[3757chevy]

A big block radiator is a little wider and thicker but No taller than small block or six cylinder radiator. It looks like you may have a square body radiator, I have used that size before with 69-72 style hood without clearance problems. but it wont clear 67-68 hoods. The top picture shows my spacers I used to make mine fit standing upright but the '67 hood would not close . In the second picture you can see I had plenty of room to tip the radiator back and mount at an angle allowing to shut the hood. I hope that helps.