TBI Fueling
#1
TBI Fueling
I am currently in the middle of my TBI motor rebuild as a result of too much laughing gas (oops). Anyway, I want to properly fuel it this time around. I'm running stock 062 vortec heads, GMPP TBI intake and a mild flat tappet comp cam (.425/.440). 10:1 pistons, stock crank/rods. I had a tune made by TBICHIPS when I first built the motor about 5 years ago. I have 350 tbi injectors at about 15psi. According to TBI fueling spreadsheets, I am way under fueled for my setup. I picked up a set of 80#/hr big block tbi injectors and requested a tune from TBICHIPS for these injectors and my motor and was told they were way to much for what my setup and I was fine with what I have. Any input?
BTW, the car ran great before, running consistent 13.6 1/4 mile times at 100-103 mph.
BTW, the car ran great before, running consistent 13.6 1/4 mile times at 100-103 mph.
#2
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Car: 91 Trans am
Engine: built 360 TBI
Transmission: built 700r4
Axle/Gears: 10bolt/3.23
Re: TBI Fueling
61 #/hr @ 15 psi FP are good for around 248 FWHP
80 #/hr @ 15 psi for around 325 FWHP
Dyno simulator program can give a rough hp estimate.
80 #/hr @ 15 psi for around 325 FWHP
Dyno simulator program can give a rough hp estimate.
#3
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Car: 1990 Firebird
Engine: 350 TBI
Transmission: T5
Axle/Gears: Auburn posi 3.73
Re: TBI Fueling
I am currently in the middle of my TBI motor rebuild as a result of too much laughing gas (oops). Anyway, I want to properly fuel it this time around. I'm running stock 062 vortec heads, GMPP TBI intake and a mild flat tappet comp cam (.425/.440). 10:1 pistons, stock crank/rods. I had a tune made by TBICHIPS when I first built the motor about 5 years ago. I have 350 tbi injectors at about 15psi. According to TBI fueling spreadsheets, I am way under fueled for my setup. I picked up a set of 80#/hr big block tbi injectors and requested a tune from TBICHIPS for these injectors and my motor and was told they were way to much for what my setup and I was fine with what I have. Any input?
BTW, the car ran great before, running consistent 13.6 1/4 mile times at 100-103 mph.
BTW, the car ran great before, running consistent 13.6 1/4 mile times at 100-103 mph.
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92camaroJoe
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08-13-2015 06:07 AM