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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Autonutz on May 28, 2017, 12:57:46 am

Title: 81 k20 carb switch questions
Post by: Autonutz on May 28, 2017, 12:57:46 am

Bought this gem off an old fella, its got a Holley replacment carb in place of the rochester and a lack of vac ports lol.
The Holley on it now has been going downhill and is in need of a rebuild. I've found a very similar holley locally that comes with a rebuild kit for super cheap, its off of a 69 camaro.

First two pictures are the holley on it now and the model stamp.
Third picture is the holley for sale.

I see the difference in the choke assembly but other than that very close.
Should be a straight swap i just have to figure out how and where to run another vacuum line to the choke right?(https://uploads.tapatalk-cdn.com/20170528/31e3e430717a43e8c67d951c19d443f5.jpg)(https://uploads.tapatalk-cdn.com/20170528/d5f6d79b443a100478e0374e7dfb5d96.jpg)(https://uploads.tapatalk-cdn.com/20170528/1495401d88190d3fd576d9b08cd2dae4.jpg)

Title: Re: 81 k20 carb switch questions
Post by: bnoggle on May 28, 2017, 10:43:31 am

I think a straight swap should work. You could run the second choke vacuum line off the first with a T connector. The main difference is probably going to be the adjustments, since there will probably be different mixture and idle settings for the two different engines.