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CarburetorsCarb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.
whats the least expensive regulator? i have all the stuff to put my stock TBI back on it and if im going spend close to $100 i'll just put the TBI back on. i have a free TBI pump from a cousin who went TPI in his TBI rs, just dont wanna drop the tank yet.
whats the least expensive regulator? i have all the stuff to put my stock TBI back on it and if im going spend close to $100 i'll just put the TBI back on. i have a free TBI pump from a cousin who went TPI in his TBI rs, just dont wanna drop the tank yet.
Idk about cheapest, but this one by holley is only 30 bucks. Not a bad deal at all.
ok i bought my car 92 firebird originally tbi, now is a 4 barrel carb. running off what i believe to be the stock TBI fuel pump with no return line. now my fuel pump when out or so i believe, once i test it i'll know for sure. but its been two or more months since ive driven it and really all i want is to drive for the next few months. i thought about buying a mechanical pump and rerouting the hose but will it pull through the in tank pump?
I would replace the in-tank pump, run a regulator and hook up the return line. This is one of the reasons your original in-tank pump went bad. Without the fuel circulation it'll get hot, killing the life of the pump.
A mechanical pump will not have enough suction to pull through a dead electric pump. One of the old pusher pumps, yes because my old 3psi pusher pump died and the mechanical pump did fine.
I'd run either a holley or mallory return style regulator that you can draw the pressure down to 5-7psi. My mallory unit ran $90.00 five years ago when I bought it.
ok i bought my car 92 firebird originally tbi, now is a 4 barrel carb. running off what i believe to be the stock TBI fuel pump with no return line. now my fuel pump when out or so i believe, once i test it i'll know for sure. but its been two or more months since ive driven it and really all i want is to drive for the next few months. i thought about buying a mechanical pump and rerouting the hose but will it pull through the in tank pump?
come to find out its not running the stock pump at all, just an inline pump that a previous owner installed.
Im putting a new carbed 350 in place of LB9. My car is an R7U code car and has the swinging fuel pickup in tank. Can I get away with leaving it in the tank, run it, with regulator and the cts filter that has a return to tank outlet. OR get separate inline pump to help mechanical and suck thru in tank swinger?
I'm thinkin that in tank swing pump will have to come out or gutted?
I gutted my sons and am only running a mechanical pump and it works fine. I am running a high volume pump on his car and it is filtered before and after the pump. Its just what we do here. We don't run the computer at all and run all old school stuff...HEI, Q-jet or Holley and electric fans on the radiator. It makes things so simple again.
I gutted my sons and am only running a mechanical pump and it works fine. I am running a high volume pump on his car and it is filtered before and after the pump. Its just what we do here. We don't run the computer at all and run all old school stuff...HEI, Q-jet or Holley and electric fans on the radiator. It makes things so simple again.
Ya the 350 will be carbed. already has electric fan. Im doing it up old school the way u described. Darn I didn't want to drop the tank. Was hoping I could just suck thru stock pump. I've read thru this thread and no one really said u could unless I missed it.
Works fine on my sons 500hp 355, but we have no restrictions in the fuel line just a high volume mechanical pump, but that is just us. Has worked for over 5 years.
A mechanical pump is not enough to feed a carb'd engine on these cars, I tried to do exactly what you just described and it did not work (nor have I seen it work in anybody elses experience on here).
You need to either: A) replace the in-tank pump and route it through a regulator
or
B) install an electrical (out of tank) pump and route it through a regulator.
I'm not going to argue one way or the other but the fact is I have 2 '86 Z28's running on mechanical pumps, no problems at all and one is a 500hp 355. Runs strong and has never ran out of fuel. I use a high volume pump in the old school spot on the block and have yet to have a single problem. I also got rid of the computer so they both run older HEI's and Holley carbs for the record. Just my 2 cents.
So I pulled the pump out of the tank of my 1987 V6 that is being converted to a v8 with carb. I did the same as the original poster. The float is connected to a blue wire. The power plug for the pump was black and a red one. The plug end outside the pump is black and grey and purple. Not sure which one to cut pump power but allowing the float to still work. Question, if I leave the pump leads (red and black) just floating in the tank, that cause an issue? 12 volts going there, no?
Hey guys I recently inherited an 83 Z28 with crossfire injection. The car has been sitting in my grandfather’s garage since 2004. As such the fuel pump is shot. I got the car hauled to a reputable mechanic who has experience with the style of car. ( he had an 82) he pulled the fuel tank and said its shot and the sending unit is to as well as the pick up tubes and screen. I can’t seem to find parts anywhere for this car and really don’t want to give up on it as it is great shape other wise and only has about 62 thousand miles. Any help would be awesome. TIA!!!
I find that a lot of what I want has to come from the U.S. That said, with a little effort I was able to find some Canadian content. There's an online retailer called Wrench Monkey which has provided a few parts. Did a quick look and found these fuel tanks. https://www.thewrenchmonkey.ca/auto-...986/fuel-tank/
I'm swapping from tbi to carb and I'm going with an external electric fuel pump. I'm dropping the tank and removing the pump. Will an earlier year carb car fuel pickup work on my tank? I've heard different opinions on what to use after removing the fuel pump. I would like to buy something off the shelf/parts house if possible. Oh yea.. I did a search and didn't have much luck. I know my answer is here somewhere. Thanks.
Well, It could be a good option. Here's what you gotta check though:
Size and Shape: Make sure the fuel pickup fits your tank properly. It's gotta match the tank's dimensions and all that.
Fuel Line Connection: The pickup should have a fitting that hooks up to your external electric fuel pump. No point in having it if it doesn't connect, right?
Pickup Design: Make sure it's designed for a carbureted system, not for those high-pressure injection setups. Carbureted pickups are simpler 'cause carbs need lower fuel pressure.
Block-Off Plate: Don't forget to get a block-off plate to seal up the hole where the in-tank pump was. You don't want any leaks or stuff like that.
Filter: Check if the pickup has a built-in filter, but if not, get a separate fuel filter to keep things clean and prevent debris from reaching your external pump.
Before buying anything, do your research and talk to folks who've done similar conversions to make sure you're getting the right parts for your ride. And if you're not sure, hit up a good auto parts store or some car forums for expert advice. Take your time and get the right stuff.
Why do you need to bend the tube at an angle? Why can't you just use a straight piece of tubing and slide the sock up the tube so it's vertical? That's the way these types of sock style strainers were originally installed on the sending unit tube. Also, why not just use a short section of 3/8" fuel hose held on with clamps to connect the new tube to the sending unit tube instead of the compression fittings?
08-12-2014, 06:58 AM
