Stroker Options?
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,978
Likes: 280
From: Tulsa OK
Stroker Options?
I'll get the final verdict tomorrow night, but it looks like I'm going to be in the market for a new short block. If so, I've decided to go with a stroker....I haven't decided on a short block and cam, and reuse my existing heads....or if I want to just go with a whole new longblock.
I know I could always go with a LS1/LS6 based 383....for just a little more money, I can do the LS2 based 402. Another option is a 418 L92. I could also go with an LS7 or an Darton sleeved LS1 based 427, but I think those 2 options are more money than I would like to spend.
Can anyone convince me why I should go with L92 418 versus the 402, which is where I'm leaning.
Thanks!
I know I could always go with a LS1/LS6 based 383....for just a little more money, I can do the LS2 based 402. Another option is a 418 L92. I could also go with an LS7 or an Darton sleeved LS1 based 427, but I think those 2 options are more money than I would like to spend.
Can anyone convince me why I should go with L92 418 versus the 402, which is where I'm leaning.
Thanks!
Melting Slicks
Joined: Dec 2004
Posts: 2,847
Likes: 1,144
From: Sleepy Hollow- NJ
I'm in the same boat...an engineless boat that is. I'd love to hear the responses.
The boss gave me a $6000 budget, that was with removal and installation of the old block. It's going to be a close one. I'll probably go over budget but I'm not telling her that...until the car gets put back together.
I'll let you know what I decide to do. Waiting on a few recommendations before I go for it.
The boss gave me a $6000 budget, that was with removal and installation of the old block. It's going to be a close one. I'll probably go over budget but I'm not telling her that...until the car gets put back together.
I'll let you know what I decide to do. Waiting on a few recommendations before I go for it.
Safety Car
Joined: May 2006
Posts: 3,799
Likes: 1
From: Northern Virginia
St. Jude Donor '08
I am no engine expert, but I too have been looking at various engine options including stroker motors.
From everything I have read on this site and LS1 tech, the L92s are not putting down anymore power that the L2 402s. In most cases they seem to be putting down less power. Exactly why, no one seems to know. One theory has it that the L76 intake is too restrictive at high rpm. Also, the L92 seems to be very sensitive to cam selection. The 402 seems to be a proven winner that can put down some serious numbers.
I have found that it is often (almost always) better to go with proven technology than with technology that is still under-going a lot of testing and experimentation to see what works.
From everything I have read on this site and LS1 tech, the L92s are not putting down anymore power that the L2 402s. In most cases they seem to be putting down less power. Exactly why, no one seems to know. One theory has it that the L76 intake is too restrictive at high rpm. Also, the L92 seems to be very sensitive to cam selection. The 402 seems to be a proven winner that can put down some serious numbers.
I have found that it is often (almost always) better to go with proven technology than with technology that is still under-going a lot of testing and experimentation to see what works.
Racer
Joined: Apr 2004
Posts: 391
Likes: 7
From: Garland Texas
I did the LS2 408 and am having great time with it! The l92 are not really doing that well, i think you may be on but no one knows why at this time they are not putting out the Numbers.
The cams slection is much better with the ls2 than the l92. I think the new LS3 intake is going to solve some of the problems in the bigger motor but you will have to wait for them to come out and then wait for them to get around the market. I used the ls2 intake and the 90mm tb and built a set of stage III heads from a set of 317 cast seeing how they are cheap and let me put more money into them with bigger valves and proting and things like that. I did all the work my self so i put all the extra money into the moter and heads. Of course not everyone is crazy enough to do it there self.
So if i was doing it again i would still go with the ls2 knowing what i know now. AND at 553 RWHP i just can not complaine!!
