Hello i am kinda new to car building but the thing i wanna know is im getting ready to buy an sts rear mount turbo with t3/t4 hybrid turbo and wanting to know if my car has proper parts for it.. mods are 355 lt1 engine. Ported polished heads. Longtube headers. Exhuast. Intake. New valve springs. Rockers and rollers. Extrem energy comp cam 292/313 duration 2200-6200rpm. 32ib injectors. 12 bolt rear end. Drag suspension and tune. Stock cast iron block

 

What piston and compression ratio are you running?

 

I dont know what pistons to be honest but th3 compression om my tune says its 11:1

 

I dont know what pistons i have to be honest but i think there just the stock lt1 pistons and the compression om my tune says its 11:1

 

I wouldn't do it if I were you. Your compression is to high for pump gas and the detonation will kill your stock hypercraptic pistons. You would be better off with a 100 shot of juice IMO.

 

If i wanted to run boost what would i have to do? And is it pricey? Kinda scared spray lol dont want to blow motor

 

Pull the rods and pistons and replace with quality forged parts, beef up your fuel system, buy and learn how to use tuning software and buy gauges, etc. Couple thousand dollars no doubt.
Guys run a 100 shot on stock motors all the time with the right supporting mods.
AS your car sits it is more likely to grenade from boost then nitrous.

 

What other supporting mods should i do for spray? Do i need to upgrade the fuel rails at all? My fuel pump is a walbro 255.. i should prob invest in an air/fuel meter before i do.. am only wanting to run a 75 shot to play it safe lol not really greedy on power

 

Also am planning on switching pcm and knock sensor to odb1

 

I'd run a 340 pump along with a Racetronix hotwire kit. I'd also toss in a set of 50 lb injectors because "I'm only going to run xx shot to be safe" doesn't last. Also, invest in a wide band O2 unit instead of an A/F gauge. Most of those gauges simply read the stock narrow band sensors and aren't much more than a light show. They're also highly annoying/distracting.

You might also consider doing the 24x conversion instead of the OBD1 swap. Tuning options are much better.