Wondering if the ls1 fans would be more efficient/cool the coolant better than the lt1 fans I have now? Any other advantages? car has an
lt1.

Are the radiators the same? if not what are the differences?

 

I'm pretty sure the fans are the same, if not very similar. If you are having cooling problems, these cars are designed to run hot by GM. Your best fix for this is a 160* thermostat, a manual fan switch, or a custom tune (PCMforless or MadZ28) to change the temp the fans come on.

 

Radiators are the same until 2000..... As for the fans, Im not at work to tell.....

 

Ok, I checked on the fans. Any 93-95 cars w/o a/c got a single fan. Everything after that, and all 93-02 cars w/ a/c got the dual fans. The motors for the fans is the same for all years, the only thing that changes is the mounting bracket or attacked hardware (for LT1 or LS1).

 

You will notice NO DIFFERENCE in cooling between the two fan set ups.

Radiators are quite different,the Lt1 radiator is actually an UPGRADE to the Ls1 crowd because the rows are larger inside allowing more coolant to flow through.
cast iron needs more cooling capability than aluminum......

 

want to see the dif, just place a 160° thermostat and manual switch for the fans, that works great, or tunne your pc to start the fans earlier madz28, pcmforless or a lt1 edit program, even the hypertech comes with that issue. also to lower some temp if your car is a 95 or lower i believe, eliminate the line between the oil filter and radiator, the tb bypass works,