pwrtrip75

iTrader: (8)

How limited is this much stroke due to the piston skirts coming out of the bottom of the cylinders more? 6.0L block.

To get 1200-1500hp would that be stupid with this much stroke? Or would the ideal way to do it is sleeve the block or use aftermarket block?
or just build a smaller cubed engine to do it?

Reason I ask is I have a 421 rotating assembly and am on the fence which way to go. Lunati crank, and custom made Wiseco pistons. And or course I want to spend as least amount of money as possible.

Thanks.

PREDATOR-Z

IMO best option is a LSX block.

pwrtrip75

iTrader: (8)

In a perfect world yes.... Heavy and cost way too much. not going to happen.

Isolde

iTrader: (4)

At this level, the strength of journal overlap, and piston stability, are far more helpful than a few extra cubic inches.
Use less stroke.
It'll also save the rings.

pwrtrip75

iTrader: (8)

Thats what I was thinking.... sell it all and start over. Oh well.

LS6427

iTrader: (2)

You're looking at spending $20,000 or more for just this powerplant....if you want a real, reliable, well built 1,500 hp set up.

So why not do it smart and use an LSX block with a 4" stroke or maybe a 4.1" stroke. The extra weight, after machining, will be around 80 pounds. Meaningless when what really matters is reliability, strength and longevity.

A resleeved aluminum block, prepped and ready to assemble.....will cost more than the LSX block to be ready......and be weaker and less reliable.

You want the strongest possible.....you can sleeve the LSX block too..........grey iron supporting ductile iron sleeves.....badass. And yes, its been done...contact Steve at RED.

.

pwrtrip75

iTrader: (8)

Sorry that is idiotic logic. It can and will be done for less than half that. Thats FWHP... realistically looking for 1000-1200whp max.
This is a turbo car by the way.

95FbFormula

iTrader: (25)

on a turbo car there is no need for that much stroke when a properly set-up 408 with boost can get you close to there now are you talking SC, T or TT

pwrtrip75

iTrader: (8)

Thank you, I realize that now. I collected this stuff a few years ago. Turbo, most likely big single.

brianw401

iTrader: (4)

Well built, 8:5 compression, 400+ci. engine with over 20lb. boost may get you there. Dependability? I just don't know the absolute limit of the lsx aluminum block. Although, look at Henessy's new 1,200hp. Venom GT. It has the aluminum LS3 vette engine with a twin turbo system. Yes, the block has been fitted with Darton sleeves. But it is still the stock block. Just my $.02!

LS6427

iTrader: (2)

I'm talking about the entire set-up....turbo kit, long block, top end, fuel system, PCM, tuning and all. Good luck doing that for $10,000. If you do it will explode on start up.

I agree, 1,000 WHP will be quite easy, as its been done to death. Screw it, all you need is a good resleeved block. Strongest one of them all is the old LS1 block, btw. According to Steve at RED.......I was thinking you meant 1,300-1,500 WHP....that small increase is a HUGE undertaking....and expensive to do it right.

.

pwrtrip75

iTrader: (8)

Turbo kit I build myself. probably $2500. for all... w/ a 88mm or bigger turbo, WG, intercooler, piping, and all the material. Injectors maybe a grand, and then anything further would technically not be the powerplant. The engine (only the engine, not turbo setup) Complete If I had more than $5k into I would shoot myself.

And you are wrong about the strongest blocks....The strongest block to use is a Gen IV 5.3 or 6 liter aluminum truck block which have solid main bearing webs - no breather holes to weaken the block.