Here is a stock L33 (5.3 4L60E) with factory 4.10 gears. out of 06 Silverado. this one has 243 heads on it. the computer is newer but maybe the maps will help. Has factory electric fan settings.
Here is a stock L33 (5.3 4L60E) with factory 4.10 gears. out of 06 Silverado. this one has 243 heads on it. the computer is newer but maybe the maps will help. Has factory electric fan settings.
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