In , my experience 24 lb injectors are good until about 430 horsepower. That is with 80 psi of fuel pressure. You don't really want to go too much higher on fuel pressure because the injectors become unpredictable at pressures above 90 psi...I have used pressures as high as 120 psi but i was gritting my teeth while doing it and it was definitely pushing the envelope. 30s can get you to the low 500 horsepower levels at the wheels if treated accordingly.
If you have a choice, go with a T-rex pump instead of an in-tank. The in-tank pumps are not really good at sustaining the high pressures required for the very high fuel pressures caused by the FMU in blower setups. A T-rex with a stock intank can support a good amount of power 400 or so at the wheels usually, depends on what kind of shape the pump is in....just go with the T-rex first and replace the in-tank later when you get ready to make more power....hope this helps, good luck guys!
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91 coupe, SVO block 380 windsor, Brodix Neal heads, Super victor spyder intake, 90mm Accufab, 160 lb. Bosch injectors, D2-R procharger, Dynamic powerglide, 4500 stall, 9" rear, Speed Pro injection. 1047 hp at the wheels on Dynojet dyno with 23 lbs. of boost.
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