The big night came and I fired up my freshly rebuilt 455. Now for the record I had it bored 30 over. I am running 6X 4 heads 3 angle valve job done not shaved. I am running stock rocker and timing chain. My cam has duration of at 050 inch Lift: 224 int./234 exh. I have a HEI Distributor and Qjet carb for a 1974 455 with a Edelbrock performer manifold. The oil pump is a Sealed power high-pressure oil pump. Now the questions I was only running for 5 min. I was breaking in the cam
1. My oil pressure is 60 PSI is that to high 2. I was already over heating so I checked the exhaust on the passenger side. I had less back pressure compared to the driver side. Now the exhaust manifolds are stock 1968 400 with the butterfly valve. I checked the valve before installing and it worked great. I check it with the motor running hot and it was open, The passenger side of engine heads was really getting hot that is why I shut it down.
I did not have a chance to time it or even start to line it out I was just going to run at 1500 rpm for 30 minutes. Any ideas
1. My 350 with the RA IV pump always runs at 60 PSI so don't be worried about that.
2. Not to be Captain Obvious but was there fluid in the radiator, and if so, was it flowing through the engine?
The engine is new, and tight, so it will generally run hot initially. It would be nice to have a mechanical gauge to get an idea of how hot the engine was truly running.
Keith, The obvious guess, without having any hard temp data, is a head gasket problem on the passenger side. Did it run good? Is this the engine with the mismatched heads? Jim
Did you make sure to leave the cap off the radiator in order to "burp" the system? When I fired mine up for the first time I had to keep adding a lot of fluid. You should try and time it while it's running. Too little advance can cause over-heating. Just twist the distributor counter-clockwise if you can't get a gun on it. A mechanical temp gauge is cheap and easy to hook up so you know how hot it's really getting. Good luck.
You really need to get that timming set. That will cause overheating problems. Keep a water hose on the radiator and keep your engine cool and finish your break in.
Just curiouse why your keeping the exhaust valve?? Thats the first thing I chuck.
