305 tbi to carbed 383 stroker
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Engine: 383 stoker in progress
Transmission: Soon to be a TH400
305 tbi to carbed 383 stroker
just a quick question.. would i just need to add a fuel pressure regulator to drop the fuel pressure down for the carb or do i have to go all out and change the pump in the tank. the pump is only about a year old and i dont feel like dropping the tank again haha.
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You need a return-style regulator such as the Mallory 4309.
The standard $25 dead-head reg will kill the pump.
The standard $25 dead-head reg will kill the pump.
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Engine: 383 stoker in progress
Transmission: Soon to be a TH400
Re: 305 tbi to carbed 383 stroker
okay so i just need to get that regulator and hook the return line up to it? sounds easy enough :-D
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Car: 90 formula
Engine: 305 carb
Transmission: 700r4
Axle/Gears: auburn 3.73 posi
Re: 305 tbi to carbed 383 stroker
dorman sells lne kits to convert the stock lines to 3/8 compression fittings..the stock lines are a unique gm fitting.if you need pics let me know, you will also need to wire a 12v+ ignition on wire to the green/white wire to the fuel pump relay of it will shut off after 3 sec. just finished mine and glad to help with any other issues...good luck
Bizzman1
Bizzman1
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Engine: 383 stoker in progress
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Re: 305 tbi to carbed 383 stroker
do you have a part number for the dorman conversion?? pictures would help a lot also. :-D thank you for your help.
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Car: 1992 Rally Sport
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Re: 305 tbi to carbed 383 stroker
lol..i just sent you a message buzz man then read this... i also am interested in the part number, and any info on the wiring for the fuel pump relay. so i know i get it done right... i've got about a billion wires to sort though >.<
#7
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Car: 90 formula
Engine: 305 carb
Transmission: 700r4
Axle/Gears: auburn 3.73 posi
Re: 305 tbi to carbed 383 stroker
the dorman numbers are 800153 for the supply and i think 800151 for the return but i was able to use a piece of the old return line for that. thefuel pump will require a 12v+ ignition on power source wired to the green/white wire going into the fuel pump relay. cut this wire a few inches from the relay and connect it to the ignition on power supply and thats it.
hopefully pics will help...be patient as it took a lot of hours to get the conversion right.
good luck
Buzzman1
hopefully pics will help...be patient as it took a lot of hours to get the conversion right.
good luck
Buzzman1
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Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: 305 tbi to carbed 383 stroker
i used the mallory afpr you can see in buzzmans pic
used the stock feed and return line there and it worked great
all i did and the 383 is runnin strong
used the stock feed and return line there and it worked great
all i did and the 383 is runnin strong
#9
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Car: 90 formula
Engine: 305 carb
Transmission: 700r4
Axle/Gears: auburn 3.73 posi
Re: 305 tbi to carbed 383 stroker
yeah..I hate dropping the gas tank.
mine works great ...do you get a little flucuation in pressure like 5-6 or is yours steady?
Buzzman1
mine works great ...do you get a little flucuation in pressure like 5-6 or is yours steady?
Buzzman1
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Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: 305 tbi to carbed 383 stroker
it bounces a little bit but not too bad
the bowls stay full so it didnt make it hard to tune or ne thing like that
the bowls stay full so it didnt make it hard to tune or ne thing like that
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Car: 89 c1500 truck
Engine: 383 stroker
Transmission: auto
Axle/Gears: not enough now
Re: 305 tbi to carbed 383 stroker
i havent wired my fuel pump like you say, is that why it will only run for a few seconds but never has any fuel pressure?
#12
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Engine: 383 stoker in progress
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Re: 305 tbi to carbed 383 stroker
sounds like you guys know what ur doin haha. i ordered the regulator and dorman parts today. they should be at the store tomorrow when i go into work :-D
#14
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Car: 90 formula
Engine: 305 carb
Transmission: 700r4
Axle/Gears: auburn 3.73 posi
Re: 305 tbi to carbed 383 stroker
yes to the fuel pressure , if you don't wire the green/white wire to 12v+ ignition on the pump will only run for like 3 secs and then no pressure.
Buzzman1
Buzzman1
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Car: 91 Firebird Formula
Engine: 383
Transmission: built 700r4
Axle/Gears: 4.11, 9inch
Re: 305 tbi to carbed 383 stroker
you can do it the way i tried to
i was gunna use the relay like a primer witch is the only time the compouter actully runs the fuel pump
then i was goin off the oil pump switch so that any time it had more than 5 psi it would run the fuel pump like it would stock
only problem there was i must have cooked the oil pressure switch cause after breakin in the cam it stated to stall on me so i just wired it up like stated above
some food for thought if interested
zig
i was gunna use the relay like a primer witch is the only time the compouter actully runs the fuel pump
then i was goin off the oil pump switch so that any time it had more than 5 psi it would run the fuel pump like it would stock
only problem there was i must have cooked the oil pressure switch cause after breakin in the cam it stated to stall on me so i just wired it up like stated above
some food for thought if interested
zig
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