i have an 88 iroc-z with the 5.7tpi and 80,000 miles on it.. im currently deployed and when i get back im planning on putting some money into the car.. ok i was wanting to go with a 383 stroker kit with a power adder.. anyone have any tips on weather i should go turbo or supercharged? and if so if you know of any kits for the 383 and how much hp and tq i would end up with..? thanks much

 

Superchargers typically produce anywhere between 50 to 75% of your cars current horsepower and torque. The downside to them is the power needed to spin the propeller via belt system. It's usually not much and is compensated for the fact your making an extra 75% more horsepower than your car has.

For kits, it depends on what type of supercharger you are looking for, whether it be a roots style or a centrifugal supercharger. Roots works off the belts and has a rod which spins an impeller producing boost. Centrifugal is like a turbo, but requires either a fuel induction system or blow through carburetor.

For a roots, I suggest a Weiand 6-71 for a 383 if you have the money.
For a centrifugal I always suggest a procharger, but beware of the costs!

There is no kit for a turbo setup, however there are many parts available on the web. There are also many helpful threads in this board which will help you get started on a DIY turbo. You have a choice of going single of twin. I'm personally going to attempt a single at the moment. Turbo kits require alot of fabrication and like a centrifugal supercharger require fuel injection or a blow through carburetor. With turbo's, there is no power loss to make the turbo spin, however there is turbo lag which is how quickly the turbo responds to the force of air being pressed upon it.

You can try and contact Bermudez Brainstorming for turbo manifolds and ebay yourself all the required parts for the turbo setup including wastegate, turbo, blow off valve, oil feed kit, piping and connectors and such.

Hope this helps, and good luck.

Jim

 

Also, for clarification, any kit that will work on a 350, will also work on a 383, they are one in the same basically besides for the crank which has nothing to do with the power adder

 

ok thanks guys and will the engine be ok for this build with the mileage it has?

 

Go on summit and buy a forged engine rebuild kit, it comes with an oil pump, forged rods, crank and pistons. All the good stuff is included. I think they have summit brand and eagle brand. I personally like the eagle.