Hey guys. Well, my car is pretty much sold and I will have a decent chunk of change to put a Procharger kit on my Dad's 1991 L98. Just curious how the installation is on the kit. I'd like to put it on myself and then trailer it to the shop to get the tune and refine it all. Also, what other supporting mods should I be looking into?

Thanks,

Justin

 

Im not sure how the procharger l98 kit is, but the procharger lt1 kit had many problems.

Procharger head units are the best out there(a d1sc will serve you well), but all the supporting hardware (brackets, fmu, etc.) leave a lot to be desired.

Do yourself a favor and talk with greg carrol at blowerworks. He knows these in and out.

He will get you the right parts the first time around vs. Spending your money on the procharger kit and then buying all the parts you need(to fix the procharger kits inadequacies). Get the correct parts first.

Just to give a quick example:

Procharger kit has a mechanical air to air intercooler.. Its very restrictive. I removed it, replaced w straight pipe/ methanol injection, and immediately picked up 3.5 psi boost while still running the exact same blower pulley!

Also, the fmu and booster pump (in the procharger kits) aren't the best way to make the power. Put a big fuel pump in the tank, big fuel injectors, and tune the power enrichment vs. Rpm tables to add the fuel you need as boost builds (use an ostrich on your chip-based car). You will also make more power this way vs. an FMU. FMU = big band aid.

Finally, I got so much belt slip that I only made 6 psi boost after my belt broke in. With greg's bracket design, Im making so much boost (11 to 12 psi) im worrying about it being too much for my stock bottom end! (maybe I need a bigger pulley!)

 

installed a procharger lt1(p1sc) intercooled setup on my 95,didnt have to purchase anything else,makes 8# of boost,have had no belt slippage issues,drive it daily.i did talk to greg@blowerworks after my install about additional tuning,he said thier is nothing wrong with a correctly functioning fmu or air to air intercooler,just monitor fuel psi to keep an eye on if something goes wrong.also my 93 camaro goes 10:40 with a pump gas 355 @ a p600b and small intercooler.dizwiz24 i was looking for gregs website and cant seem to find it now,is he still in buisness,very nice and helpful he talked to me for over an hour about s/c.

 

I have to completely agree with dizwiz24 as his experience mirrors mine with the Procharger. But I have an L98.

To be honest, if I would have known all of this before I started down the Procharger road, I would have been better off just stroking my engine and be done with it.

 

Gregs website is located @ blowerworks.net. I think both of you are correct in your statements as I have gone from a stock LT-1 with a P-1SC Procharger @ 5-6PSI to a 355 heavily modified LT-1 @ 10PSI. Although, I also experienced some belt slip. So, I took some great advice from dizwiz24 who has learned from experience. I/m still running the intercooler and in the process of tuning / ditching the FMU. I would definitely recommend, if you do any upgrades, switching to a 8-rib ATI super dampener and Gregs bracketry. Well worth the cost and enhances reliability. Although if I did it all over again I would upgrade the drivetrain and switch to forged engine internals before I added a supercharger.

1993 Coupe (white), AUTO, LT-1 355, P-1SC Procharger w/intercooler

 

Thanks guys

 

I'm resurrecting this thread. I'm putting an MSD opti and switching over to a Meziere water pump as we speak. Intercooled kit as well. Methanol injected as well. I'm also on a stock bottom end but it's a '94 LT1. 75K miles and the oil stays full and clear. I may pull the intercooler after reading this.. It had a 3 70 pulley on it, I just put a 3 40- That intercooler could play a role in slip ESPECIALLY if 3 more psi... WoW. Just get rubber elbows from autozone and pipe it in? I'm going to 45# injectors and probably E85. Just replaced both pumps. both 300+lph.

 

Hi

The blower kits come with everything you need to install the blower and drive the car, i do recommend talking to blower works.
They can provide custom chips to tackle the ignition advance problems and remove the injector limits, for use in a blown C4 for better performance and reliability. You also need to use premium gas with a boosted engine, even with water injection.

I have been running a Vortec blower in my 85 for many years, very reliable with the exception on the auto trans. The T700 auto trans is a weak point even when you spend a lot on them.

How many miles had the 91 done? don't put a blower on a high mile engine. If you keep to 6 or 8 psi boost, you will be ok with the standard engine if it doesn't have too many miles on it.

I had been running 8 psi boost via intercooler for around 11 years, no issue with belt slip or abnormal belt wear. Now running 12 psi boost which is testing the limits of the serpentine belt, has been 2 or 3 years and going strong.

 

 

My 92 has a stage VI system from Greg at Blowerworks. original owner had it put on years ago and second owner re did the engine to 383 monster and added the Supercharger back on. None of us have had problem 1 with the system,belts,anything and Greg is a world of information. Mine has methanol injection system also and extremely reliable I would recommend talking to Greg for advice for you and your car . Good luck