i swapped in a 95 LT1. since the swap, it has seemed to run cold. now that i need the heater, this is true. i can drive it for long periods of time and it doesnt seem to heat up enough. the fan seems to come on way early. i replaced all the fan switches and all the sending units, and even the thermostat. what else can i do?

 

Did you have the PCM reprogrammed? It may be programmed to have the fans come on at a very low temperature.

 

Have you tried a warmer t-stat? Maybe a 195 or 210?

 

Use a piece of cardboard to block part of the airflow to the radiator.

 

cardboard will work temporarily. i got the pcm from pcm for less. he was suposed to make it factory. i have an e mail into them to see what the problem is. i havent heard back from them yet. i havent tried a warmer thermostat, i camn tho if the pcm thing doesnt pan out.
should i remove the air dam?

 

I wouldn't remove the air dam, it might make it too hot. Without it the radiator doesn't see much airflow.

 

Removing the air dam is a bad idea

 

i think engine is at right temp, did some checking, heater is just cold. i know the heater core is ok. how does a guy hook up the heater control valve with this swap? maybe i have the valve going to the wrong nipples.