I know this has been asked in the past, but I'm just trying to get an idea of how many people have had good luck with 19lb injectors on a 350. Can you only get away with it on a bone-stock motor, or do the 19lb'ers give you any room for mods?

I realize of course, that I'll have to bring my fuel pressure up to compensate for the lower flow rate.. What pressures are you guys running?

 

I don't have a whole lot of experience, But I just put in a set of 30lb SVO injectors new for about 250bucks!
You can't beat it... I would highly recommend them. Of course you'll need to reprogram your computer.
Or if you can, find some LT1 injectors(22lb and 24lb).

Brendan

 

Another thing I've been wondering is what the flow rate of "common" injectors like 2.8l, 3.1l, or 3.8l GM motors have.

There must be some reason why we don't use these, or else someone would be doing it by now!

 

I did and set the Fuel pressure at 46 PSI and had good luck with it. Actually its better to run smaller injectors with Higher pressure.

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89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555

Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!

 

I'm running stock 19# on my 356 right now. However the chip is for a 305 so there is always a high block learn and it idles a little rough. A custom chip would fix all that.
Anywho, you can run them well to the high 300 hp range I've heard, with the correct chip of course.
I am switching to 24# and a custom chip so i don't have to run too high pressure on the stock pump.

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'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)

 

im using SVO 19# injectors on my ZZ4 at 52PSI.From everything i have heard the SVO's are equal to around 21# rated at the GM PSI rating.Car does fine cked it on the scanner and O2 is fine at WOT.

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86 z28 zz4 ssm lift bars ,3.73 simesed runners and a traction deficient 13.707@101.02,on a 2.16 60 ft on 295/50/15 junk street rubber ,best MPH run 13.82@102.7,69 AMX,390 4 speed sticky tires and other stuff..12.94@102.3

 

im running 19lbinjectors with my 350 at aorund 52-54 psi and it runs good. Good luck

 

You could get away with it if you can bump your fuel pressure way up, like above 50 psi. I thought about doing that since my car runs so rich plus I live up here over 5000 feet.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, LPE High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)

 

I also ran my 355 with a 305 chip and 19lb injectors, then I opted to 24lb injectors and left the 305 chip in for a few months, it ran rich, but good. Then I replaced the stock 305 chip with a stock 350 chip and it stop running rich, but I didnt feel to much gain of horsepower. About the only thing noticeable was the top speed limiter was gone and it now revs to 5500 rpm.


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1992 Camaro Z-28 5.7L auto t-tops arctic white

1967 Pontiac Catalina 2 door fastback 400 v-8 auto cameo white dark red interior