I've been building up parts for a 3sgte swap into my gt, and the last thing I need is the actual engine.
I've been searching the local jdm importers, and most of the engines they have are gen 5 st246 engines, and they're all in the 800-1000 dollar range. The gen 4 engines are all in the 1200 dollar range.
I know the gen 5 is a center feed manifold, and has a funky exhaust/turbo cast thing. It supposedly makes 260 crank, and has a higher rev limit, but mostly is just a newer engine, so less miles. That aside, what are the actual differences? I've read that the 5th gen has weaker rods or something of the sort, and also that the ecu is junk?
The plan is to put the 3s in mostly stock, while I have my 5s block built up on the side. The motor would be ran at around the 250 range until I pull the bottom end for the 5s block. Then the power goal is around 450.
I figure the minor 'downsides' of the 5th gen I've read about won't really matter after I swap the 5s bottom end in, and go with aftermarket manifolds and a bigger turbo, but I don't know enough about either motor to say which is better or worse for my purpose.
Would the 5th gen work for my goals? Or am I better off getting a 4th gen for a couple hundred more?
Any help on this topic would be great.