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SVTPerformance's Chain of Restaurants
Road Side Pub
LT1 experience? Step inside please
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<blockquote data-quote="Black2010" data-source="post: 15980256" data-attributes="member: 126428"><p>They run hot and what you described doesn't sound that off bases. It's been 15 years or so since I've been around an LT1 and it was on a Corvette. Good friend had a Z-28. Both suffered from the same issue, lack of airflow while sitting still. First thing I would do is hook it up to a scanner to validate that the temps are as high as you are seeing on the dash. It's not uncommon for the dash to be off quite a bit. Next, if it really is running hot and you want to get it running cooler look at having the fans adjusted. Forget about a lower T-stat. The stock should be 195 (unless my memory fades again as well) so at 210+ it's already fully open. A 180-160 stat is going to be just as open at that point. It will just take longer to get to that equilibrium. </p><p></p><p>Keep in mind though that normal operating temp is around 210ish so 215-220 in a hot summer day sitting in traffic with AC blowing (should be turning the fan on with the AC anyway) is really not abnormal. Running a car to much cooler can actually be a problem as well as the tune wont be right and it may not get warm enough to burn off the moister in the oils.</p><p></p><p>Lastly, (again trying off memory). I don't recall if the LT1 or it started with the LS1. Their may be a crossover tube for the heads. It could be blocked which would prevent coolant flow across the heads. </p><p></p><p>Honestly, from what you describe it sounds pretty close to normal so cooling things more would just go into the mental comfort level (been their as well).</p></blockquote><p></p>
[QUOTE="Black2010, post: 15980256, member: 126428"] They run hot and what you described doesn't sound that off bases. It's been 15 years or so since I've been around an LT1 and it was on a Corvette. Good friend had a Z-28. Both suffered from the same issue, lack of airflow while sitting still. First thing I would do is hook it up to a scanner to validate that the temps are as high as you are seeing on the dash. It's not uncommon for the dash to be off quite a bit. Next, if it really is running hot and you want to get it running cooler look at having the fans adjusted. Forget about a lower T-stat. The stock should be 195 (unless my memory fades again as well) so at 210+ it's already fully open. A 180-160 stat is going to be just as open at that point. It will just take longer to get to that equilibrium. Keep in mind though that normal operating temp is around 210ish so 215-220 in a hot summer day sitting in traffic with AC blowing (should be turning the fan on with the AC anyway) is really not abnormal. Running a car to much cooler can actually be a problem as well as the tune wont be right and it may not get warm enough to burn off the moister in the oils. Lastly, (again trying off memory). I don't recall if the LT1 or it started with the LS1. Their may be a crossover tube for the heads. It could be blocked which would prevent coolant flow across the heads. Honestly, from what you describe it sounds pretty close to normal so cooling things more would just go into the mental comfort level (been their as well). [/QUOTE]
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SVTPerformance's Chain of Restaurants
Road Side Pub
LT1 experience? Step inside please
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