24 pound injectors
11-14-2003, 10:32 PM
#1
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Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
24 pound injectors
I have a 1988 camaro paxton supercharger with about 9-10psi,trickflow heads,comp cam 220/230 dur 114 lsa 2600 stall nonlockup stock tpi and chip,with 3.42 gears hooker headers borla catback.problem is that when i am 3/4 throttle it will ping but if i put that nos octane boost in the ping will stop.is the injectors to small.timing set at stock 6 degrees.will 30 pounders stop these.fuel pump is walbro 340 with hotwire kit.do not like to retard timing.also i have colder sparkplugs installed.
11-14-2003, 11:52 PM
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Car: 1987 GTA
Engine: 645hp/656 ft lb Blown 383
Transmission: 700-R4 3,000 stall
Axle/Gears: 3.55 moser 12-bolt
i have the walbro, what is the hotwire kit? and i doubt that 30 lb injectors will help you. lower compression, run race fuel, cooler plugs, intercooler/water injection/ nitrous, timing retard,. lower boost, ..........those are all good start points, the paxton is not efficient and creates tons of heat . good luck
Last edited by Justin 87 GTA; 11-14-2003 at 11:57 PM.
11-15-2003, 01:01 AM
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Car: 1992 B4C 1LE
Engine: Proaction 412, Accel singleplane
Transmission: built 700R4 w/custom converter
Axle/Gears: stock w/later 4th gen torsen pos
what chip is it? what method of extra fuel delivery is being used when the blower is boosting/
11-15-2003, 12:02 PM
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Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
i still have a stock chip,and the fuel pump with the hotwire kit is fuel pump is powered from the back of the alternator with 8g wire to pump it gets a full 14volts.look at www.racetronix.com
Last edited by antoine; 11-15-2003 at 12:07 PM.
11-15-2003, 12:58 PM
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Car: 1992 B4C 1LE
Engine: Proaction 412, Accel singleplane
Transmission: built 700R4 w/custom converter
Axle/Gears: stock w/later 4th gen torsen pos
well you either need a custom chip to add the fuel, a 749 ecm swap with a custom chip (it senses boost and ads fuel accordingly), or you need an FMU like was supposed to be supplied with your kit to raise fuel pressure a bunch as boost comes up.
here:
https://www.thirdgen.org/techbb2/sho...&highlight=fmu
here:
https://www.thirdgen.org/techbb2/sho...&highlight=fmu
11-15-2003, 01:11 PM
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Car: 89 GTA
Engine: 5.7L Supercharged
Transmission: T-56
Axle/Gears: Moser 9" 3.70
Are you using a FMU to add more fuel?
I think you should swap the fuel pump out for performance one, your combo sounds pretty mean to be using a stock pump. Might also be a good time to start learning to program your own chips before you blow that engine, but for now you could set your base timing back a little then see if you can find someone with a WBO2 to see where your at.
I think you should swap the fuel pump out for performance one, your combo sounds pretty mean to be using a stock pump. Might also be a good time to start learning to program your own chips before you blow that engine, but for now you could set your base timing back a little then see if you can find someone with a WBO2 to see where your at.
11-15-2003, 02:42 PM
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Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
i have a walbro fuel pump installed. no fmu
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11-15-2003, 07:29 PM
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Car: 1992 B4C 1LE
Engine: Proaction 412, Accel singleplane
Transmission: built 700R4 w/custom converter
Axle/Gears: stock w/later 4th gen torsen pos
solution, use a method listed above to add more fuel. Also not listed above, super fueler or aftermarket ECM.
11-15-2003, 10:04 PM
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Car: 1987 GTA
Engine: 645hp/656 ft lb Blown 383
Transmission: 700-R4 3,000 stall
Axle/Gears: 3.55 moser 12-bolt
what type of power does the walbro pump that i have support without the hotwire kit? Does it hurt the pump to hotwire it? will it not last? thanks
11-15-2003, 10:39 PM
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11-30-2003, 03:56 PM
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Originally posted by Justin 87 GTA
what type of power does the walbro pump that i have support without the hotwire kit? Does it hurt the pump to hotwire it? will it not last? thanks
what type of power does the walbro pump that i have support without the hotwire kit? Does it hurt the pump to hotwire it? will it not last? thanks
With the HW harness it will get about 13.5-14.0V all day which is the sweet spot for the pump. Factory spec is rated at 13.5V. The HW harness can actually extend pump life.
http://www.racetronix.com/product/RX..._Pump_Kit.html
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