap the pump. Turns out it works fine for the mostly stock L67, so I left it alone for now to save a few bucks. I'm starting to mod, so I may need a new pump down the road. I imagine I'll still be fine when I get the 3.4" pulley on this week, but time will tell.

About the AC... I decided to just delete it to save a little weight and space, by using a AC Delete pulley from NAPA and removing everything else from the engine bay regarding AC. I live in Indiana, so AC isn't a necessity. If I get too hot, I simply roll all the windows down and drive faster.
_________________
97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

Well I guess the powertuner wouldnt lie. Thats impressive for a GA stock fuel pump. Taking up close to double the power in the engine.

Im having a toss up on keeping or removing the air conditioning. I live in AZ so, yeah haha. BUT I know for me this will not be a daily driven car. But more than likely, Im going to try and keep it.

I assume you have to use the L67 fuse box? Where did you mount that sucker?

Do you have a seperate harness plugin thing? You know the plugin under the steering column (for diagnosis & emissions) Do you have a seperate one setup for the L67? Id imagine you have to keep the GAs for emissions...
_________________

http://WWW.AZGMPERFORMANCE.COM

[Automosity]

Yeah, I could see why you'd want your ac. AZ isn't near as cool as Indiana most of the time.

I used the GA fusebox and as much of the engine harness as possible. The injector connectors are the same, so just lengthen the wires to reach. Same with most of the other connectors. If I remember correctly, there were 2 wires which needed added to the fusebox on the Ignition fuse. The BBV, tranny positive wire, and Ignition module.

You'll notice the 4T65E-HD connector has many more wires than the GA's trans. I solved this by removing the trans connector wires from the harness and building an entire new one for the 65. The same went for the Ignition module. I just cut out the old connectors, and built a new harness for the L67.

That leaves 2 wires not included on the ga harness which need to be routed to the pcm. The BBV, which the GA obviously didn't have to begin with. And rear knock sensor, since the GA only used one originally.

[CraiGM]

Im not worried at all about anything with the 4T65E since Im going 5speed.

Im definately going to be piggybacking, (want to keep stock guages) and just having the GA PCM act as a BCM. Then use the L67 PCM to run under the hood. Which would require the L67 wire harness, and Im sure the L67 fuse box.

Yes the OBD2 diag plugin thing. Ok, I guess I will need both of those. One to tune the L67, and the original for emissions.

I actually knew the injectors and harness would work. I had L67 injectors on my 4cylinder when it was supercharged lol. Thats besides the point...

I guess the only other thing I can think of at this time is, did you have to modify the stock downpipe to fit it down and passed the steering rack? Did it hit? Or did you go completely custom? Or did it fit like a glove?

Thanks again. I got most of the stuff. L32 motor with GenV, 5speed trans with reinforced parts (that I need to put together) and still need to get flywheel and clutch kit.
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

5-speed is the way to go! If I ever do it over again, I'll definitely go that route instead. What transmission will you be using?

The downpipe was a challenge. The stock dp will not fit, so a custom one must be made. Basically it's a tight ~90 degree bend straight down to clear the firewall. The steering rack actually sits far enough above the rear manifold outlet, so it's not even an issue. Are you going to be using the stock manifolds or headers? Headers would have to be modified to fit aswell, but would be much easier to install while the engine is out.
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97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

Im using the Isuzu trans from a 98 Cavalier 2200 motor. Wont handle the torque, so I ordered a ANOTHER complete transmission from a 93 Geo Storm. It has one piece synchros, and machined gears and stronger carrier in the differential. I can swap them right over and keep my same axles.

Ok so pretty much a 90 degree bend for a down pipe. I will not be using headers at the momnet. I understand it would be much easier to put them on while the motor is out, but I guess I will just have to learn the hard way.

Not sure what else. Using stock fans?
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

Yeah, still using the stock radiator fan. It throws a code because the L67 pcm wants 2 fans, but the temps run normal. No sign of overheating even when I drive it pretty hard. So, I just deleted the code from the pcm.
_________________
97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

How is the clearance on the front of the motor? Is it a pain to mess with the supercharger belt?

