Well you could make a little bit of cooling gain with a large 2 row aluminum radiator. But the next step looks like custom core support time. Every row added to a radiator is less effective than the one in front of it. That's why you don't see radiators with more than four rows.
If I was going down the custom core support road I would go with a 2 row 3 pass radiator aluminum radiator. Hopefully out of a late model vehicle. You loose water volume but gain cooling in that the water passes the fans three times.
Here is a link to larger cooling fans.
http://67-72chevytrucks.com/vboard/s...d.php?t=722863
And a second link on radiators you may not have seen.
http://www.pirate4x4.com/tech/billavista/Cooling/
P.S. The engine sounds fun.
__________________
Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help.
RIP Bob Parks.
1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo
If it breaks I didn't want it in the first place
The WMB repair thread
http://67-72chevytrucks.com/vboard/s...d.php?t=698377