LJ93Z28GM

I have been around the 4th gen since it basically came out and have seen just about everything for a NA setup. As for forced induction I know very little. just need to know what I am getting into. My boss is giving me his procharger P600, just need to know what else I need to alter to get it to work.

My car sits with just about everything possible deleted off of it so it should go on nice and easy. No ABS, AC, EGR, Air Pump, Cruise.

Car is a 93 which is the only thing I see being a problem since no one local tunes and I have to do mail order.

355 with hotcam kit, headers, 3200 stall, ford 9" 3.70 gear is the major low down on go fast goods.

He is giving me the headunit and brackets, FMU, injectors. No intercoolers since he is retaining those he is going D-1.

My engine is a stock build 30 over with hyperneutectic pistons. Nothing fancy. How much should I push through the engine and not have to worry. It is a daily driver and sees 300 miles a week. Car will have a front mount intercooler and currently car runs cooler than any other LT1 I have seen, does not hit 1/4 temp.

Please let me know what I need. Do i need to pull timing? If so what is the best way. I have a MSD 6AL currently. Do i need a BOV? what pound pulley should i start with. How big of injectors?

I have a walbro inline 255 already. Is more fuel needed.

Any help would be appreciated.

Josh-'04 GTO

Since you're car is comparable to stock (engine wise), I would contact ATI and get the remaining parts needed to get the kit back to "bolt-on ready" status. If I'm not mistaken, the P600B is setup for 7 to 8 pounds of intercooled boost (unless the pulley has been changed). I wouldn't up the boost anymore than that with hypereutectic pistons. Your current fuel pump arrangement should be fine.

LJ93Z28GM

Thanks,
anyone else see that I am missing anything?

01Hawk236

Dyno tune it for sure, as long as the tune is good you will have nothing to worry about it....

FUEL is key, see where the AFR goes on the dyno, then you can replace if necessary.....

As long as you have enough fuel you could push around 10-12psi no problem.....I don't know that head unit very well, but what are the max rpms? Is that hotcam a 112 or 114lsa, if you really want a good blower setup get a tighter lsa split duration cam...The FMIC is also a huge help....

I got a large one on order that I'm going to replace my stock twins with, I run the D-1SC on my stock car My current air intake temps are over 160 degrees, I hope to cut that temp by more than half and be able to pick up some timing

I have a tiny cam in a big cube motor, so I'm making 10-12psi at about 5800-5900 rpms, thats where my peak power is, but I hope to be able to get up to 15-16 psi w/the FMIC addition w/out changing the blower pulley, so we will see.....

LJ93Z28GM

An IL guy.

Yeah I know the key to not blowing it up is timing, fuel and engine temp as well as inlet temps.

I plan to take out the area between the fogs and put a large front mount in place.

I am just wondering what pound injectors I should run, I am shooting for 6 pounds to start with and maybe eight later. He is giving me 30 pound which is what he said it came with. I am not sure my stock 22 pounds (93's) will do the job, or what duty cycle they will be running at. Hotcam LSA is 112. 212,224 at 525 lift if memory serves me correct.

Here are the supercharger specs. http://www.procharger.com/models.shtml
Currently I am shifting around 6500. I will be shifting at closer to 6000 after the blower.

What are most using to retard timing while under boost. Or are you letting the computer try to do it.

I would love to get it dyno tuned but know one local does tuning for 93's or they do tuning but not burning of chips. It gets costly doing a mail order tune and then getting it on a wide band to see how the car reacts. That is one of the reasons they car sits only modded as it is.

01Hawk236

You know who I am....

I would for sure ditch the cam, with the stock pulley setup you will probably see about 4psi.....maybe 5...but you never know with the FMIC...I'm still waiting to see what kind of gains I get from it....

Get some 42lb injectors...

Can't Speed Inc. handle the tune for a 93? or does LT1 edit not cover that? I'm sure one of their "mail order" deals could be close enough for what you need...just need a safe AFR....

Also, whats the current compression on your motor.....

BPS

12 PSI on hypereutectic pistons
your kidding right!

Maximun I'd advise is 6# maybe 8 cooled but not more, most people who have tried more have eventually broken a ring and worse.

if you want to try more then replace the pistons.

96 WS6

Dyno tuning is CRUCIAL. Generally you want between 18-20* timing and more fuel... however, to get the A/F right on you need to go on a dyno, you'd be surprised how necessary it is.

Also, that cam will not work too will with a blower. You want at least 114 lsa and between 8-12* more exhaust duration than intake (which that hotcam has).

Another thing is that even with an FMU (which makes tuning a little bit more tricky) 30# probably won't be enough. Bump up to 42# and they should be all you will need.

LJ93Z28GM

I will likely get some dyno time after I think I have things in order and running right.

As for speed inc they will not see my car. Did not pay attention to tell it was you boss. Talking to another buddy there might be a vette place the does both tuning and dyno near elk grove. Compression is stock. Used to be higher but changed many things.

See what happens I guess. Mabye it will move or maybe it will blow up, time will tell i guess. Should have built a more stout motor back when. Hindsight is a killer

01Hawk236

Yea, PTC is Elk Grove is alright....

I haven't really ever talked to people over there, but I know of a kid who works there.....not sure how their tuning is....

But I know Jim who does the tuning at Speed is top notch.....he knows his **** and thats the bottom line

Billy the Great

i would be very very careful about using PTC for tuning larry. They use BV and we all saw what happened to hp joes car with a bv tune as well as some other local cars. U may want to call flp in naperville, i think they have lt1edit. but i have been very happy with the may my car runs with jim @ speed inc's tuning

LJ93Z28GM

Speed inc does not tune for 93's even if they did my car would not go there.

As for BV one of the most low class guys on tuning, met him and have seen him tune mutiple cars.

As I said my largest problem will likely be tuning.