BB conversion, which fan shroud?

[Ed's 1970]

Hi all,
I am still gathering parts for my resto-mod 1970. The car was a small block 350/350, and I am putting in a healthy 540 big block with easily 600 hp. I want it to look factory if possible so I am sticking to the fan shroud, stock fan and fan clutch setup. I purchased a griffin aluminum radiator which fits perfect in the original radiator support, I believe it is 26" center to center on the bottom brackets. My question is which fan shroud will work, is there one which will just bolt-on?
Happy Holidays!
Thanks Ed

 

[6880 Mike]

My advice is the check the '70 assembly instruction manual to see whether there were two radiator supports for 70, big block and small block. If so, you will want the big block support, brackets, seals, shroud, fan, and fan clutch.

 

[Ed's 1970]

Thanks Mike, I forgot to mention that the radiator support I have is original to the car and is in very good condition, so I want to reuse it. I believe the big block support has wider bottom brackets and will not work with my griffin radiator. Well is there any reason a small block shroud would not work on a big block? I don't know what the actual differences are.

 

[6880 Mike]

...is there any reason a small block shroud would not work on a big block?...

Possibly not.

... I don't know what the actual differences are...

Round steel, like 68 and 69, or fiberglass depending upon how the cars were equipped.