Originally Posted by Howsa289
So when I bought my 65 the engine in it had an over heating issue. New Tstat. Flushed the system 100 times. New head gaskets. New water pump, remember this part. So gave up and bought a replacement 289 which is te mosquito killer some of you got the pleasure I experiencing at the Shelby autobahn show. That engine I just recently pulled to rebuild sometime in the future replacing it with a 70 302 from a friend of mine I took the timing cover and water pump off of the original 289 with the over heating issue and put it on the 302 so the timing pointer is on the driver side and the water inlets line up with my radiator. So, got the 302 running. Runs good, but I have all the same symptoms as the first 289 with the overheating So here are my engines
Engine number 1. 66 289 that came with the carand over heated. The timing cover and water pump are one size. Which is bigger than engine number 2. This timing cover is smooth on top. Aluminum water pump
Engine number 2. 65 289. The timing cover and water pump are smaller. Timing cover is ribbed on top. No over heating issues
Engine number 3. 70 302. I took the timing cover and water pump off engine number 1 and put on this motor for the reasons mentioned above. This motor over heats.
Is there a chance this water pump flows backwards? There has to be something stupid going on with this pump. I'll take the pump off and take a look at the veins. If I can't figure anything out I guess I'll transfer engine number 2's timing cover and pump to the 302. Which I'm reluctant to do since I just put all new gaskets and seals on the 302 but what good are they if the engine overheats right. I know this post is all over the place. Hopefully it isn't too confusing. Anyone have any ideas ?
I heard someone tried octane booster, and it worked for them. No telling how much was shaved of the heads. Wanna see flow, remove the tstat and point the upper hose to the side. Do this with water only.