travsirocz

are accel 24# injectors too much for 300-350 horses

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1987 Camaro Iroc-Z Z-28 with a TPI 5.7
-Ram Air,K&N Filterchargers, Gutted Mass
Airflow Sensor, Throttle Body Airfoil,
Edelbrock TES Headers and Y pipe, Gutted
Cat, 3 inch exhaust, Flowmaster
-Hypertech Thermomaster Chip, 160 deg Stat,
Adjustable Fuel Pressure Regulator
set at 50 psi, MSD Cap, MSD 8.5mm wires,
Accel Coil, MSD 6AL Ignition Box, Accel
Plugs
-Richmond 3.73 Gears, B&M Transpak,
B&M Rachet Shifter, Energy Suspension
Products
-Fiberglass Cowl Induction Hood,
Purple Neon License Plate Frame,
16X8 Rims with BFG 245 50's,
Pioneer Deck, 2 JL 12's in a Q-Logic
Box with a 300 Watt amp

What you can put between your ears,
no one can take away.

Kyle F

Too much? not if you program for them. Though you would probably be better served to keep you 22# from your 350 and bump the fuel pressure a bit to get the extra fuel you need to feed 350hp compared to the stock performance.

As I am sure Glen will get to this and tell you exactly what to do with your computer to run 350hp with what ever injecto you choose I will choose to tell you about the benifits of keeping your 22# and running higher fuel pressure.

If you run a higher fuel pressure you will be able to get more fuel to your engine in a better fuel spray pattern that will mix better with the air flowing in. This will also cause the fuel to turn into a gas quicker in the intake track going into the head. This change in state to a higer state of disorder absorbs heat causing the intake charge to be cooler.

So for your application I would say for the money just buying and adjustable fuel pressure regulator would benifit you the most, but if you want the absolute MOST out of you car you will need to Burn your own Proms. If you choose to go that route talk to Glenn91GTA He know his ****!!!

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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!

branz28

on another note, if you goto the track with the AFPR, you may find you only needed to bump it up another notch for peak performance, or even lower it.

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89 IROC-Z 350 TPI

-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR

KW87GTA

I've been curious about this stuff myself, and seem to have found some answers. Supposedly the stock 22# injectors are good up to 400hp, in which case, it would seem to reason that there is no reason to step to 24# unless you plan on going over 400 at some time. You might be better served by getting a full service on your 22# from cruzing performance to regain all the life in them. Like mention in the above post, the AFPR might really be your best bet. You would really be surprised at the difference this little guy can make, especially in the upper rpms. Just be careful when adjusting it, you want to make sure that the vacuum line to it is disconnected and plugged, before you make the adjustments. You'll also need to buy a 100psi fuel pressure gauge a hand held will do fine. It seems for the 350 motor the most performance is to be found around 50psi. You might find more a little higher, but this could cause a rich condition to take place and really hinder fuel economy not to mention ruin your cat. Good luck.

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87 GTA 350 L98
K&N filters, beefed up TH-700r4, Accel Manifold, Ported Plenum and Runners, Fuel Press. Regulator 49.5psi, air foil, modified MAF, SLP cold air box, Hypertech Thermomaster chip w/160 thermostat, MSD 6AL and Blaster 3, B&M shift kit & megashifter, Moser Ford 9in Rear with Richmond 3.50 and locker, Edlebrock TES headers and Cat Back,Hotchkis setup in rear, Poly suspension and Koni in the front, relocated MAT, bypassed TB coolant, 300 lbs lighter

Fastest ET's
Stock-0-60 6.8, 1/4 15.0 @ 94
Best-0-60 4.7, 1/4 12.8 @ 112
Norm-0-60 5.2, 1/4 13.2 @ 108

72LT1VETTE

If the 22# injectors are good up 400 HP, what HP are 19# ones good for?

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1972 Corvette LT1
Keith Black 9.7:1 Pistons
Comp Cams 480/480 lift @220 Duration
Original 4 Bolt Steel Crank
1.5 Roller Tip Rockers
336 Posi Rear Chunk
1991 Speed Density TPI setup
DUI Special order Tachdrive Distributor
Dyno Tested 348 HP to rear wheels