with 171+ miles on my blazer Im thinking of pulling the smog equiped 305 and intalling a 350. My blazer is an 86 and I really like the price of the 85 back 350 crate engines.for some reason the 86 is alot higher. my question is what is really the difference between 85 and 86. I read where the only difference was the flywheel? I want to keep the ac and Im not going back with the smog equipment. I plan on using aftermarket cam and carb. can I just put and 85 engine in my blazer. thanks in advance for the info.