One of the most common questions in the 3800 market is "Can I bolt a GTP supercharger onto my GT (L36) engine. The short answer is no. The only things the non supercharged and supercharged 3800's have in common are the block and crank. Everything else is different. Still a few determined individuals have done it. This is the list of components you used to need: L67 idler pulleys, L67 idler stand off, L67 throttle body, L67 injectors, custom PCM, GTP balancer, L67 MAP sensor, L67 heads, L67 fuel rail, 2 head gaskets, head studs, MAP adaptor harness, bypass valve wiring, vacuum lines, brake booster line, supercharger gasket, throttle body gasket, lower intake gasket, lower intake O-rings, supercharger belt, GTP valve covers, GTP valve cover gaskets, coil pack bracket for 99+ cars, M90 from an L67, lower intake from an L67, M90 bolts, and new rocker bolts. You'll also need a torque wrench, 3800 balancer pulley, and very powerful airgun to remove the crank bolt.
The new ZZP L36 Supercharger kit allows you to bolt a GM Gen 3 Eaton M90 supercharger to your Series 2 3800 non-supercharged engine with out the need for all the traditional components and without the extensive labor or special tools. The SS kit also allows you to run boost more efficiently on the high compression engine because of the blower port work matched with a machined intake manifold. You'll have room for easy upgrades with the SS kit as well because the Supercharger comes with a modular pulley system. The blowers are used cores with
any worn parts replaced, and guaranteed for 1 year.
We expect the L36 S/C kit to be one of the most popular items ZZPerformance has ever offered. Because of the large number of differences from kit to kit which vary by car model as well as year we DO NOT accept phone orders and WILL NOT be giving sales support over the phone. Please email all questions to firstname.lastname@example.org or post on ClubGP.com in the L36 message forum.
This kit will not fit the 2004+ Grand Prix NA cars because they are drive-by-wire.
Stage 1 kit: comes with a 4.2" pulley intended for stock L36 injectors.
Stage 2 kit: comes with a 3.8" pulley and 33# injectors setup specifically for your year car, so no cutting of your factory injector harness is required.
The PCM file that comes with the Supercharger kit comes set for the factory L36 throttlebody and MAP sensor, if you have a diffierent year TB or a Supercharged 2 bar MAP that you are going to use, please email Tim@ZZPerformance.com so he can tweak the PCM for your specific setup.
1. How long does this kit take to install?
Complete install takes 2-6 hours if doing it for your first time. You will need metric and american socket sets. SS M90 instructions
2. What cars will this work on?
Most FWD Series 2 3800 with an L36. We've tested on Grand Prix, Impala, Bonneville and Monte Carlo. Gen 5 kits will be available shortly for use with drive by wire throttle bodies and newer cars.
3. Won't I have KR? Will my engine blow up?
The kit comes shipped with a very large pulley, cold spark plugs, reprogrammed PCM and a ported blower. It will make just under 5 pounds of boost. As long as you run premium gas your car will be ok.
4. What mods can I use with this kit?
Any mods that you would normally use for a Series 2 3800, except the HV insert.
5. What throttle bodies can I run?
The kit is setup to use a GT throttle body, but running a stock L67 or ZZP Stage 1 L67 throttlebody would be beneficial. The PCMs MAF chart needs to match whatever throttlebody you are going to run.
6. What cam should I or can I run?
Our GT line of cams will work but we recommend our VS, XP, or NIC cam for optimal performance. With GTP injectors and our VS cam we recommend our 3.5" SS pulley. With GTP injectors and our XP or NIC cam the 3.25" SS works well.
7. What do I have to do to run more boost?
You'll need larger injectors and PCM tuning and additional supporting mods. To run smaller than a 4.2" pulley you would need 33#, 34#, or 42# pound injectors work well. For supporting mods, we recommend the basic bolt ons like ZZP downpipe, 180 Thermostat, ZZP or Wizair CAI, Powerlog and Ported rear manifold-or-headers, Cam-or-Rockers, and S.S. Intercooler.
8. Will my car run any different?
No. It will idle the same and get the same fuel economy it did before installation of the kit.
9. What will the gains be?
On a stock L36 look for gains of 60+HP and 60+ ft/lbs of torque. If your GT is modified the gains will be larger. Because of the higher compression and longer rods the L36 will make 5% more HP and torque than an L67 with the same amount of boost. Gains at the track will typically be 1/2 to a full second from where you currently are. Traction and whether you run race gas or Torco will greatly affect times. Click here for typical before and after dyno .
10. Do I need any other parts?
You will need to do an oil change BEFORE you start the car and add some coolant. If 99+ year is selected, it will come with the cast iron coil pack bracket.
11. Will I get belt slip?
No. The kit has been tested down to a 3.2" pulley with 12 pounds of boost with the accessory belt being the only drive. ZZPerformance modular pulleys grip better than anything on the market thanks to their narrowed V-groove angle. The included idler pulley increases belt wrap for better grip.
12. Will my PCM work with this kit?
No, but the kit will come with a ZZP 1.0 file setup specifically for your setup. Email Tim@ZZPerformance.com with your invoice # and any specific mods that could have an effect on the file that we will send you.
13. Can I run an intercooler with this kit?
Yes. Our Short Stack intercoolers have injector boss clearance and work with this kit. However our full size stage 2 and 3 intercoolers will not work. Since you already will have ZZP fuel rails/logs, all you would need is the basic intercooler kit, no additional injector spacers will be needed.
14. Will my transmission hold up?
The internals of the non-HD transmission are nearly identical to the HD version. The differential is weaker but that is only stressed during launching. Any modification that increases horsepower will increase the stress on transmission components but the stock transmission is fine to around 300 crank HP. The life of your transmission will be affected more by how you drive than by the installation of this kit.
15. How much do you charge to install?
$250-$300 depending on the car.
16. What airbox & intake will work with this kit?
The same intake setup you have now will work.
17. Will my engine hold up to a supercharger?
In stock form the L36 makes 200 HP. We have tested numerous stock L36 engines to over 500 HP without failure. Yes, it will hold up.
18. Do I need a pulley puller tool?
No. The blower will come with the modular hub pressed on the snout. Pulley changed will only require an allen tool.
19. Has anyone installed this kit yet?
Yes, we have installed a few on test cars and shipped many kits. Daniel Schmidt is a customer currenty running 12's with it and very famiar with it's installation. He can be emailed at: Courtesy_automotive_service@msn.com (has lower case lines inbetween each word)
The last customer to dyno (Josh in MI) made over 250WHP with a 4.0" pulley!
Click here for results on a Regal.
275WHP http://videos.streetfire.net/video/2001-grand-prix-GT-DYNP_208097.htm Mods are ZZP m90 KIT. headers. 1.9 rockers, 3.6 pulley
Nick Perri ran 13.1@103 on 93 octane with a 3.4" pulley. His full build can be found in our member's car section.
20. Do I have to upgrade my fuel system?
The stock OEM fuel pump is good down to a 3.5" pulley. To run a 3.25" you'll need the Alternator voltage booster and fuel pump rewire. However if you have a Autozone/Napa/Advance etc, china pump it will be maxed on the Stage 1 kit.