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piecesparts · 08-28-2009, 09:59 PM

Let's go back to the first input on ths thread. You stated that you put in a new radiator, new pulleys, new engine, and you claim the system is pumping properly. The first engine blew up due to the heat, so you understand that the proplem was there before the change out of the engine. Now you have put in a set of aluminum pulleys that are the same size as before and have removed the T/stat. I would think that there has to be something that you have NOT changed that is causing the problem, since it is still present with your new setup.

Do you believe that the air flow through your radiator is good? You stated that you have a cooler for your tranny and an A/C coil up front, have you verified that the fins are clean and letting air through them to your radiator? I have an 84 truck with a stroker motor along with a tranny cooler and A/C coil with basically the same pulleys that you are running and I do not have an issue with the cooling. I used to run a standard radiator with a stock fan connected to the water pump. I now run an aluminum radiator with a set of electric fans from "BeCool" and they work great. The change was my choice, since the system was cooling properly prior to the change. I definitely would look at the coils in front of the radiator and make sure that you are getting air into the core. I would also look for ANY place that air could be "short circuiting" the radiator and not going through the fins for cooling. In other words, is it coming from behind the radiator and feeding into the fan? If the shroud is gapped improperly, that could cause this. Put at least a 180 degree T/stat in (that is what I run with no issue, but the 195 will work also). The problem is inside the engine bay and not inside the engine, it has to be part of the truck's setup--since the problem has not changed with the updates that you have performed.

08-28-2009, 09:59 PM	#39
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Cooling Issues Let's go back to the first input on ths thread. You stated that you put in a new radiator, new pulleys, new engine, and you claim the system is pumping properly. The first engine blew up due to the heat, so you understand that the proplem was there before the change out of the engine. Now you have put in a set of aluminum pulleys that are the same size as before and have removed the T/stat. I would think that there has to be something that you have NOT changed that is causing the problem, since it is still present with your new setup. Do you believe that the air flow through your radiator is good? You stated that you have a cooler for your tranny and an A/C coil up front, have you verified that the fins are clean and letting air through them to your radiator? I have an 84 truck with a stroker motor along with a tranny cooler and A/C coil with basically the same pulleys that you are running and I do not have an issue with the cooling. I used to run a standard radiator with a stock fan connected to the water pump. I now run an aluminum radiator with a set of electric fans from "BeCool" and they work great. The change was my choice, since the system was cooling properly prior to the change. I definitely would look at the coils in front of the radiator and make sure that you are getting air into the core. I would also look for ANY place that air could be "short circuiting" the radiator and not going through the fins for cooling. In other words, is it coming from behind the radiator and feeding into the fan? If the shroud is gapped improperly, that could cause this. Put at least a 180 degree T/stat in (that is what I run with no issue, but the 195 will work also). The problem is inside the engine bay and not inside the engine, it has to be part of the truck's setup--since the problem has not changed with the updates that you have performed.