Flanders 46 Report post Posted March 30, 2020 There's a 90 degree fitting on top of my original intake manifold that connects to the heater core pipe. Is there a part number for this, or were can I source a new one. Threaded on one end, small lip on the other end. I was going to re-use my original one on the new intake, but it's a bit banged up plus I it's in the stock manifold so tight I'm not sure it's ever coming out. Quote Share this post Link to post Share on other sites
aslanefe 333 Report post Posted March 30, 2020 17 minutes ago, Flanders said: There's a 90 degree fitting on top of my original intake manifold that connects to the heater core pipe. Is there a part number for this, or were can I source a new one. Threaded on one end, small lip on the other end. I was going to re-use my original one on the new intake, but it's a bit banged up plus I it's in the stock manifold so tight I'm not sure it's ever coming out. Is this what you are asking about? Make sure it has the right thread. Quote Share this post Link to post Share on other sites
Mike65 475 Report post Posted March 30, 2020 Flanders if you are putting the fitting in a aftermarket manifold you might need an adapter, I needed one for my Edelbrock manifold. Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted March 31, 2020 Fantastic. Thanks folks! the threads in my intake manifold are the same as the threads on my original coolant temp sensor (5/8" diameter hole), so not quite sure if that's going to screw right in. I'd have to get an adapter fitting too. At least I know what to search for now, thanks! edit: can these be found at a plumbing store or anything? I'm going to need one that's a bit 'taller' to clear some of the edges on the manifold. Kind of like this: https://www.cjponyparts.com/90-heater-hose-fitting-1968-1970/p/HHF4/ Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted April 2, 2020 Not at a plumbing or hardware store. A good auto parts store like NAPA might have something. Summit Racing has a larger selection of NPT to hose fittings. You can probably find a fitting that will work without any adapters. I ended up with stainless steel fittings from Summit Racing. For an aluminum intake manifold, a stainless steel, aluminum, or brass fitting is a better option than a steel fitting. Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted April 20, 2020 lol dagnabbit, this one isn't going to work (can't even thread it in, won't rotate around the throttle body!). I'm piecing together a few brass pieces now, hopefully doesn't look too bad. I might end up just plugging this thing and bypassing the heater. Just need something reliable to plug the water pump outlet -- I see on here that the rubber plugs aren't a reliable solution. Not sure if I want more make-busy-work of putting in the marine water pump that has no heater outlet yet... Quote Share this post Link to post Share on other sites
aslanefe 333 Report post Posted April 20, 2020 17 minutes ago, Flanders said: lol dagnabbit, this one isn't going to work (can't even thread it in, won't rotate around the throttle body!). I'm piecing together a few brass pieces now, hopefully doesn't look too bad. I might end up just plugging this thing and bypassing the heater. Just need something reliable to plug the water pump outlet -- I see on here that the rubber plugs aren't a reliable solution. Not sure if I want more make-busy-work of putting in the marine water pump that has no heater outlet yet... Can you put one or two 90 degree elbows between the fitting and intake? Quote Share this post Link to post Share on other sites
jmlay 80 Report post Posted April 21, 2020 What brand and model intake? Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted April 22, 2020 https://jiminglese.com/ 8-stack EFI for 351W Quote Share this post Link to post Share on other sites
1969Fstback 58 Report post Posted April 22, 2020 If you can find one of these the correct size you could put a nipple on it after you screw it in. Ha, Lowes would have them in the pipe section, but I think your motor may look a tad to nice for that. Quote Share this post Link to post Share on other sites
Vicfreg 771 Report post Posted April 22, 2020 I had interference issues also. I used a AN style 90 degree "push on" elbow. See pic below. The lower part of the 90 is a AN fitting female nut. It allows the 90 degree elbow to rotate, then you tighten it in the position you want. In the manifold you use a AN male to NPT male fitting. I rotated mine to the rear. Worked great. Quote Share this post Link to post Share on other sites
Flanders 46 Report post Posted April 23, 2020 ooo I like that AN fitting. that's a good idea. I ordered a few brass fittings from amazon (exactly what 1969FstBack posted) but may not be pleased with how they look. Thanks! Quote Share this post Link to post Share on other sites
jmlay 80 Report post Posted April 24, 2020 An fe water pump has a strait fitting for the heater hose. I do not recall the thread size. Might be worth checking into. Quote Share this post Link to post Share on other sites
