[cdoggy81]

Having owned both & gone down this path you can make anything work if you throw enough $$$ at it That being said it is easy & cheap to do it with a LS & you don’t need a lot of displacement. This is why I don’t think you see a lot of over 500 CID LS.
I went down this path for my last build. I wanted ~600hp at the crank (500hp at the tires basically) & fuel injection. What it was going to cost me to get to that going all Pontiac was more than I wanted to spend. Enter the LS solution...
I took a 48k mile bone stock LS3 ( that’s 6.2L or 376 cid for the non LS guys), had the heads ported, put in a mild cam (225/232-.595”/.610”-112LSA), a set of 1 7/8” headers with 2.5” exhaust & hit those numbers. MPG is close to 20 with a 3.42 rear & a 26” tire. Even with a 295 width & 220 traction rating tire I can’t floor it when taking off as it shreds the tires. Those who say LS have no TQ clearly have never driven in a built one. If this engine ever goes south on me my next step up would be a 408 stroker. From there a LSX454 but I’ll just tell everyone it is a 455 😎