Hello, cause I didn't get a telefon contact with the truck shop I'll ask some of you here. Did someone know if these part from the truck shop is the right part for my truck engine? I need a gas filled capillary tube temp sending unit? Look here: http://www.scribd.com/full/9744366?access_key=key-2jisr1kyee11tc4b2rh6 If this link doesn't work look at the cataloge for chevy PU site 32 left top. Ask Wolfgang
Wolfgang, Don't order a part yet until we get some more advice from people who have the 235 engine exchange! My 235 engine in the 53' has a non-original aftermarket electronic gauge. You have the 216 original gauges which worked with the older mechanical type capillary tube temp gauge. They won't work with the 235 which has the newer electronic sender. I have a similar problem in my 47', I think the capillary tube got crimped somewhere in shipping after it was rebuilt and does not work. i want to change it out to a electronic sender. I hope some of the more experienced guys have some advicefor us. Flashlight
That link wasd for the entire catalog . I am using the original 1949 temp gauge in my 1957 235 , most folks do with no troubles .
Thanks Nate, Doesn't the 235 have a larger diameter sender then the 216? Is there an adapter? That will change from the original electronic sender down to the older, smaller mechanical temp sender on the left rear head? Or the other way, is there an electronic gauge that is able to be fit into the stock gauge cluster on the 47'. That way, I could run the simpler and more readily available temp sender on the 235 head. I would much rather deal with an electronic sender if possible. I tried using the GMC electronic sender to my gauge cluster, it requires the special hot water flange on the front of the motor. No one makes the original GMC 50's temp sensor. I've bought two used ones at swap meets and they don't calibrate on the bench. I gave up on them! Flashlight
Reducer bushing Flashlight, yes there is an adapter that you can use with the later 235 heads. Our host sells them, as well as any good hardware store. http://www.classicparts.com/1947-54-Temperature-Sender-Reducer-Bushing/productinfo/24-811/ My 235 is from a '62 panel truck and I used a reducer bushing and the original setup works fine. Ken
If I remember the later engines use a 1/2 npt and the earlier a 3/8 npt so a 1/2 to 3/8 bushing would do the trick. I always keep several of the temp bulb adaptors on hand and also use them at the back of the intake on a V8 to keep from having to have one of Jim Carters high dollar extra long capillary tube senders made to fit the stock V8 location. Just grind a flat spot on the rear water runner on the drivers side, drill and tap 3/8 npt, screw in the adaptor and your ready for the factory sender bulb with slack left over. You can drill into the water jacket anywhere there's enough meat and use one of these. On the 500 Cadillac engine in the 51 GMC I brazed an adaptor into the rear freeze plug on the left head so the stock sender would reach.
Late To Class Again So the question was already answered but yes , there is indeed a bushing and it comes in the box of each and every aftermarket gauge sold , often gone missing by the time they try to sell it to you.... So just cruise over to the Weatherhead cabinet and grab the 3/8" > 1/2" NPT one Even mentioned , it's a $2.95 part and Bourdon Tube mechanical temperature gauges are always more accurate and work independently of the electrical system too , a good thing if it ever overheats .
