What a good size injector for a 383 lt1?

 

stock injectors will get the job done (at least thats what i was told when i was going to build a 383)

 

what is your rated hp. or estimated hp. theres a post in the how to and faq sticky that tells the estimated injector for given hp. number 25 on the list here https://camaroforums.com/forum/93-02...62/#post557634

 

Just take your estimated rwhp and multiply it by 0.08 to get minimum injector size.
Ex. 400 hp x 0.08 = at least 32 lbs.
Go the next step up if you want more headroom for future upgrades. If 32 lbs. is your minimum then you should buy 36 or 37 injectors.

 

You sure you want to be using rwhp? The calculator craby gave a link to calculates 31.25 lbs. when having 400 hp at the flywheel.

 

A number of people are running Bosch 32 lb injectors on their LE2 engines with around 400 at the wheels w/o any problems. I'd go a few steps up from rwhp x 0.08.

 

lloyd recommends 36 lb injector for the setup i have, about 400 rwhp. i am using 30 lb injectors to try and keep some mpg. the car is also tuned for the 30 lb injectors.