Will efans off a 98 trans am work on my 99 z71, or will only the ls1's work.
Will efans off a 98 trans am work on my 99 z71, or will only the ls1's work.
Yes, they work. 98 and newer f-bodies fans are the same wether it's a V6 or an ls1.
02 SCSB Sierra with a cup holder
01 ECSB Sierra my wife's truck
01 Pontiac Sunfire my beater
No problem with fitting the radiator coreYou'll have to fab up some bracket support. My LS1 fans left about a 2.5" gap on each side of the shroud for a 28" radiator. I fabbed up a couple of shroud extensions out of Lexan to help seal the main shroud and improve flow. Note that I installed the fans so the shroud does not touch the radiator fins.
For fan control, you can use a thermostat type controller (i.e., Flex-a-Lite VSC). A more integrated way is to control them with your PCM. In either case you'll need a good fan harness. Nelson Performance sells a custom harness, PCM or VSC, that works seamlessly.
You won't regret the effort to do this mod.
Base: 2004 Victory Red Silverado 1500 2WD RCLB, LR4, 4L60E, 3.73, HD Suspension, P245/75R16 Tires
Mechanical/Performance: Nelson 93 Octane Tune (See Slamma's CarDomain.Com Page for more details)