- Sep 9, 2012
- 112
- 1
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I have a 68 mustang coupe with automatic and 289 engine, a/c, ps.pb. I just had the heads changed out. I had edelbrock e-street heads with the 1.9 valves installed. I used comp cams aluminum roller rockers. I also had edelbrock cam installed at the same time along with new high performance water pump, edelbrock timing set. I gave the mechanic a new premium 180 deg. Thermostat to install which I later found out he did not do. Instead he put in an orifice with 5/8” hole. The car never ran hot before the head and cam change but now I cannot drive it because the temp shoots up very fast and will overheat if I don’t shut it down. I let it get to 230 then shut down. I tried putting water on the front of radiator as a test to see if that would bring the temp down much indicating that the radiator is too small. The temp only dropped less than 10 degs. The rad is oversized by the way 22”. The mechanic told me I had to buy a monster radiator with elec fans for about $1600 plus install.
I called edelbrock and discussed it with them. The first thing the guy said was did you drill the steam vent holes. I checked with the mechanic and he did not drill the holes. Edelbrock says it should not be running any hotter than before the new heads if installed correctly and that the steam vent holes not being drilled will definitely cause overheating.
Does anyone have any experience along this line? And how much difference in temp do you think it would make? Do i need holes and new radiator? All comments appreciated.
I called edelbrock and discussed it with them. The first thing the guy said was did you drill the steam vent holes. I checked with the mechanic and he did not drill the holes. Edelbrock says it should not be running any hotter than before the new heads if installed correctly and that the steam vent holes not being drilled will definitely cause overheating.
Does anyone have any experience along this line? And how much difference in temp do you think it would make? Do i need holes and new radiator? All comments appreciated.