Is my sending unit ok for new carb
09-08-2012, 10:37 PM
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Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Is my sending unit ok for new carb
I have dropped the feul tank to get all of the old gas out of it that sat for 12 years. I just want to make sure that the sending unit that is in the tank now will be ok with the beefed up 350 and 600 to 700 cfm carb I plan on putting on the new motor (not sure what I want to put on yet ... still learning) The sending unit is 25 years old but it was working fine when the 305 motor was in it and I had to move the car to my garage even with the 12 year old gas in it !!
Thanks
Thanks
Last edited by Sidethumper; 09-11-2012 at 08:29 PM.
09-08-2012, 11:22 PM
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Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: Is my sending unit ok for new carb
Check with an ohmmeter "0Ωs Empty / 90Ωs Full".
If you get this readings without any bad spots when move the float lever up and down you should be good to go.
If you get this readings without any bad spots when move the float lever up and down you should be good to go.
09-11-2012, 05:45 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Put a new pickup sock on while you have the tank out.
The 3/8" pickup line is sufficient to supply more power than you'll make with a 700 CFM carb.
The 3/8" pickup line is sufficient to supply more power than you'll make with a 700 CFM carb.
09-11-2012, 08:29 PM
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Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Re: Is my sending unit ok for new carb
What about the vapor line? I deleted it so do I plug the hose or put a feul filter on it?
09-12-2012, 10:08 AM
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Car: 1983 Z28/2000 ZR2
Engine: CFI to carbed 305/ 4.3
Transmission: Built 700r4/4L60e
Axle/Gears: 3:23/3:73
Re: Is my sending unit ok for new carb
Don't plug the vapor line, if it gets clogged or plugged you will have a ton of built up pressure that you don't want. A fuel filter will work fine.
09-13-2012, 07:10 PM
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Car: 88 Camaro
Engine: 383
Transmission: TH350
Axle/Gears: 4.11
Re: Is my sending unit ok for new carb
I'm assuming he meant the one that goes to the charcoal canister. Yea, plug that line right at the tank if you can. Just make sure your vent line is in good working order.
09-13-2012, 08:31 PM
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Car: 87 Pontiac Trans Am
Engine: Lapouttre Racing 350
Transmission: Rebuilt 700r4 Mild shift kit
Axle/Gears: 10 bolt 3.23 posi w/disc brakes
Re: Is my sending unit ok for new carb
I was wondering about that vapor line because if that is not pluged then the vent is usless lol.
Thanks for the replies
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