Carbureted LT1 Overheat?
08-05-2020, 08:11 AM
#1
Carbureted LT1 Overheat?
I have some serious concerns that I am hoping someone can help with. To start things off I have been running my set up with a cammed and carbureted LT1 for years without having the temperature run over about 205 with my fan running. Typically closer to 195. I have installed a 100 shot of nitrous and following recommendations switched to a colder plug (NGK TR-6). I found 1 fouled plug in cylinder 8 while changing the plugs. Additionally, the NGK gaps are much tighter than the stock plugs which I read is needed for nitrous.
Now the car sits at 200 at idle and within a quarter mile in my subdivision reaches 220, even with the fan on.
Did I fix a problem by removing the fouled plug or cause one by switching to colder plugs with a tighter gap?! Obviously a fouled plug is a bad plug but is this running temperature normal?
I checked timing and initial is at 12. 22 degrees mechanical advance on distributor for 34 degrees total.. seems about right for a safe 100 shot hit based on recommendations from NOS and other guys running spray.
Any thoughts?
Now the car sits at 200 at idle and within a quarter mile in my subdivision reaches 220, even with the fan on.
Did I fix a problem by removing the fouled plug or cause one by switching to colder plugs with a tighter gap?! Obviously a fouled plug is a bad plug but is this running temperature normal?
I checked timing and initial is at 12. 22 degrees mechanical advance on distributor for 34 degrees total.. seems about right for a safe 100 shot hit based on recommendations from NOS and other guys running spray.
Any thoughts?
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camaronut79
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