armintheman

iTrader: (31)

hey guys i was wondering what size injectors does the stock transam in 1998 come with? and will ls2 injectors fit on my ls1? i think the guys said they're 33lbs

Benner

iTrader: (2)

Almost positive 98's come with 28lbs injectors. 99 to 02 are slightly smaller. I believe 26lbs. Not sure if LS2's will fit or not.

Found the thread explaining the differences.

https://ls1tech.com/forums/1740880-post2.html

gold98Z28

iTrader: (7)

98 and 01-02's were 28.8's. they had differant part numbers but are both the bigger ones. the middle years had the smaller 26.4's. maxed out the 28ers will support right at 450 rwhp. anything over about 430 i like to step them up. other wise i dont waste the money. the stock injectors are more precise and better injector then others IMO. the ls2 injectors are slightly differant but can be made to work. i dont remember off hand if they are slightly longer or shorter and use a differant oring. you can modify your fuel rail mounts and use differant orings and they will work. with your cam unless your planning on a dry shot or something i see no need for bigger ones. i have almost the same cam in my lq4 and still run my 98 injectors. befor i dialed in the tune i thought i needed bigger ones as i was maxing them out. but after leaning the PE out where it needed to be i am only at about 85%DC now

armintheman

iTrader: (31)

well im at about 400 rwhp now and i have a 100 shot dry kit on top of that. on stock fuel pump. so i was thinking before i sprey maybe i should upgrade fule pump and injectors...thats why i ask

gold98Z28

iTrader: (7)

ok, thats a good idea if your gonna do a dry hit.

gold98Z28

iTrader: (7)

hey man, i dont want to steer you wrong. the ls2 injectors have a differant wire connector. im half brain dead and almost forgot. i was thinking what i had to do just swaping to differant intakes ls1/ls2 to make the injectors fit. completely forgot they had differant connectors

FICINJECTORS

iTrader: (30)

ls2 injectors are 48mm and ls1 are 60mm plus the connector is different. we sell ls1 injectors in all sizes to 42 for 239 for the set of 8. Plus if you trade the old ones its 199. 3 yr warrantee