Not all air cleaner tubes are created equal
 

Here is a comparison of two presumably small block heated air cleaner tubes. The white longer unit is correct for 4wd 1970-72 350 engines. I'm unsure what the other tube, which is black and shorter is correct for. The shorter black tube bolts on and fits the air cleaner, but it will clock the air cleaner snorkel closer to the brake master cylinder.

The original tube on my 1970 Blazer 350 was rough, so it was discarded. Fortunately, I had 2 spare correct long tubes, and 2 shorter tubes.

Re: Not all air cleaner tubes are created equal
 

Good information. Thanks

Re: Not all air cleaner tubes are created equal
 

The shorter tubes were pulled from a '70-'72 truck sometime in the '90's. Just not sure if 307, or 2WD...

Re: Not all air cleaner tubes are created equal
 

Can you tell me where up obtain the sticker on side of air cleaner ? Thanks

Re: Not all air cleaner tubes are created equal
 

I purchased mine from LMC. At my house in 48hrs. Part number 38-0160 Decal-Air Cleaner. $8.95 plus $5 to ship in padded mailer.

Re: Not all air cleaner tubes are created equal
 

Thanks man I appreciate it..Jack

Re: Not all air cleaner tubes are created equal
 

This 1970 307 C10 appears to have the short tube.

https://67-72chevytrucks.com/vboard/...6&d=1682874463

Re: Not all air cleaner tubes are created equal
 

The decals have part numbers, and bonus those lead to the right air filter.

Re: Not all air cleaner tubes are created equal
 

The 6485382 part number corresponds to the air cleaner assembly as per the GM parts books:

Re: Not all air cleaner tubes are created equal
 

The small block carb air heater tube part numbers are as follows:

1969-72 307 Exc. oil bath or 4WD

3951374

1969-72 ALL 350 Exc. oil bath

1971 307 series 20-30

1972 307 4WD

3951484