Exactly why I said I didnt do it. More wear than your 6.0 after just about 3000 miles sounds like a hell no in my opinion.

If you are willing to do whatever it takes for power, or refresh it often (you can only bore and hone a block so many times once its brought out to 4.030) then go for it. I wasnt... simple as that.

 

A stroker with a sleeved block doesn't have those issues. Probably not the most cost effective way to make 550 to the wheels tho.

 

Hour much is a sleeve job?

 

I will be going aftermarket block in the next couple years to solve this problem and not have to pull it so often.
pretty much every motor I have ever built I pull every season and get it looked at for peace of mind.

 

I think maybe 2500 for a sleeved block ready for assembly.

My stainless steel trick hot side was 500 less. With the wastegate vented to the downpipe.

 

yea I have a 94 GMC Yukon wit a 6.0 LS from a 2003 Chevy Silverado and I want to build a 415-418 bored and stroked. Doing the research on it everybody say it’s a future problem waiting to happen due to the fact that the cylinder walls will be to thin for that application. So you can make the same power from a 408 that you can make from a 418 just 25 hp less which you’ll never notice on the street but you can still make 423hp on a 408cid stroker motor and it will be stronger. Also you can put a supercharger on that and build more reliable horsepower wit a 408cid then you can wit a 418cid

 

A LS3 with cam will make 475rwhp.
I've never put a naturally aspirated 408 on the dyno but I would hope it made more than 423hp. A L76 6.0 with cam only made 410rwhp. A LQ4 or LQ9 will need to be taken from a 4" bore to a 4.070 bore and 4" stroke to make it a 416.

For a daily I wouldn't want to use a 4" crank. Majority of the stuff I build uses the stock Crankshaft and the setups get 3000-4000 miles a month put on them.
I'd go with forced induction before I went with a 4" or 4.125" Crankshaft. I know how many trouble free miles I have put on a turbo 6.0.

 

Yea I seen Richard Holdener dyno a 408 LS striker motor and a few other ppl had a 408 wit some custom heads or ported LS3 heads NA and it made 619-625hp but mainly 623hp wit Richard and he basically told and recommended me to go wit a 408

 

I daily my blown 408, I love it. Have about 7k on it since it was built. Do it right and they will last.

 

how many hp do it have