Here are the specs on the car as far as internals go (and then some ):


-'89 350 roller block (bored .030" over)
-3.75" stroke,Speed-O-Motive 1-piece rear main crankshaft
-GM LT1 Forged powdered-metal connecting rods w/ ARP bolts
-SRP/JE Forged pistons
-Internally balanced rotating assembly
-"ProStreet" harmonic balancer
-Melling high volume oil pump w/ welded pickup tube
- 11/1 compression

I was told that I would also want to up it to a 255lph fuel pump. SO....whats the most I can/should spray??

 

The rule of thumb is 50% of what it makes NA. So if that motor makes 300hp, 150 more max. Now, I've pushed the limits here a bit and ran 180rwhp shot on a 300rwhp NA motor for quite some time, until a fuel solenoid expired and melted #4.

Tuning is the key. Get a scan tool and watch knock retard. Wideband O2 is helpful...you want it to stay the same or go a little richer on the squeeze than what it does NA. Shoot for around 12.0-12.5:1 A/F ratio. Get on a dyno to do the testing.

 

So what you are saying is that if I am making 450rwhp, a 200 shot would be ok? I'm wanting to hit 9's and am hoping nitrous will get me there