hey guys i got these injectors and i was told they are precision 780's and i dont know how to tell i didnt pay much but just wanted to verify. any help would be appreciated
the #'s are

2054 17106772
2254 17106772
8113 17106772
8113 17106772

heres some pics

 

they look like the precision injectors that i put in my car, but lots of aftermarket injectors look like those.

 

yea.. i looked but could not comfirm the size or brand.

 

help!!!

 

bump

 

 

b.u.m.p.

 

let see a picture of the jets, they definitely look like they're probably big though. Ideally, the best way to test this, would be in a car and figure out what duty cycles produce what AFR's.

 

from what i can come up with on google, they seem to come from n/a GM 3.8L motors. manufactured by Rochester. search Rochester 3.8 and find that they are 21.2 lb/hr injectors...

so about 222cc injectors if the info is right