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View All Holley GM 2-bbl Throttle Bodies

Holley Replacement 670 CFM TBI Throttle Body for 1990-95 GM 5.7L Trucks

510-502-9

Holley
made in usa

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Replacement 670 CFM TBI Throttle Body for 1990-95 GM 5.7L Trucks
$932.95
More than 10 available
Replacement 670 cfm TBI
  • 1990-95 GM 5.7L V8 truck
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    502-9 is rated 3.0 out of 5 by 6.
    Rated 5 out of 5 by from runs great and fit perfect Runs great so far have had 0 problems out of it. And now my truck can really get up and go.
    Date published: 2019-12-04
    Rated 5 out of 5 by from Holly TBI Easy to install, only took about 15 mins Very easy to install. Some people had talked about having to bend the EGR bracket but mine was already out of the way. Seems to have added some power over 300 RPM. Much smoother Idell and transition is good as well. I also added the Flowtech Shorty Headers that were a direct fit and seems to have helped also
    Date published: 2015-09-25
    Rated 3 out of 5 by from Maybe its just my luck Put it on no problem easy change put but now wont idle consistant ,blubery on acceleration and kick down is slow to react kinda falls on its face.im still working on it four days later trying to find a problem but not yet
    Date published: 2019-08-06
    Rated 3 out of 5 by from WON'T PASS CAL SMOG VISUAL TESE HAD MY 91 CHEV C1500 350 SMOGGED, PASSED ELECTRONIC TEST BUT FAIL VISUAL. SEEMS THAT QUITE A FEW TBI WILL FIT ANDEWORK BUT NOT ALL ARE ORIGINAL REPLACEMENT PARTS. CAL IS VERY STRICT ON AFTER MARKET PARTS.IF THE TBI HAD BEEN STAMP WITH HOLLEY 502-9 ON BODY, WHERE WOULDN'T HAVE BEEN A PROBLEM. HAD TO GO TO SMOG REFEREE TO GET IT PASSED. I STILL HAVE TO DEAL WITH THIS IN TWO YEARS WHEN I HAVE TO SMOG AGAIN. I'LL POBABLY BE BACK TO REFEREE AGAIN.
    Date published: 2018-10-14
    Rated 1 out of 5 by from I wouldn’t know! I’m still waiting for it. I purchased this unit for a birthday gift and still waiting for it.
    Date published: 2021-03-17
    Rated 1 out of 5 by from total junk I bought the first one to replace the OEM TBI, it ran extremely rich, as in black smoke and raw fuel from exhaust. I called Holley tech and was told my fuel pressure was too high. Inline pressure gauge installed and fuel pressure was 11 psi as required. per instructions. Called Holley Tech was then told the injectors picked up some trash from the fuel tank. I took the truck to the shop and they attempted to sort it out. After their eval and multiple calls to holley without improvement I called Jegs. I spoke with Jegs, the only solution they had was to try another unit which I had to purchase. when the new unit arrived I took it to the speed shop, they replaced the 1st unit and after installation the butterfly in the 2nd unit sticks open. So $1200 tied up in parts that are not working as advertised, $600 in labor from the speed shop and my truck is still not running right.
    Date published: 2018-03-21
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    Would this work with a 91 camaro? I just recently installed a 350. 

    Asked by: Kkkkk
    This is made to work in a truck application, but depending on this rest of your engine and ECU this could be made to work.
    Answered by: Rusty B
    Date published: 2018-08-28

    Will this working with the factory air cleaner with the double wingnut? If not what air cleaner would work?

    Asked by: 95gmc
    Yes, this will work with the factory air cleaner.
    Answered by: Rusty B
    Date published: 2022-12-31

    Have a 93 Chevy k1500 with 5.7 what would be a good intake manifold to pair with this not building a race car but want a daily driver with balls so any recommendations would be awsome

    Asked by: Squarbear87
    We have a few such as the Edelbrock # 3704.
    Answered by: Dean R
    Date published: 2020-03-29

    I have this throttle body but I'm looking for one to give me more performance, do you have any?

    Asked by: Jonathank92
    This is the most you can do with the TBI setup. You would need to look into a new intake manifold and a different fuel management product.
    Answered by: Rusty B
    Date published: 2018-10-14
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