is there anyway to tell by looking if a block is turbo 2 or na if all you have is a block. friend bought a 13b but it has a aftermarket carb intake on it pretty sure it wasnt a 13a but could be wrong havnt looked at the block yet.

 

Remove intake. 4 port is turbo unless its a old school block if i recall? 6 ports is n.a

 

thats right i remember reading that some were now thanks