PREDATOR-Z

What would be the benefits of a 383 LS6 block stroker VS LS1 stroker?
Target would be 500rwhp N/A and 150 shot nitrous.

Any feedback would be great.

Blue Hawk

I don't think there is any advantage with the LS6 block. Actually, the LS1 block may be stronger and better suited for a high hp application.

The main advantage of stroking an LS6 engine over an LS1 is the heads. You will probably got around 20 more rwhp with ported LS6 heads over ported LS1's.

PREDATOR-Z

Next Year project: LS6 block or Ls1 (383)
I know LS6 have better oiling at crank journals and are a little less weight. Strength is irrelative till 700rwhp+ then LS1 is the choice.
Would the LS6 block be warranted for lubrication purpose. AFR heads and probably a R1 or G1 cam.

cyphur

iTrader: (10)

why is the LS1 block stronger then the LS6 block? i'd think if you're only trying to go to 500 then stick with the LS6.

jermstyle

If you are building an engine from start to finish. Why not just go with the LS6 block for your base? There’s nothing wrong with the LS1 block, but the LS6 has better breathing and oiling characteristics. There was a local shop that built two engines exactly the same. One had a 2002 LS1 block and the other had a 2002 LS6 bock. Both used LS6 heads and were blue printed to a T. The LS6 engine made 12 more HP on the same engine dyno, same day same fuel same cam same everything.

I know two LS1’s could be 12hp apart, but it’s something to think about.

TAQuickness

iTrader: (28)

It's all up to your budget. I came really close to buying an ls6 block for my stroker. I didn't see any real advantage to using the LS6 block, so I spent the money elsewhere.

PREDATOR-Z

That is what i was thinking about.

PREDATOR-Z

That is what i was thinking about.

The price is significant though.But for a top notch shortblock?..Hmmm

cyphur

iTrader: (10)

For $1200, you might as well just wait for the LS2 block. That should be become available this fall sometime(November maybe? hopefully.. ..) Then you'd have a great aluminum 6.0L. More horses baby, yea!!

PREDATOR-Z

Yeah, I can wait. As a matter of fact those are my two choices. The only benefit from LS6 so far is it is a direct bolt on, no fitting mods.

Ben R

The LS6 block will be fine. The LS1 block is slightly stronger and better for re-sleeving purposes, but unless you're building a Max-Effort 383, the LS6 block will do just fine.

PREDATOR-Z

I would be trying to hit 500>530rwhp N/A W/150 dry shot N2O. ~650

TTtop

iTrader: (6)

I just got my MTI built LS6/383 back from them yesterday after adding a Meziere EWP/LSX 90mm Intake/Fast 90mm TB to the engine.

The car was dynoed 2 weeks ago before these new mods, #'s were: 451rwhp/440rwtq.

Dyno #'s after new mods were: 479rwhp/469twtq.

If I switch to 1 7/8 headers from current 1 3/4 FLPs, do a X-pipe dumped exhaust from current I-pipe to cut-out, do lighter rims like Bogarts, and do some Harland Sharp roller rockers...I might sneak up on 500rwhp, but it would be close.

I could also have the heads milled some to raise compression up say a full point, that would gain too, but I would have to start running some race gas in every tank for daily driving...Randy

PREDATOR-Z

How much did that whack you $$$ ??
I saw 5995 + exchange so let's say 1200 core $7200.0 ???

Bill's 02 Z-28 SS

Hi Folks
My Point is GM has two blocks (LS1 & LS6) - they would not go to expense for the LS6 unless it was better. I have to think GM know how to do things and is in the business to make money. If the LS1 block could do the job, we would not see a LS6 block. One other point, I believe the Cam bearing holes are large than the LS1 (they both can use the same Cam bearing diameter) - it is the outside diameter of the bearing that is large for the LS6.
Just my two cents.
Bill
PS: Predator-Z, watch out for those camels on the road - for everybody, this is not a joke.

TTtop

iTrader: (6)

Yeah, that's about right..with the Moser 12-bolt included the total came in at just under $10k, not bad and I don't have to fill N2O bottles all the time!...Randy

PREDATOR-Z

LOL, I've been here since 96, that is only a side road problem. Main HWY is fenced on both sides, 3>4 lanes each, some of the best roads in the world IMO.

I think people crossing everywhere is more of a problem. Maybe we should fence them too. LOL

Boosted LS1

LS6 block has better breathing and should be stronger being sand cast instead of die cast. At the end of the day it probably doesn't matter all that much as both should be pretty strong