electric fan info

I got my van on the road last year about labor day week-end. 318/edelbrock manifold. edelbrock 4 brl. and a new alluminun rad i was stuck in a hiway traffic jam with no were to go. the van started running to hot . it has a factory fan. what should i be looking @ as far as a fan.?? electric?? if so what size ?? i know nothing about electric fans. i do not have a shroud on the van. it was a /6 and the shroud was to small. if i install a electric fan should i remove the stock fan all togather. or run both .or buy a differnt fan blade. thanks in advance...

Get a 3200cfm electric fan, measure the width of your rad and get a fan that will cover most of that width. Put it in front of your rad.. That way you can turn it on when you need it or hook it to come on when the temp reaches a certain level. I would remove your stock fan and get a flex fan that way you have a pusher and a puller. My 347 stroker never got hot not even in 115 degree weather.

vanishingbreed is right. I use a pusher fan and works great in the stop in go
traffic. Keeps from putting needless wear on the motor.I use a 16 inch
pusher fans on all my Vehicles.It has the quick connects that mount on the side of the radiator and not those straps that go through the radiator.
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By far the most powerfull electric fan available is the 17" Toruas 2 speed fan or the 18" lincon mark VIII 2 speed fan from the mid 90's high output cars.

Thats all I needed to control the heat at any speed in my V8 65 G van. There is a southern california hot rod builder and towing guy who designed a relay set up to run this fan.

Theres a bunch of links for you to look at on this link.

https://vintage-vans.forumotion.com/t12244-cool-down-that-engine

Read the testimony on this link 10th window down
https://vintage-vans.forumotion.com/t20536-keeping-it-cool#80450

M1D

For heavy traffic on hot days I put in a 16" Hayden Automotive 3710 electric fan (available at summit and nearly everywhere else), it's 1500 cfm and pulls about 16 amps. I have it wired from the battery and switched with a 30 lighted switch so I can turn it on and off when I want it. It's set up as a pusher fan on front of the radiator, I replaced my OEM 5 blade mechanical fan with a Summit heavy duty six bladed fan, the summit fan was cheap and it moves a lot more air.

A 16" electric fits nicely on the bottom of the radiator, I mounted mine low so it would push "fresher" air out of the air dam instead of recirculating hot air. What temp thermostat are you running? I put a 160 in mine since I live in GA and its ungodly hot here in the summer, that made a big difference as well.

also, from what I remember the A100 charging system is only 40 amps total (or is it 60?), Id be real careful with what amperage fan you get so you don't let the magic smoke out of the wiring harness.

The fan:



view from the top:




Summit 17" Heavy Duty Six Bladed Fan
Part Number: SUM-G4920:


I mounted the switch in a piece of 3/4" angle iron and mounted it to the bottom edge of the dash so I didnt have to drill the dash, it's also easy to see the light in the end of the toggle when its lit, get the switches at any parts store.
in this pic is middle left by the clutch pedal:

I wouldn't get a fan with less than 2800cfm but I live in So.Cal near the desert.