I've seen several places that carry a heater box for a big block Chevelle in their Chevelle catalogs. I've never seen a big block Chevelle running one of these but I have on the early Camaros. Is this just a early Camaro box? Would you use like a '69 Camaro big block heater core in one of these because the Chevelles only list one heater core for the non-AC cars? Just curious because I'm in the middle of putting a 454 in my original small block 1971 Chevelle and am curious if it would be worth the money to do the swap to the big block heater box.

http://restorationpartssource.com/store/Chevelle_1968_1969_Heater_System_Parts.htm

Here's a picture of it:


http://images.dr3vil.com//files3/51/Big%20Block%20Chevelle%20Heater%20Core.jpg

i have a sb car that i put a bb in and had no problems w/ the heater box on the eng side . even w/a/c i put in a factory unit and no problems w/ the bb . but w/ stock value covers hope this helps