Stroke kit help and opinions
Thread Starter
Staging Lane
Joined: Oct 2011
Posts: 55
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Stroke kit help and opinions So it seems like I got some knock. I think it's time to stroke my ls. I'm currently running stock ls6 block with 2.5 243 heads, ls7 lifters, tourqer v2 cam and a 102mm intake(ported) and tb. New billet lightweight steel flywheel and stage 3 monster clutch. 2.5" true duals out, 43lbs injectors.
Any opinions on the 4.1 x 3.9 stroke and bore?
Any kits suggested?
Dyno numbers?
Cost and all?
Etc.
Any help with how about I should go with this would be great. Don't know much about v8's since I'm a proud owner of a ls powered nissan 240.
Any opinions on the 4.1 x 3.9 stroke and bore?
Any kits suggested?
Dyno numbers?
Cost and all?
Etc.
Any help with how about I should go with this would be great. Don't know much about v8's since I'm a proud owner of a ls powered nissan 240.
Last edited by flipmike22; Feb 11, 2013 at 06:12 PM.
I would not go more than a 4" stroke on a LS6 block. The 4.1 and 4.125 cranks pull the piston down too far out of the cylinder bore which causes excessive wear. Due to wrist pin placement which moves the ring pack up, the pistons for this stroke have a narrow of crown, which reduces strength. Check out the 383 forged stroker rotating assemblies at Texas Speed.
Thread Starter
Staging Lane
Joined: Oct 2011
Posts: 55
Likes: 0
I would not go more than a 4" stroke on a LS6 block. The 4.1 and 4.125 cranks pull the piston down too far out of the cylinder bore which causes excessive wear. Due to wrist pin placement which moves the ring pack up, the pistons for this stroke have a narrow of crown, which reduces strength. Check out the 383 forged stroker rotating assemblies at Texas Speed.
Can't bore out a LS1 to 4" unless you resleeve it. It's common to hone the bores out to 3.905". As for pistons, Wiseco, Mahle, and Diamond are all good.
As for stroke above 4", I would not necessarily say it's unsafe, just doesn't have the same longevity. The 4.1 and 4.125 strokes tend to start burning oil faster.
As for stroke above 4", I would not necessarily say it's unsafe, just doesn't have the same longevity. The 4.1 and 4.125 strokes tend to start burning oil faster.
There's not that many of us out there but I ran a 3.915 bore with Eagle forged 4.100 crank for 7 years/20k miles without ever touching a thing internally. I recently wiped out a cam bearing and had her tore down. The pistons/block show some wear but rotating assembly still looks brand new. The engine did consume some oil since day 1.
I feel like I'm beating a dead horse with this but my combo made 500rwhp/500rwtq, ran high 10's@129mph and looooow 10's@138mph on a 120shot.
Crank is for sale if you care
I feel like I'm beating a dead horse with this but my combo made 500rwhp/500rwtq, ran high 10's@129mph and looooow 10's@138mph on a 120shot.
Crank is for sale if you care
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Wasn't that the the 395/396 kit that Eagle used to sell? It's actually a kit I've been really interested in myself. Something about saying "It's a 396" just blows my skirt up... Makes me miss my old 65 Chevelle.
Pardon me while I go dig through some of your old posts....
Pardon me while I go dig through some of your old posts....
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Verdad Gallardo With a stroker LS1 you can get 396 with a 3.91" bore and 4.125" stroke. But, you have to clearance the block a lot and still have the issue about the pistons being pulled to far out of the bottom of the bore like I mentioned in an earlier post. For every post I see that saw they used more than a 4" stroke with no problems, I can find another post where there was excesive wear and oil consumption. But hey, it's your motor and your money, do whatever you want.
Yes, there would be more side thrust plus the piston crown is thinner because the wrist pin location pushes the ring pack up. These long strokes are definitely not recommended for boost or nitrous.
It's actually a 393. The Eagle kit uses an LS1 with a 3.905 bore, but not a 4.125 crank though, it was a 4.1
I believe it's the Lunati that uses a 3.903 bore with a 4.125 crank
https://ls1tech.com/forums/dynamomet...acing-cam.html
https://ls1tech.com/forums/dynamomet...yrs-later.html
Some #'s ideas in this thread.
https://ls1tech.com/forums/generatio...5-stroker.html
Since I have a 1168 block, this is probably the route I'm going to go. I can't justify picking up another block when I can put that money toward Mamofying waht I already have.
I believe it's the Lunati that uses a 3.903 bore with a 4.125 crank
https://ls1tech.com/forums/dynamomet...acing-cam.html
https://ls1tech.com/forums/dynamomet...yrs-later.html
Some #'s ideas in this thread.
https://ls1tech.com/forums/generatio...5-stroker.html
Since I have a 1168 block, this is probably the route I'm going to go. I can't justify picking up another block when I can put that money toward Mamofying waht I already have.
Last edited by dr_whigham; Feb 16, 2013 at 06:39 PM.
Thread Starter
Staging Lane
Joined: Oct 2011
Posts: 55
Likes: 0
I'm really stuck on deciding my set up. I'm just sitting on cash and don't really know what set up to get!!!!
I'm really digging the 396 but I wouldn't want to sacrifice too much just for a few more ci's.
Now this car is not my daily but I do plan on doing some hard driving about 2-3 days a week. And I want it as reliable as possible.
Anyone have an estimate on gains with my set up to a few kits. I make 448hp and 383tq this is to the wheels.
I'm really digging the 396 but I wouldn't want to sacrifice too much just for a few more ci's.
Now this car is not my daily but I do plan on doing some hard driving about 2-3 days a week. And I want it as reliable as possible.
Anyone have an estimate on gains with my set up to a few kits. I make 448hp and 383tq this is to the wheels.
Ive been torn with this question as well, my car is now built to hell and I want to go ls2/3...but my mamofied 215s just seem wrong for those blocks and are way too sexy so i think id like to stroke it...and my motto is NOTHING in moderation...please document what you do, been eyeballing that lunati crank. What few results there are on here are pretty damn impressive.
Lme was having a sale on ls2 stuff though...
Lme was having a sale on ls2 stuff though...
I still say the power gains are minimal between a 383 and a 395 motor on top of the oil consumption and piston skirt wear issues already discussed. You also have to do a lot of clearancing. That said, it's your hard earned money, if you want to blow it. Thunder Racing sells 395 rotating assemblies.
Thread Starter
Staging Lane
Joined: Oct 2011
Posts: 55
Likes: 0
I still say the power gains are minimal between a 383 and a 395 motor on top of the oil consumption and piston skirt wear issues already discussed. You also have to do a lot of clearancing. That said, it's your hard earned money, if you want to blow it. Thunder Racing sells 395 rotating assemblies.
Would the 393's have clearance issues also?
Last edited by flipmike22; Feb 22, 2013 at 10:09 PM.
Thread Starter
Staging Lane
Joined: Oct 2011
Posts: 55
Likes: 0