L83 TO L86 INTAKE, THROTTLE BODY OPTIONS

[BigPac]

picked up a used l86 intake manifold for 100$ and looking into different throttle bodies, i know the acdelco 12669871 for $403 off the 6.2 is standard, but amazon has oem 12673449 for $155 CDN. I believe it needs the adapter to work. But $$ its still cheaper. Any one have any experience ?

 

[Joseph Garcia]

You get what you pay for, AT BEST. Amazon has many 3rd party vendors who substitute cheap knockoffs for OEM GM parts.

 

[BigPac]

OPPS , 12669871 for $403 off the 6.2 is THE 95MM but amazon has oem 12673449 for $155 CDN ITS ONLY 80MM

 

[Doubeleive]

picked up a used l86 intake manifold for 100$ and looking into different throttle bodies, i know the acdelco 12669871 for $403 off the 6.2 is standard, but amazon has oem 12673449 for $155 CDN. I believe it needs the adapter to work. But $$ its still cheaper. Any one have any experience ?

katech ports oem throttle body's, so this is a plus/plus and it's plug-n-play
I put one on my silverado in 2019, no issue's

Katech LT1/LT2/LT4/L86/L87 CNC Ported Throttle Body

For Gen 5 LT1/LT2/LT4/L86/L87 engines

katechengines.com

 

[Carlos Mendoza]

picked up a used l86 intake manifold for 100$ and looking into different throttle bodies, i know the acdelco 12669871 for $403 off the 6.2 is standard, but amazon has oem 12673449 for $155 CDN. I believe it needs the adapter to work. But $$ its still cheaper. Any one have any experience ?

GM Genuine Parts 12678223​

87mm $187

 

[Carlos Mendoza]

I’m looking forward to doing this swap on my suburban. I ordered a ported setup from chuy454 and i believed that’s the part number TB it comes with.

 

[NYBRD]

I went with the LT5 95mm tb with lingenfelter tb adapter to chuy454 ported l86

 

[NYBRD]

I’m looking forward to doing this swap on my suburban. I ordered a ported setup from chuy454 and i believed that’s the part number TB it comes with.

Chuy does really good work

 

[Carlos Mendoza]

Chuy does really good work

First time customer and I was not disappointed! Great service. Removal & install was very easy. The hardest part was manual cleaning the intake valves . I’m glad I put on a catch can shortly after purchasing it.