[A26B]

Originally Posted by jrd1990zr1

Jerry,

According to the NCRS manual.

"The 1990 ZR-1 Corvettes with serial number 00019 to 00913 have radiator hose clamps of a worm gear design. All the radiator clamps used are of the same configuration and manufacturer." It goes on to talk about the manufacturer "Tridon", country of origin is Canada. As part of a recall the worm clamps were replaced with spring clamps due to leak conditions.

It also says "The 1990 ZR-1 Corvettes after serial number 0914 and all 1991 ZR-1 Corvettes have radiator hose clamps of a spring ring type and are gray or gray-black in color."

I do not see any notations regarding markings on the spring type clamps.

Both my 1990 ZR-1 #2124 and #2529 had the spring type clamps all around.

Hope this helps, John

Very much so John. Thanks. I'm going to keep adding any info that comes my way in case something develops later.