72-CLASSIC_RIDE Posted January 20, 2022 Share Posted January 20, 2022 Hi all, looking to replace my heater hose clamps with hopefully the spring style clamp but not sure if will prevent leaking. Has anyone used a similar type to eliminate those ugly looking screw type clamps? Replacing Water Pump and looking to clean up look with a cleaner look when back together. Any guidance helpful.................... Also replacing factory hose nipples for bypass and heater hoses with stainless as I expect it will not build up the sludge around nipples............ Doug Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted January 20, 2022 Share Posted January 20, 2022 Hi. I used these from Ground up. Match the originals. And look good. Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 21, 2022 Share Posted January 21, 2022 If you want a clean look, use the Gates Power Grip, heat shrink clamps. Newer cars use them, they seal good. Downside is they are single use clamps. I had them in stock from some work I've done on Corvettes, so I used them when I went thru my Monte. I'll be using them on the Z/28 when that goes back together. This site below has a good chart to determine what size you'll need, however they can be picked up anywhere like NAPA, Amazon, etc. I usually shop for the best price and buy them there. https://www.verociousmotorsports.com/Shop-by-Brand/Gates/Gates-PowerGrip-SB-Hose-Clamps 4 Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 21, 2022 Share Posted January 21, 2022 Cleans it up a lot nicer than a bunch of metal hose clamps... (Part of an intercooler system upgrade after heads/cam/injectors, pulleys, etc on a ZR1. Installed those systems on a few ZR1's & CTS-V's in the shop, used those clamps wherever possible/practical). 1 Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted January 21, 2022 Author Share Posted January 21, 2022 Thanx for the suggestions guys. I'm considering those spring clamps that you squeeze 2 tabs together to open and releasing tightens them around Hose(s). Not sure they are strong enough to prevent leaking but smaller, only need pair of pliers and less obtrusive. If that isn't the solution, will look at both above but those original clamps can be a pain to remove while any leak from the heat on clamps would require additional work if stranded away from repair shop, but considering. Doug Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 21, 2022 Share Posted January 21, 2022 I keep regular hose clamps of the necessary sizes in the tool box, just in case something happens on the road. 2 Quote Link to comment Share on other sites More sharing options...
Scott S. Posted January 21, 2022 Share Posted January 21, 2022 17 minutes ago, jft69z said: I keep regular hose clamps of the necessary sizes in the tool box, just in case something happens on the road. As long as you have the good ones.... Those cheap knock offs don't hold very long and strip the threads way too easily. 2 Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 21, 2022 Share Posted January 21, 2022 54 minutes ago, Scott S. said: As long as you have the good ones.... Those cheap knock offs don't hold very long and strip the threads way too easily. I've worked in the chemical and power gen industries for a lot of years, lol. No cheap, Harbor Freight stuff here 😁 1 Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted January 21, 2022 Author Share Posted January 21, 2022 Another question. Has anyone bought a replacement Water Pump Bypass Hose? Looking around, I haven't seen any made specifically for the BB engine. I remember making my own originally and tore it up attempting to remove it and can make another but was interested if one could be had. Rethinking the Heat Shrink system also. I bought Stainless Steel Nipples to replace those cast ones and got from suggestions made in another Post and thanx for that. Currently rounding up those pieces I need to put New Water Pump on and in meantime, cleaning those places and touching up with paint where needed while I can still get to them. Again, thanx for all the info. Should eliminate mostly my trial and error approach................... Doug Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 21, 2022 Share Posted January 21, 2022 I looked pretty hard for a molded hose for that w/p bypass at the time. Not available anywhere, and if so not at a reasonable price. The Dayco Hose website simply gave a bulk 3/4" hose part number for that very part, which is what I ultimately used. You just have to cut it to a near perfect length and manipulate it so it goes on both nipples. Make it long enough so it doesn't come up short, but not too long so that it kinks up and restricts flow. If you use the heat shrink clamps, just make sure you install them on the hose first, lol. Another little tip, a bit of 'Brake Cleaner' on a rag will clean off the stenciled part numbers from those hose clamps, to make it look nicer. Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted January 22, 2022 Share Posted January 22, 2022 https://www.topflightautomotive.com/products/auto-accessories-of-america-1965-1974-chevrolet-corvette-water-pump-bypass-hose-396-427-454/ 1 Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 22, 2022 Share Posted January 22, 2022 1 hour ago, Paul Bell said: https://www.topflightautomotive.com/products/auto-accessories-of-america-1965-1974-chevrolet-corvette-water-pump-bypass-hose-396-427-454/ That looks like it's for a Corvette short water pump, may be too short for our engines. Dayco has one too #70647, but it's a short water pump hose too. When I looked up for a long water pump version (Chevelle, Monte, etc), it listed bulk 3/4" hose. Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted January 22, 2022 Share Posted January 22, 2022 You may be right Joe. This one is listed for a Chevelle. The clamps look like the ones I couldn't find earlier to post here. https://www.ss396.com/chevelle/CPH-1658.html Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted January 22, 2022 Share Posted January 22, 2022 With the long water pumps the curved hose was not used. I purchased all the cooling hoses and clamps for "Barn Find" from Ground up. Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 22, 2022 Share Posted January 22, 2022 3 hours ago, Paul Bell said: You may be right Joe. This one is listed for a Chevelle. The clamps look like the ones I couldn't find earlier to post here. https://www.ss396.com/chevelle/CPH-1658.html Those years, 1965-68, even for Chevelle would be a short water pump too I think, Paul. 1969 and later came with the long water pumps, except Corvette, which I think still had short pumps. NAPA (among others) has that style of clamp, typically they use that type for Fuel Injection hoses, as they're rated for higher pressures and a full grip around the hose. Tom, my 2 crate LS6's from the late 1980's came straight from GM with a bit of a molded hose, but like you said....it's never to be found again, lol. Quote Link to comment Share on other sites More sharing options...
Paul Bell Posted January 22, 2022 Share Posted January 22, 2022 I used to have the correct hose saved in my PC, I think it was a Dayco but I can't find it. I certain it's one of these but you'll need to figure out what looks to fit best: https://www.bing.com/images/search?q=bypass+hose+for+1970+chevelle+454&form=HDRSC2&first=1&tsc=ImageBasicHover Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted January 22, 2022 Author Share Posted January 22, 2022 I don't believe you will find that particular Hose & will have to make one, as I did originally. That Hose was cut to 4" length, .750 I.D. and at minimum 1" O.D. That is the Hose seen in my photo above. It will be just a matter of forming/fitting a replacement. Summits shipping my new water pump and stainless pipe nipples as I type, so will hopefully have everything together by then. Appreciate all this information Guys, Doug Quote Link to comment Share on other sites More sharing options...
Grant MacPherson Posted January 22, 2022 Share Posted January 22, 2022 I always use 3/4 hose with a stainless steel spring inside so that it doesn't flatten out and maintains its round shape. Quote Link to comment Share on other sites More sharing options...
Scott S. Posted January 22, 2022 Share Posted January 22, 2022 I had a similar issue with the 3.8 L in my '86 Buick..... Wound up using a hose that was originally designed for a dodge mini van. It worked, but was still a pain to install. Quote Link to comment Share on other sites More sharing options...
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