any place selling the vac hose to these heater control units for a 68 442 ? pictured in assembly 401205 ,

 

Nearly all (most) automotive parts supply stores have rolls of vacuum hoses in stock (often located in the back/side room). Either bring in a piece (or pieces) of the vacuum hose(s) you're replacing, or measure the ID &/or OD to match up what you need.

EDIT: You purchase by the foot. Just tell them the length(s) you require.

 

The vacuum hose used for GM HVAC controls is smaller diameter than what you will normally find in an auto parts store. Also, the factory vacuum hose harness assembly has ends molded in place. Correctly replacing one of these hoses (which are also color-coded, by the way) is difficult at best. I recently went through this on one of my vehicles. I'm not aware of repros of the complete vacuum harness.

 

thanx chief i think they are very small diameter and never could find this size

 

Sometimes it's hit or miss with stocked inventory. I wasn't aware of difficulties associated with correct hoses, as Joe indicated. I found a couple sources on-line for "used" 1968 442 HVAC hoses - by the individual "piece". As per Joe, hard to come by I guess.

 

pretty sure your correct joe, i hear a hissing noise and it wont switch from floor to any vents. hope just a hose popped off

 

And, sometimes you have to get ingenuous/clever employing various plastic couplers to accommodate...Good Luck.

 

very hard to get to also, 4spd console and bucket seat may come out so i dont cripple myself lol

 

Understand. Been there too many times. Thankfully I'm limber. My '71 CS convertible top switch recently went Tango Uniform. Really looking forward to its R&R - not so much.

 

Ames perf does a variety of color striped hoses.

 

They do, but the Ames hoses are 5/32". The factory hoses are 1/8". Corvette repro houses appear to sell the smaller colored hoses.

 

While I will not be 100% happy about accepting my dad's Corvette when he decides he is too old to drive it (as I want him to drive it), it, at least, will have better aftermarket support than Olds.

 

1/8 being the ID?

 

Yes, hose is dimensioned based on the ID, since the thickness can vary depending on material and construction. Unfortunately when trying to replace these HVAC hoses that fit into the molded end fittings, the OD also matters.

 

Check these hoses:

https://www.oldairproducts.com/produ...05-vacuum-hose

DescriptionOld Air Products Rubber Vacuum Hose Kit. Comes with 8 Colored Hoses for an Easy Install

This kit is perfect for repairing and routing vacuum lines. Includes 8 total hoses. 7 of the hoses measure 63-1/2" which include 2-black, 1-red, orange, white, purple, and green. The 8th hose is a thick black hose measuring 50". All are 7/64" in diameter except for one that is 7/32"

Made in the USA!4

 

Nice find. Thanks.

 

Here is another using Joe's point on the Corvette sites, does not give specifics on the hose ID, but looking at the tees but give a feel towards it.Corvette America 1971-1975 Chevrolet Corvette Heater/Air Conditioning Control Vacuum Hose Kit. (topflightautomotive.com)

 

thanx everyone, i got the control out and found the orange and green per pic were off, and wouldnt stay on. i snipped a bit off on all 5 , pain in the butt lol