I may have a chance to pick up a Procharger, 12 rib drive, 8 PSI, 3 core intercooler at a decent price.

My current set up is a 383 with CNC LT4 Heads/INtake, JE Forged pistons (11:1 comp), and a CC306 cam with 114 LSA.

Would I need to change out the pistons or can I reliably drop the compression with a thicker gasket.

Will my cam be ok?

What other things do I need to look out for?

Thanks for your help

 

With all forged internals I don't think you'll have a problem with only 8psi, remember centrifical superchargers make boost with rpm so under normal cruise conditions you won't get near 8psi of boost. Just remember to run the highest octane fuel you can find or octane booster and if you're really worried about it being too much boost, it's cheaper/easier to change the pulley on the supercharger than to pull the heads to change the gaskets.

 

Just me, but I would pull the pistons and sell them for some low comps. If you get a great tune and 94 octane+ you should be ok. Soon as your motor gets heat soaked detonation will be a problem. Make sure not to slack on the fuel. CC306 is a nice NA cam but not the best blower cam. Just buy a custom blower cam it will make much better power.


Crank? Rods? Fuel?<---- Need more info whats your goals? Street strip or what?

 

Thanks for your help Slug

The car is my weekend toy and not a daily driver. It has been to strip a few times, but is basically used for the street and to show at local meets. My goal is to have about 450 reliable streetable rwhp. I currently have 380 at the wheels and am still working some tuning issues

Here is my complete setup:

JE/SRP Pistons (11:1 CR)
Speed-Pro Molly Rings
Summit Pro-line 6" rods
Scat Cast Steel Crank (Not Forged)
Clevite Race Main, Rod, and Cam Bearings
CNC LT-4 Heads/Intake
Comp Cam 1:6 rockers
Comp Cam Hardened Pushrods
ARP Head Bolts and Main Studs
CC306 cam with 114 LS
LT-4 Severe Duty Timing Set
Canton Oil Pan
BBK 58 mm TB
Melling HV Oil Pump
30 lb SVO Injectors
Stock Fuel Pump & Lines
Hypertech Adjustable Fuel Pressure Regulator
GM Platinum Plugs
Taylor Plug Wires
Hypertech 160 Degree thermostat
Ed Wright mail order programming
SLP Shorty Headers
TByrne off road Y-pipe
Flowmaster catback with electric cutout
B&M Ripper Shifter
McLoed Street Twin Clutch with steel Fly wheel
Stock T-56 M6
ACCPT Carbon Fiber Drive Shaft
Strange 12 bolt rear with 4:11's and Eaton posi
Forgeline RS 17x9.5 wheels with 275/40/17 ( Firestone SZ 50s in front and Nitto Drag Radials in back)
BMR Torque Arm
Eibach Pro Springs
Bilstein Shocks
BMR relocation brackets
LG Motorsports lower control arms. sway bars, and pahhard rod
Kenny Brown Subframe connectors
Hotchkis Strut Tower Brace


Prabably more info than you wanted!

Thanks again for your help

 

looks real nice and you wont need more than 6psi on that puppy to achive 450++rwhp. Fuel system is kind of weak IMO. Stock fuel pump must go You need somthing like a gss340 at the least. With FMU 32s might work but I would change those to 42s/50s or even LI 70s(NO FMU). Dont know anything about summit rods.

Your only problem is the high comp. You could try it and blow some head gaskets or a motor. Once again if it where me I would lower compression. Another thing that can suck is geting a good TUNE. Its not a easy task but well worth the PSI .

I would hook a 150 shot up and push 600rwp and when it blows do the blower thing.