Originally Posted by mgoblue9798
Originally Posted by turbobitt
My opinion since I have just made a swap from big aftermarket aluminum to factory type stock,

I would just spend the money on a Glen ray replacement with the max cool option. Use the factory fan, shroud, and thermostatic clutch. Put a FlowKooler water pump and you won't be disappointed.

I had a fairly large aluminum radiator with a nice custom dual fan setup. It worked OK and never overheated but the fans draw way to much current and wreak havoc on the factory wiring and bulkhead connector.

My Challenger has a 572 Hemi with aluminum heads and 11:1 compression with a decent size solid roller cam and I swear the Glen ray radiator, stock fan & shroud, Hayden thermostatic clutch w/FlowKooler pump runs way cooler than the aluminum setup and electric fans.

Allan G.


As you experienced running electric fans through the factory wiring is asking for problems. Got to run a relay hooked directly to the starter relay lug or battery. That and have an upgraded alternator of at least 100amp minimum.


All of what you mentioned was done but that's not going to fix the problem. No matter where the fans take the power from, the alternator still needs to make up the current draw and it all goes directly through the bulkhead and to the amp gage. A bigger alternator aggravates the problem by pumping more power through the bulkhead. The best way around it is to run a 8 gage or larger wire from the back of the alternator directly to the battery to bypass some of the charging current from the amp gage and bulkhead,
AG.

1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.