Those 2 are quite different in size.
Northern Rad #205199
21 3/4 x 21 3/4 x 3 1/8 and Shroud #Z40107
Champion Cooling #CC1643-5
22-5/8" (H) x 29" (W) x 2.75" the core is 26"W, 29"W includes the mounting brackets.
I have the Champion
CC1643B for our 69 G3 6.1 Barracuda Fastback.
I ordered it directly from champion but I had them replace the 1.5" inlet with a 1.75" inlet to match the size of the thermostat opening. I figured if it was going to need a 1.75" hose, it might as well fit on both ends. “¯\_(ツ)_/¯“
I also replaced the full radiator core support with US Car Tool's Full Core Support and set it up with the opening to fit the 26" wide Champion Core width.
It is a nice fit.
I am using the
Champion PN#1643FS12 Shroud
My fans are 2x
Spal 12" 1328 CFM Fans PN#30101522
Seeing your work, you would probably make a better shroud and save money at the same time.
Its just a flat piece of aluminum with a total of (2) 90* bends, one at the top and one at the bottom, 4 mounting holes and 2 fan holes for 12" fans that are smaller than they need to be...
I trimmed some of the narrow top and bottom off to move it about 1/8" closer to the radiator core.
I also opened up to holes on mine to 12" to fit the fans better.
The holes were closer to 11" when I got it...
For mounting the shroud, I cut slots to allow hex head 1/4"-20 bolts to slide into the radiator face, where the shroud mounts. You can see the (4) 1/4-20 bolts pointing away from the radiator through the shroud. Same 1/4-20 stainless bolts and washers mount the fans, held together with stainless nylock nuts.
We are running a ZF 8HP70 8-speed, so we will be connecting the transmission to the included built in trans cooler.
All in, it seems to be a nice setup. I'm getting used to almost everything needing a little refinement so I don't make to much fuss about having to make it "Just Right" for me...
Sorry, I can't tell you how well it cools but I have heard from others that it works for them.
I was originally going to try a single 16" fan but it was 1600 CFM and the 12" Spal fans are 1328 + 1328 or 2656 CFM combined. Will set them up for 1 or 1+1 based on demand.
Oh, and the 12" fans have more clearance from the front of the engine than the singe 16" in our car, by a couple inches. I like that a lot more too.
It's sitting in my office right now, as I have been working on it and test fitting it all together before I paint it all black.
View attachment 1715859053
This is my Radiator except I had them change the inlet to 1.75"
View attachment 1715859058
This is the shroud.
View attachment 1715859076
