88mustang

I've been looking through the forums and i can't really find anyone running the same setup as me. I need to know what size injectors to run with my new combo. I have a NOVI 2000 (about 10-12 psi) and am building the engine with a Scat 347 stroker kit. I have #42's right now, but the company that made my chip says i have to use at least #60's. That seemed a little big to me so i just wanted to get some second opinions and the people in this forum really seem to know their stuff. What is the max rwhp the #42's can support with a blower.
I have a stage 2 nitrous kit but probly wont use it after the build.
Thanks for any input. -Tyler

Some of my mods:
347 stroker (forged pistons, rods, crank)
NOVI 2000
Trick flow track heat upper and lower
windsor sr. heads (64cc)
80mm maf w/ #42 injectors
anderson power pipe
stage 2 NOS 75 h.p. (dont plan on using)
BBK longtubes w/ H-pipe and flowmasters
73mm throttle body

mpswirl

I thinku will be ok with the 42s because i have a T66 turbo on my car and i have 42s with plenty of fuel. Id say run it with the 42s and check the duty cycle of the injectors. You will lose idle quality with 60s, the higher you get the harder to get to idle smooth. I think youll be fine.

88mustang

Thanks, i'll probly wait and have it on the dyno and see whats happening. Anybody else?

88BlueGT

42's are kind of small for that combination.

Also, are you running this on a stock block? [&:]

88mustang

i dont know if it'll break over 500 rwhp or not. I was running a 150 shot with all the mods except the heads and stroker kit and the block is still in good shape. I'm lookin at some dart blocks though, not sure what i'm gonna do yet. I only drive the car once a week or so.

88BlueGT

Well, what is your setup? be specific... (heads, cam, intake, etc.)

88mustang

My new setup will be everything listed in the first post. windsor sr. heads, AFM b-41 cam (236/248), trick flow intake.
My old setup was everything listed in the first post with a 150 shot, minus the heads and stroker kit. sry for the confusion.

r.barn

according to the injector calculator on Tech page

you would need 43# injectors for 500rwhp, so I would go with the 60's or
you are running the 42's at the edge if not beyond their limit.

you want to make sure you upgrade your fuel rails and lines from tank too.
stock lines and rails will not handle that flow.

88mustang

i have an adjustable fpr, would it be a bad idea to bump the fuel pressure a little bit?

r.barn

it's the cycle rate that is going to max out with 42's, you run the risk of the injector basically just staying
open 100% and never closing at high rpms

you really need 60's