Re: 1970 Chevelle LS5 convertible block code
Either this is a joke, or you better hold off selling until you figure out what you have.
CRR is an LS6 TH400 Code. The last 9 digits should match the VIN.
I would think you would know if you had a numbers matching LS6 Vert as you'd be sitting on a 1/4 Million or so.
But if an "authentic" LS6 block was installed, it will increase it's worth.
I'd verify that number again, and if it is truly CRR, then I'd take a very good close up photo and post it for authentification.
An "original suffix" stamped LS6 Block can be worth $10K by itself.