[cortezl78]

I have a 69 L78 original car with a ZD radiator tag. It is a straight neck radiator and had only 2 or 3 cores previously. I thought all L78s would have a 4 core so I had the radiator recored with a 4 core. Clutch fan now doesn't fit in without removing water pump studs. It is so close I cannot believe it won't hit the radiator. I read that all L78s with a 4.10 would have the 4 core. Is the ZD correct for my car and should I have it recored again to a 3 core? I have a 4.10 rearend in the car. How did they fit the four core in? How does the curved neck radiator allow the clutch fan to fit?

[Mark C]

L78's used the same radiator as the L34, and L35's which are 3 core readiators unless you ordered the HD cooling system which changed it to the bent neck 4 core radiators.

As to why you don't have enough clearance with a recored radiator, I would suspect that there is a difference in the height of the mounting brackets that brings the 4 core radiators closer to the core support. ZD is the proper code for a 4 speed 396 radiator, and it's a 3 core unit. UY (and UZ?) are the codes for a heavy duty 4 core bent neck radiator. Which was used on all 396's with A/C and all the COPO cars, (L72, ZL1)

[ 03-18-2003, 02:40 PM: Message edited by: Mark C ]