Join Date: Dec 2012
Location: GTA, Ontario, Canada
98Sonosls is offline
Re: Radiator for LS Swap
Don't solid mount your radiator to the core support using brackets. First the vibration is hard on the radiator core and will crack it at the tube welds. Second, your core support is steel, the vette rad, is aluminum IIRC. What happens when you bolt steel and aluminum together with a liquid electrolyte (rad fluid). Yes, you'll get galvanic corrosion along the path of electrical flow from anode to cathode.
Ensure the radiator is isolated with rubber grommets/pegs at all 4 corners.
While modern coolant mixes have a good amount of corrosion inhibitor protection in them, following best practices helps avoid issues, otherwise you'll be one of those guys complaining you've gone through 3 radiators in 5 years.
Also... don't ground strap your radiator either. You do not want your radiator being your path to ground for any stray voltage in the system. Direct grouding the engine block and a cylinder head are the best ways to mitigate stray voltage.
Vibration, dissimilar metals, stray voltage. 3 issues, make sure you address all of them or you'll be getting new rads sooner than later.