Procharger lt1 considerations

[bentrod]

I recently came across a smoking deal on a Procharger + intercooler kit for an LT1. Being new to efi forced induction, I'm looking for some advice/help/options regarding the matter.

Here is some info about the motor I plan to put the kit on:
1. 1993 stock 2 bolt LT1 with the following additions
a. custom headers complete with EGR.
b. injectors are 24lb (upgraded from stock 22lb because they were cheaper)
c. braized a fitting on the oil pan incase I ever go into a situation like this.
2. 60k miles on motor.


Here are the goals:
1. daily driving is key (reliability and longitivity)
2. bang for the buck factor (I'm not spending $$$$ for a billet crank/rods)
3. not looking for a huge upgrade in performance (I would be very happy with 350 rwhp)
4. not looking for tons of maintenence, like every 6 months rebuilding the supercharger.

questions that I'm thinking about:
1. How will boost work with the EGR? I can imagine once the manifold is presurized and the valve opens, it will just blow out into the exhaust (header).
2. I hear mixed reviews on the stock bottom end with boost. some people say it will explode with 3lbs of boost, where some say they run 8+psi no problem. Theres one guy who claims he's pushing 500++ rwhp on a stock 2bolt lt1...
3. What would be a good computer/sensors to upgrade to that can make decisions with this type of set up?
4. what fuel should I be running? Stock compression is 9.0:1


Any thoughts or suggestions would be apprisheated.

[steveo]

so this is an iron headed engine?

7-8psi with a good tune on the bottom end should be ok unless its a high mileage engine. even 6psi should meet your power goals safely.

the stock hypereutectic pistons will just shatter if you make a substantial tuning error under a decent amount of boost. start very low with timing and work from there.

the egr isn't for high MAP use anyway, so when you're under boost, the egr solenoid should be closed. under low boost it probably wont have enough pressure to pop the egr open. but then again, if it was my car and i was running a bunch o boost, i'd just delete the egr entirely.

the stock computer will kinda handle it, lots of tuning involved, but basically swap the map sensor to a 2 bar unit and tune any map related tables back?

what fuel? 91 octane on a conservative tune will be fine. again, depends how far you want to push it i guess

injectors? i betcha on conservative boost they might even be ok as long as you set 'bout a 5500rpm fuel cut.

[bentrod]

hi steveo thanks for your valueable input.

It has aluminium heads, motor is from a 1993 camaro (banked injection not sequential)

Do you have a suggestion of a timing table from a supercharged engine I could look at? I'm just trying to get familar with numbers.

Would a map sensor from a typhoon or t-type be the correct way to go?

I may consider deleting the EGR. I go though state inspection though and would like it to pass, not sure if deleting it will give me issues.

Also from your personal oponion from experience or word of mouth even, do you believe these procharger units are of decent quality or have you came across any serious design flaws?

thanks for your time

[steveo]

stock static compression is 10.4-10.5:1, that's why I asked about the heads.

no personal experience with prochargers

[lionelhutz]

If you want to get tricky then put a block off plate between the EGR tube from the manifold to the intake. Then, disable the EGR in the code. It will visually appear installed and not throw any codes.