The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Adding a FAST 102. What do I do for an aircleaner?

Accelo · 02-04-2023, 02:32 AM

I measured the OD is just over 4.200"
I also remembered I used a OEM Silverado intake sleeve to adapt the 4" tubing to the much smaller stock LS1 throttle body. To recap, the stock TB is smaller than 4" and the Fast TB is almost two tenths larger. Will be fun but I will get it. Thanks for the tip, I will look into the Intakehose.com. I have gotten some great links from Chevytruck's members.
I did find a straight reducer the size I needed.
The 4-1/4" end fits on 4.15" through 4.25" MAFs and throttle bodies, including the FAST 102. Also many lids.
However, my intake needs to make a 90 right out of the TB. I have some more checking to determine if this will possible work.
Cheers

02-04-2023, 02:32 AM	#6
Accelo Registered User Join Date: Mar 2015 Location: washington Posts: 2,162	Re: Adding a FAST 102. What do I do for an aircleaner? I measured the OD is just over 4.200" I also remembered I used a OEM Silverado intake sleeve to adapt the 4" tubing to the much smaller stock LS1 throttle body. To recap, the stock TB is smaller than 4" and the Fast TB is almost two tenths larger. Will be fun but I will get it. Thanks for the tip, I will look into the Intakehose.com. I have gotten some great links from Chevytruck's members. I did find a straight reducer the size I needed. The 4-1/4" end fits on 4.15" through 4.25" MAFs and throttle bodies, including the FAST 102. Also many lids. However, my intake needs to make a 90 right out of the TB. I have some more checking to determine if this will possible work. Cheers Attached Images Last edited by Accelo; 02-04-2023 at 02:43 AM.