Tuning a TBI 377ci stroker, estimated hp..400ish.fwhp.
07-08-2016, 02:00 AM
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Car: 89 Chevrolet c1500 Cheyenne fleetsi
Engine: 383 stroker l31 880 vortec tbi
Transmission: 700r4
Axle/Gears: 2.73
Tuning a TBI 377ci stroker, estimated hp..400ish.fwhp.
Where to begin..? Let's start with a greetings to all members and lurkers of this appealing forum. What brought me to searching and finding out about this place, is the need to build my own engine and tuning a tbi for it...
What I have, 350sbc l31 Block, 3.75 stroke 400 crank 4.0 bore. Procomp SWIRLPORT 58cc heads. Hedmen 1 5/8" Long tube hedders. 2 1/2" dual exhaust system dual in/ out flowmaster muffler. Holley 502-6 670 cfm tbi. 255lph fuel pump. High pressure spring in the regulator, It can go to 55+ psi. Mini delphi injectors, I'm sure they are the # 522-43. Air gap plenum intake. ZZ4 GM PERFORMANCE CAM. Stock sensors. 7747 ecu.
now the part of my situation that i need help with...this makes around 400ish.fwhp. Any suggestions?? I have equipment to tune, ostrich 2.0, moates flash and burn 2, aldu1 to cabl1, socket booster. G2 adapter. The goodies. Wideband and gauge. bpw/bpc? Injector bias? Battery correction?? Timing? Ve? First time tuner... 
What I have, 350sbc l31 Block, 3.75 stroke 400 crank 4.0 bore. Procomp SWIRLPORT 58cc heads. Hedmen 1 5/8" Long tube hedders. 2 1/2" dual exhaust system dual in/ out flowmaster muffler. Holley 502-6 670 cfm tbi. 255lph fuel pump. High pressure spring in the regulator, It can go to 55+ psi. Mini delphi injectors, I'm sure they are the # 522-43. Air gap plenum intake. ZZ4 GM PERFORMANCE CAM. Stock sensors. 7747 ecu.
now the part of my situation that i need help with...this makes around 400ish.fwhp. Any suggestions?? I have equipment to tune, ostrich 2.0, moates flash and burn 2, aldu1 to cabl1, socket booster. G2 adapter. The goodies. Wideband and gauge. bpw/bpc? Injector bias? Battery correction?? Timing? Ve? First time tuner... 
07-08-2016, 02:05 AM
#2
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Car: 89 Chevrolet c1500 Cheyenne fleetsi
Engine: 383 stroker l31 880 vortec tbi
Transmission: 700r4
Axle/Gears: 2.73
Re: Tuning a TBI 377ci stroker, estimated hp..400ish.fwhp.
There she is. Wanting to roast tires. 700r4 underneath. Wanting to upgrade her soon too. Haha
07-08-2016, 05:55 AM
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Car: 89 Chevrolet c1500 Cheyenne fleetsi
Engine: 383 stroker l31 880 vortec tbi
Transmission: 700r4
Axle/Gears: 2.73
Re: Tuning a TBI 377ci stroker, estimated hp..400ish.fwhp.
I guess I was a bit cut and dry. I'll keep reading and make an understanding of my own.
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