After the engines arrive from Wixom, the entire front subframe, including the steering rack and radiator, are assembled on a cart. This is the naturally aspirated 427ci engine. The other two engine choices both measure 327 inches but are built with the big-bore LSX block. You can have a 327 with either a 2.9- or 4.0L Whipple supercharger. Though approved for several types of manual or automatic transmissions, the COPO Camaro is only sold with a Powerglide. It’s up to the owner to decide if he wants to install a three-speed automatic or possibly a TKO or Liberty five-speed.