The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - OT: Going from sbc to bbc in my 72 Nova...tips?

jimfulco · 08-06-2004, 02:43 AM

Heater core and cover are different (outlets are in a different position to clear the valve cover).

Big-block Novas also used a different transmission crossmember, since the motor mounts offset the motor toward the passenger side. The BBC automatics were all Turbo 400's, & they use a tubular mount that mounts the tranny support farther to the rear. The BBC stick-shift crossmembers resemble the one you probably have, but again the mount holes are offset to the right. Here's a 1st-gen Camaro (same underneath as a '72 Nova) thread that says you can redrill the standard crossmember: http://www.camaros.net/forum/ultimat...=003396#000000
http://www.camaros.org/trans.shtml#Crossmembers

http://www.chevynova.org/BigBock.html has some motor mount pics.

08-06-2004, 02:43 AM	#11
jimfulco Registered User Join Date: May 2003 Location: Shreveport LA Posts: 3,170	Heater core and cover are different (outlets are in a different position to clear the valve cover). Big-block Novas also used a different transmission crossmember, since the motor mounts offset the motor toward the passenger side. The BBC automatics were all Turbo 400's, & they use a tubular mount that mounts the tranny support farther to the rear. The BBC stick-shift crossmembers resemble the one you probably have, but again the mount holes are offset to the right. Here's a 1st-gen Camaro (same underneath as a '72 Nova) thread that says you can redrill the standard crossmember: http://www.camaros.net/forum/ultimat...=003396#000000 http://www.camaros.org/trans.shtml#Crossmembers http://www.chevynova.org/BigBock.html has some motor mount pics. Last edited by jimfulco; 08-06-2004 at 03:47 AM.