Fellow ls-1 er's and lt -1 er's listen up.
I had a 93 z28 lt-1.
I liked the power ,style, handling ect.
Had only 80k miles.
I sadly sold it and kept my 200,000 mile mustang 5.0.
Help me z-er's.
Seemed like these cooling fans never came on in hot weather with air cond on or any time until the needle on the temp gauge was damm near in the red.
I heard G.M. designed them that way for better gas mileage and passing emission tests.
I still like these f bodies and am considering another .
I know that these high temps are hard on head gaskets .
Ive heard it's common for them to go on an LT-1 at give or take a 100,000 miles.
With the design if these engines under the hood ,i can imagine that a shop might charge $1,000 or so i guess.
I can imaginee the work involved.i have worked on cars and changed plugs on my old LT-1 8 hours for me.
i wouldnt want to change head gaskets in one.
Questions, experiences info please!!!!!!!!!!!!
Are the ls-1's just as head gasket failure prone too cause of the high temps these cars are designed to run at??????

 

Owning an LT1 for 13 years, and following the cars for the last 10 years on multiple forums, I've never heard of any unusual failure rate on the LT1 head gaskets. Like any aluminum head, you will do damage if you allow the engine to severly overheat, and those are the ones that lose the head gasket.

The LT1 is programmed for the low speed (or fan #1 in the earlier cars) to come on when the A/C is turned on. The fan "on" temperatures in the stock programming are set at 226* for the low speed (or #1 fan) and 235* for the high speed (or #2 fan). If your fans never came on in the summer, there was something wrong with the power supply or relays, because they should come on as programmed.

 

http://web.camaross.com/forums/showthread.php?t=540909

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