Do you have any engine shot pics? Id really like to see the look and the fitment...
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

Here are a few pics. Excuse all the dirt and grease. The engine bay is filthy.

Overall engine bay shot.


Belt clearance pic. At the narrowest point, there is 1/2" clearance.


The torque strut I made to use instead of dogbones. Yes, that is a 5/8 socket in the pic. It was exactly the right size to use as a spacer, so I went with it.

I plan on taking the bracket back out, cleaning up the edges, and painting it. It's only been on for the past week, and I wanted to make sure it wasn't going to deform under the torque before finishing it. So far so good. I've been beating on the car lately to test out the mounts and so far not a problem with bending or breaking. Previously, I was trying to use a dogbone up top, but the rad support is just way too weak without reinforcement and kept bending. Plus, the dogbone just looked plain ugly.
_________________
97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

Thats what Im talking about. Thanks for replying with the pics. So you decided not to go with the dog bones at all. Interesting.

I would only ask one more picture from you. This is IF its not a problem for you. But Id like to see the downpipe area. Checking out the space from the steering rack/firewall, and angle of the downpipe.

Also, what are you using for exhaust? Is it all custom? Are you running a catalytic converter? I will be, but Im not sure which one to go with. The GA's thats already on the car, or to go buy an aftermarket. It would be cheaper than a new L67 catalytic converter.

Oh yeah! The throttle cable. Did you mock up the stock one to fit to the L67 throttle body? Or did you switch out the whole thing? Im not worried about cruise control, since I dont have it.

And as far as the hood, does it clear? Does it close up just fine? Does your engine cover even touch?
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http://WWW.AZGMPERFORMANCE.COM

[Automosity]

I'll get a pic of the rear manifold/downpipe area next time I get a chance.

As for the exhaust, only the downpipe is custom besides a couple magnaflow mufflers out back that I installed a couple months ago. The rest of the piping is stock for now. I'm hoping to upgrade to 2.5" or 3" when possible. I going catless for now, but in the future I may put on a highflow to get rid of some of the raspiness. I wouldn't use the GAs for fear of it being too restrictive. It's noticably smaller than the L67s converter.

The throttle cable wasn't too bad. The lead end of the cable(not sure what it's really called) needed to be shaved down to fit the bore on the l67 throttle lever. The bracket also had to be bent so the cable had enough clearance to operate fully.

I haven't even hooked up the cruise control cable yet.

The hood closes just fine. No touching whatsoever, which kinda surprised me. I was kinda expecting to have to do a little cutting, but it worked out great. Forget an intercooler, though, if you want to keep the stock hood.
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97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

Good info. Would be nice of you to get the pic of the rear manifold and downpipe when you can.
_________________

http://WWW.AZGMPERFORMANCE.COM

[Automosity]

Here it is. Hope it helps.

_________________
97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]

Thank you so much bro! That does help!

Im currently having trouble taking the transmissions apart. Too many special tools required. Definately need a shop to do this. So I called a few places today to work something out.

Swapping to a stronger carrier and diff with machined gears. And the one piece brass synchros as well.

Next will be the clutch kit, flywheel, then pics lol.
_________________

http://WWW.AZGMPERFORMANCE.COM

[CraiGM]

Well, plans changed. Lets just say getrag is easier... ugh. Just picked one up today.
_________________

http://WWW.AZGMPERFORMANCE.COM

[Automosity]

those things happen. will your stock axles work with the getrag?
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97 Pontiac Grand Am GT
3800 SII SC, white
aesthetics: debadged, blacked out headlights, black 18"x7.5 Falken Torque 5's, Intrax Springs
go fast mods: L67 swap, 3.4", 180* t-stat, , Autolite 104s, CAI, custom exhaust, DHP PowrTuner

[CraiGM]