Injectors that come w/ L76 intake (from SDPC)......

[WHYTRYZ06]

What size are they??? need to rescale the IFR table...

THANKS

[Bruce Melton]

We are told they are 40# and the same as LS7/3. If you look at the IFR for a LS7 it starts @ 41.7 but with strange Manvac so I use this with good results:

LABELS Injector Flow Rate (Lbs/Hour)
Manifold Vacuum PSI {link: GM.MANVAC} Value
0.0 39.993126
0.7 40.241145
1.5 40.489164
2.2 40.737184
2.9 40.985203
3.6 41.233223
4.4 41.481242
5.1 41.729261
5.8 41.977281
6.5 42.163295
7.3 42.411315
8.0 42.659334
8.7 42.907353
9.4 43.155373
10.2 43.341387
10.9 43.589407
11.6 43.837426

[WiseGuyZ06]

Thanks, good info

[jfpilla]

Bruce,
I get a slightly different result. Not enough to worry about.
Joe

[Bruce Melton]

Joe,
Agreed.

The IFR table from the stock LS7 does not escalate like we are used to which is why I started a bit lower.

Of note is that these injectors perform MUCH better than the SVOs we had used previously. I am told that the SVO spray pattern shoots on the floor of the head where the GMs cone pattern hits the back of the valve as intended.
This results include no black puff when on the gas, much better hot starts, idle plus a few more mpg. Also these new injectors seem to support more hp.
FAST sells a 50# of this style.

[jfpilla]

http://forums.corvetteforum.com/show....php?t=1674178

I got the information a while back. It's from an HP tuners file.
My LS7 with a Vram and Amer.RacingHeaders @ 6700rpms logs 90% duty cycle. It seems they won't support much more power.