The generous YJ engine bay allows for a comfortable, clean fit for GM Small Block V6, V8 and even Big Block V8 engines. These Jeeps are a most excellent powertrain swap platform, with their inherent durability being greatly upgraded and complemented by versatile GM power. Dec 20, 2014 · three, does the transmission need any adjustment for the new engine. Thanks 😀 Hoping to swap with a 350 tpi from a chevy truck when I get the $$$$ and time[/quote] Oh ya, that’s an easy swap that me and friend just did on his truck. 1. Yes it should fit, you may have to check the engine mounts though. 2. Next step up would be a set of cast iron Vortec Heads ($259 each brand spankin' new) and a GMPP TBI intake manifold (another $250) to fit the new heads and TBI unit.
Headgasket blew recently so I decided to do a Vortec head swap since she's ripped apart anyway. I've got the set of heads ready to buy locally, and this intake: It's a SUM-226018, square-bore Vortec intake to match the heads. Plans are to get a square bore carb to TBI adapter to essentially make it all bolt-on.