should the FAST 33lb 58PSI injectors be ok to run with a ls2 intake and fuel rails ? or should i really get a bigger 42lb ? i am not doing much more with my engine , so i would think 33lb 58psi's should be ok ? i also have stage 3 patriot heads ..

 

I've run a similar set up with the 28lb injectors and didn't have any problems, i would assume that 33lb injectors would be more than enough. I wouldn't worry if i were you.

 

Considering the ls3 comes with 36lb i would go 42lb the 33s might work but at what efficiency you want to run them at around 80% 33 would probably be pushing 100%

 

33lbers are not going to be enough..
I would go at least 42lbers

 

i talked to Jon at TSP , along with a couple others and they seem to say its ok to use theses FAST 33lb 58psi injectors on the 402 NA motor .

 

Where is the Fuel Regulator located ? i should upgrade this for sure with a 402cid install on my 99 trans am shouldnt I ? where can i get a good one ?

 

U can but over 450RW there going to be in the high 90's on DC.....
I would go 42 but its your car

 

from the calculator 525hp to the flywheel says that 100% duty cycle would be 32.81lb/hr fuel injectors , so if i was going to go with 100% duty cycle at WOT with these FAST 33lb/hr ("346.5cc/min") at 58psi , injectors they will work , but thats the max right ??

I dont understand the old fuel pressure from the new ? i thought the 99 Trans am Stock fuel pressure was 58psi ?? if so will that mean these injectors will be bigger then 33lb/hr then ??? what would they be ?

 

42's or 48's to be safe

 

i have fast 36# injectors in my 402, recommeded by both tsp and speed inc.

 

The Fast inj are rated at 58
They will not be bigger than they are spec'd out
I dont care what people are telling u,go at least 42's