Replacing Worm Gear Hose Clamps with Tower Clamps

I've started replacing my worm gear clamps with correct for 63/64 tower clamps and started with the radiator hose clamps on the top and had to screw the 2 1/16" top clamps almost all the way to get them to tighten.  After running the engine I noticed I had a drip leak on the top radiator side clamp and I pulled the hose and clamp and noticed that the worm gear clamps had compressed the hose considerably. 

Given the fact you don’t have as much tighten range with the tower clamps, it just doesn’t get a good grip when installing directly over where you had worm gear clamps. 

To stop the leak, I cut the hose back about an 1.5” and reinstalled the hose applying anti-seize to make removal easier and to help seal, and now have no leaks.  My hoses were replaced just over a year ago with my engine rebuild and look good other than the compressed  rings from the worm gear clamps, however, I went ahead and ordered a set of new AC Delco hoses off ebay.  

I think given the fact we tend to over-tighten the worm gear clamps and they leave a compressed indention ring on the hose anyway, it is a good idea to install new hoses if going back to the original style tower clamps.

tagged - tower hose clamps

Views: 2028


You need to be a member of 63/64 Cadillac Website to add comments!

Join 63/64 Cadillac Website

Comment by Jason Edge on May 23, 2013 at 9:24pm

Yes, they were used on the heater and radiator hoses.

Comment by Charles Harris on May 23, 2013 at 9:13pm

Were these clamps used on heater hoses as well as the radiator hoses, I am about to take out my whole heater system, since i can't get the compressor pulley off, I might as well change out the hoses, thinking about replacing the heater core....even though it's not leaking.

Comment by Jason Edge on May 19, 2013 at 11:15am

Just to add a good source for clamp kits are the online Corvette Sites. I have another set of Wittek clamps with 1st qtr 1964 date stamp on the way I picked up from a Vette site. Usually not that particular for date stamps but for only $10 over other sets out there I have a set with date stamps on the way.


Comment by Russ Austin on May 19, 2013 at 11:00am

Good post.  The worn gear clamps have a tendancy to loosen up.


  • Add Photos
  • View All


Question: comfortable highway speed?

Started by Mark Geertsma in General Discussion. Last reply by Jeff Kinzler 8 minutes ago. 14 Replies

What is your preferred cruising speed on highways with your classic Cadillac? What I mean is the speed that allows for relatively quiet and comfortable cruising without slowing down other traffic.…Continue

Tags: speed, Highway

T-3 Headlight History

Started by Jason Edge in Restoration Discussion 1 hour ago. 0 Replies

                                  T-3 Headlights 1956 to 1972  - 1956 7"…Continue

Stainless steel side trim

Started by Tony and Ginny 429 in 1963/64 Cadillac Specific Discussion. Last reply by Charles Fares 15 hours ago. 2 Replies

Have you noticed the stainess steel side trim on the CDV the convertibles and other models in our years cars is in the-- EXACT PERFECT location to help prevent any damage happening to the paint on…Continue

Tags: trim, side, Stainless

1964 NOS fabric for sale

Started by Steven Aaron in 1963/64 Cadillac Specific Discussion. Last reply by Steven Aaron 19 hours ago. 1 Reply

NOS Dark green cloth used in de Villes. 1-2/3 yards.Please text me is you are interested. $50 +shipping. Thanks, StevenContinue

Blog Posts


Posted by Mike Petrey on January 13, 2019 at 12:25pm 7 Comments

Where do the flashers go in my 64 Deville Convert.  I'm thinking that's why both turn signals stopped working.

Source for Motor mounts and Trans mounts 1964 SDV

Posted by Norman Silverman on January 9, 2019 at 4:23pm 2 Comments


Where is the best place to purchase good quality motor mounts/trans mounts for my 1964 SDV? I see that Rock Auto has them for $8 and change, and others for $24 and change. Big difference. Is there a better place to buy them from?



Fuel loss in Carburetor

Posted by Ian Osborne on December 29, 2018 at 11:24pm 16 Comments

Lately if I haven't started my '63 in four or five days it seems that the carburetor has gone dry. The starter cranks for an extended period of time and the engine doesn't come close to firing. I have resorted to pouring a little fuel into the carb to save the starter and battery. This gets it started and it runs fine. It also starts fine after sitting a short while - a couple hours or so.

The fuel pump is new and there is always fuel in the glass bowl of the fuel filter. This, along…



Posted by John Rueff on December 19, 2018 at 4:24pm 3 Comments

I would like to upholster my caddy back to original.   Does anyone know where I can look at some pictures or photos.  Also, how hard is it to remove the dash?  thanks


  • Add Videos
  • View All

© 2019   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service