BTW new here

I dont have a f-body so I dont drop in very often


heres my situation

I have a tbi 4x4 truck
it was 305 700r4
Im putting a .060 over 350 in it
~9 to 1 compression
mildly ported 1.94 / 1.5 old school heads (993 casting)
speed-pro 204/214 @ .050 cam with 1.6 rockers making it like .450/.470 lift
holley projection intake
454 t/b
and headers

as you'll can tell by the cam and whatnot Im not looking for high rpm but more power to move the heavy truck plus I tow cars behind it on my trailer

I dont have any injectors except the 305 ones and Im putting the motor in today and want to order or buy locally some injectors for it

I was looking at cop car injectors but they are hard to come up with and expensive If you can find them (~65pph)

since Im not looking for high rpm you'll think I'll survive with 350 injectors (55 pph ) or should I go for the 454 ones? I really want a clean idle for stock torque converter plus running a/c in the summer so I was leanin toward 350 injectors and jacking the fuel pressure If needed

also I emailed tbichips.com guy and he says no problem burning me a chip just let him know my combo

do you'll suggest anyone else?
I'll want someone willing to tweak the chip if its not right (enough) to start with
Im not really looking to burn my chips for my truck I can scan it and feed the info to whoever I get to burn them

Im kinda pressed since its my truck I need it for work so I need to make a move pretty quick on getting the rest of my parts

thanks to all that'll take the time to give me your input

RED

 

crappy pic from my cell phone cam

 

I have a similiar motor, but with Trick Flow heads, and I'm running the 55# injectors. The chip needs to be dialed in closer, but I really haven't had the time to mess with it.

Brian (@tbichips), I think will give you 3 reburns with the initial chip, so if he sends you a chip and it isn't quite running right, datalog and send him the info, and he'll burn you another, etc.

I tried to run big block injectors with mine, and even after 7 burns, we couldn't get it to even idle right. It's just too much fuel, and without the guy sitting right there in the seat, datalogging and changing, I don't think you'll get it running very well. Stick with the 55# or 65# injectors.

I think with 55#ers, Brian will recommend setting the fuel pressure at 20psi

 

I second the 55# suggestion. Brian is going to be doin well if he gets your truck running decent in 3 chips. He'll get you runnin, but not much more than that. You've changed alot from stock.

 

thanks guys

I bought a set of stock 350 injectors today after reading your advice

I have emailed Brian (tbichips.com) also to try and get a chip in route

they are talking about snow sunday and monday here so Im going to hope to have it running in time to go out and look at all the others in ditches and make a little pocket change pulling people out

thanks again for you guys help

RED

 

If you havnt done so already, get a good fuel pump. I have ~65's at the stock psi and theyre cutting it pretty close at the stock pressure. Also, hows your alternator mount up? I have those same valve covers and I had to beat the crap out of the drivers side cover to get it to clear my alternator.

 

I have a few walbro pumps laying around ..Im thinking the 190lph should be more than enough ..I dont see much need in a 255lph pump .. Just havent felt like putting a pump in it yet but guess its about that time

as far as the alt to valve cover I went out and compared the car drivers side bracket to the truck drivers side one and the truck one mounts the alt higher up and it clears just fine

the car bracket I compared it to is off a 88 tpi gta

well its in the truck and my chip and headers should be here tomarrow (had both overnighted) so I should atleast be fireing it off on friday unless I get done early enough tomarrow night not to pizz off the neibors while I go thru cam break in :shrug: