Looking to hear from the guys who have aftermarket aluminum radiators in their 64-67 skylarks. I have been looking around and measured the factory radiator which has an overall width of around 25.5 " and height of 18.5" the core is 20.5" by 17" trying to find a similar sized aluminum radiator and electric fan set is just turning up either ones that won't support much power or are very costly. Hoping someone can share what they are running and where to find them, without breaking the bank. Thanks in advance
I'm running a Griffin aluminum radiator in my `65 (1-55242-x) and a Flex-A-Lite S-blade fan with a shroud (FLX-180). You can look them up with those part numbers in Summit. I like that the Griffin tanks are rounded as opposed to the welded tanks I've seen on other cars. I painted mine black so it blends in and looks more factory. The fan works great. It has an adjustable control on it to suit your needs. I have mine set to come on at 180 and it shuts off at 160. It brings the temp down pretty quickly, too. If I had any complaints about either it would be the fan is a little noisy, but it's not on that much so I've gotten used to it.
What Ive found is that you need to be more specific. My 64 had a V6 and was repowered with a 465 (455) with makes a lotta heat. The V6 was a small downflow and I retrofitted a '65 core support to accomodate a much larger 3 row cross flow from Champion Rad's. I got a great deal (I think) for 150.00 drop shipped to my door. If you are starting with a V8 1965 car, half your troubles are over! Right G.O.65??? ws
Check the specs for the radiator. As has been stated here many times - you want at least 1" tubes. 2 rows are fine. They work on a different principle than brass/copper.
Thank you all for the responses I was just speaking with my dad as I bought the car from him I had assumed the car was originally a big block car but it was 67' 340 car when built. However from another parts car he had years ago we have a 67' 400 core support in our garage that we are going to measure and take a look at
Griffin two row with a custom 90 degree bottom outlet to make it easy to connect to the water pump. I fit two Spahl fans in as pullers and it works great, even on a hot day in traffic or staging lanes. The Spahls have one of the highest cfm rating I could find and are excellent quality. If you have anything more than a stock motor, don't even waste your time with engine driven fans. I tried for years. You won't find any fan guard that fits either. Upgrade to a high output 1 wire alternator (12SI) and generous wire sizes to the fans.
Griffin alum in my 67 Tried dual spal electric fans. Temp would creep in traffic. Ended up with a high pitched 18 inch 7 blade fan and severe duty clutch . A modified 340 shroud on my 400 to keep cool in traffic .
Good article in the June 2020 Hot Rod on SPAL fans. The new brushless fans drop the max amp draw from 60 to 40 amps. The also recommend 2, 3, or 4 fans of appropriate size spaced to cover the most area of the radiator. Of course that may require a custom shroud.
I'm in the same boat with the Original Poster here.. The radiators for our '67's are considerably smaller than other years. Since some of you skipped over measurements, I'd also be interested to know: A.) What size radiators you were able to fit B.) What size fans // shrouds were you able to fit C.) What are your new engine temps at various speeds in hot weather Specifics are greatly helpful. Thanks for all the info fellas, -PS
I run the Griffin 1-55242XS radiator In my 65. It is the stock configuration of the factory 300 crossflow radiator. I use the very same 65 300 corssflow radiator hoses that was on the car.
I realize this post is getting some age on it now, but I've ordered a Champion Part #: AE571 Double-Pass radiator. I'm planning to put the 17" mechanical fan back on with a reproduction OEM shroud to get a benchmark for cooling. I'll be back home in a couple of months to fit it up and try it out.. God willing, the motor will be ready by then so I can get her back on the road. However, I anticipate following up the cooling solution with a an aluminum shroud, and SPAL 3010-7100 brushless 16" fan with 165* relay. But that is an expensive setup. Especially considering I'll need to bump up to a 12si alternator for the additional current draw. The tech at SPAL told me that even though their brushless line of fans have a "soft-start" technology, they still recommend an alternator of +100 amps. I'm only sitting with a 63 amp 10si model at the moment. So at $400 for the fan, $100 for the shroud, and a wholloping $300 for the wiring//relay kit (WizardCooling.com), PLUS the cost of the 12si alternator, it's going to be an expensive cooling solution..... but it just seems like such an awesome product that I can't help but want to try it out.
I'm running a Summit flavor 2row 1" tubes 16" Derale flex no shroud and a Flow kooler water pump In my 65 with a 462 runs at 180 will creep to 190 on really hot days 95plus. Chris
I fought overheating problems from day one (1976) when I bought my 67 GS. *Ameritech aluminum radiator stock appearing tanks painted black. *TA super water pump. *water weter additive *factory clutch, 18"fan and shroud. All good now.
For less than all that I got a US Radiator copper and brass 4 row desert cooler that requires no modifying the Car and will cool a 500 hp big block easily. And if it develops a leak it's repairable by any radiator shop.
Although it wouldn't fit in the factory location, I used a Ron Davis double pass with high cfm dual fans. I told him it needed to keep 1200 hp cool and he said it would. So far he's correct, but I'm also running E85 now which is much cooler to start with. Btw.... this was a $1400 unit.