think i need to change injectors?

[gectek]

I dont have any scans yet, in fact i dont have the car running yet, but i have a question. with the fairly wild build i am doing, do yall think i need to change my injectors from the stock brand new borg warners i just bought for the 02 3400 up to the trailblazer ones? idk now that i think about it. i will know more after the car is running and all that good stuff, but i really wanna know now so i can have them already on there. in case you wanna know about the build ill color in the blank spaces for those who dont wanna search(i know i need to put it in my sig)

block 02 3400 bored .030, decked .008
heads, ported by WOT Tech, manis also done by ben, 65mm TCE TB, SS headers, cat back, DHP PT and HP Tuners, cam 206/208 at .050 .528 lift 112 lsa
rpms... well above 6k, prob more like 6800. 3.91 gear. that is about all i can think of that would effect the breathing of the engine. I am going to upgrade the stock wiring to the fuel pump with bigger wire tho.

[merlot566jka]

might want to look into a wilder cam if your looking for 6800rpm.

id recomend getting the thing running and go from there. but there are online injector calculators that can get you in the ballpark.

maybe just some 24# would be a start, you can get em cheap from a stock lt1. from there your options look like 36# from the 3800scII (ran at 45 psi is about 31~32#)

[gectek]

no...the trailblazers are 28# and are exactly the same size...and yah i might look at a better cam

[Superdave]

28's should work

we're pushing 24's to the limit on a 1617 grind in a 3400 with P&P'd heads.

[gectek]

so then maybe ill just change to the 28# ones to start with...

[3400-95-Modified]

I have 28's on my hybrid and I get 73% duty at WOT around 5900 RPM

[mfuller]

I have the 28# trailblazer injectors going into mine with the 1280 grind and Ben's street/strip heads.

[gectek]

yah thats what im going to do, just go 28# instead

[3400-95-Modified]

there were a set on ebay for 40 bux not long ago...

hell even better,

http://cgi.ebay.com/ebaymotors/Fuel-Injectors-2002-2003-2004-Chevrolet-Trailblazer_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQitemZ220239268363

Oh wait, thats 17.50 each... Nevermind, they had the rail pictured i thought it was for the whole thing.

[3400-95-Modified]

This is the one I saw, send the guy a msg ask if he still has them.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=320280543686&ssPageName=STRK:MEWA:IT&ih=011