Ok before i start please don't judge my set up. I already know high compression and boost don't work well together. It's an experiment.

I have a 1995 ls block
ACL race main and rod bearings
Type-R pistons
Stock rods(magnafluxed and shotpeen'd)
Stock but completely rebuilt head
Jackson Supercharger 6-8 psi

Question being, What size injectors should i use on this set up to get proper fuel?

 

440 or higher. What are you using to control them?

ACL race bearings? I hope you plan on tearing that motor down at least once a season to inspect/replace those.

 

im going to send my ecu out to be tuned to my specs. Why are they junk?

 

never "send" out an ecu for a final tune. it should be only used as a base map so you can get your car to a tuner who has a good dyno. this is even more paramount as you're running ITR pistons.

most SC/ LS motors tend to be sub 200whp (Dynojet) with 6-8psi pullies, so 440cc injectors should be fine. 440's should be good to around 250-275whp (if i remember correctly).

 

I ran a boost calculator and it said im going to run 16:99:1 compression, this isn't good considering its an interfernce motor and i can't retard the timing. I have some decsion making to do.

 

They have looser clearances than the standard bearings and are not meant for extended periods of use, so they aren't ideal for a street driven car.

Get your ECU chipped, run a program like Neptune or Hondata, and have it dyno tuned. Running the car off a basemap is the wrong way to go about things if you give two shits about reliability.

And high compression and boost go really well together assuming you have high enough octane fuel to prevent detonation. A JRSC isn't going to make enough power to even matter, assuming you have proper engine management.

 

So what would you surgest for fuel 92 plus a bottle of octane booster every fill up?

 

I don't recommend octane booster under any circumstances. Straight 92 octane will be fine.

 

boost calculator? huh. what ratio does "16:9:1:" represent?


dont bother with those octane boosters. when they mean they add "points", (lets say 5 points) to your overall octane, its more like 92.5, not 97. you should just have the car tuned for 92 and call it a day. the only true way to increase your octane is by buying higher octane (100+ but not leaded) and mixing it with the 92.

 

My static compression ratio is 11:57:1, plus add a max of 8psi from super charger, should... bring it to about 16:9:1, correct me if im wrong?
Thanks alot, I didn't know that.