The l92 are not really doing that well, i think you may be on but no one knows why at this time they are not putting out the Numbers. The cams slection is much better with the ls2 than the l92. I think the new LS3 intake is going to solve some of the problems in the bigger motor but you will have to wait for them to come out and then wait for them to get around the market. I used the ls2 intake and the 90mm tb and built a set of stage III heads from a set of 317 cast seeing how they are cheap and let me put more money into them with bigger valves and proting and things like that. I did all the work my self so i put all the extra money into the moter and heads. Of course not everyone is crazy enough to do it there self. So if i was doing it again i would still go with the ls2 knowing what i know now. AND at 553 RWHP i just can not complaine!!
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,978
Likes: 280
From: Tulsa OK
I talked to Jason at TSP this morning. After talking to him (and taking other people's comments into account), I have decided to go with the 402 LS2. He is putting together a couple of quotes on a couple of different options for me today.
For those that are considering their options....I'll let you know what I end up doing.
For those that are considering their options....I'll let you know what I end up doing.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,978
Likes: 280
From: Tulsa OK
Ordered 402 Today!
Okay, I made up my mind an ordered my stroker from TSP today. Here is what I got:
-LS2 402 short block with all the goodies
-Diamond Racing forged pistons with -2cc reliefs
-LS2 conversion kit
-PRC ported L92 heads with dual valve springs, titanium retainers, and upgraded valves
-236/240 .598/.605 114 cam
-TSP modified LS6 oil pump
-L76 intake assembly
-All the hardware, gaskets, seals, etc
They are going to assemble the longblock and then ship to me for my mechanic to install here in Tulsa.
I could have gone a little wilder, but I told Jason I wouldn't this car to have good street manners and run on 91 octane 100% of the time. They built my heads/cam setup just like I wanted, so I'm confident this will turn out how I'm hoping.
After getting everything installed, I'll take the car to TSP to have Jason dyno tune. I'll be sure and post my results.
-LS2 402 short block with all the goodies
-Diamond Racing forged pistons with -2cc reliefs
-LS2 conversion kit
-PRC ported L92 heads with dual valve springs, titanium retainers, and upgraded valves
-236/240 .598/.605 114 cam
-TSP modified LS6 oil pump
-L76 intake assembly
-All the hardware, gaskets, seals, etc
They are going to assemble the longblock and then ship to me for my mechanic to install here in Tulsa.
I could have gone a little wilder, but I told Jason I wouldn't this car to have good street manners and run on 91 octane 100% of the time. They built my heads/cam setup just like I wanted, so I'm confident this will turn out how I'm hoping.
After getting everything installed, I'll take the car to TSP to have Jason dyno tune. I'll be sure and post my results.
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Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
There are a few options to start with
19165485
GM Performance Parts
L92 Engine, 6.2L, 403hp
19156261
GM Performance Parts
LS2 6.0L Gen IV Crate Engine
400-horsepower
Both are about $6,000
Forum Vender Scoggin Dickey has lots of good ideas
http://www.sdparts.com/categories/ls...teEngines.aspx
They can also build you any short block you like.
TSP does very good work too.
Good Luck on the progect.
19165485
GM Performance Parts
L92 Engine, 6.2L, 403hp
19156261
GM Performance Parts
LS2 6.0L Gen IV Crate Engine
400-horsepower
Both are about $6,000
Forum Vender Scoggin Dickey has lots of good ideas
http://www.sdparts.com/categories/ls...teEngines.aspx
They can also build you any short block you like.
TSP does very good work too.
Good Luck on the progect.
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
Um.... you say the 418 has "issues"? The only difference is that it's got a slightly larger bore.
The power is in the heads, cam, and manifold selection... you went w/ L92s and L76 manifold, but the 402... why?
I'd go 418 + ported L92s + LS3 manifold... is the LS3 manifold out yet?
The power is in the heads, cam, and manifold selection... you went w/ L92s and L76 manifold, but the 402... why?
I'd go 418 + ported L92s + LS3 manifold... is the LS3 manifold out yet?
Race Director
Joined: Dec 2004
Posts: 13,760
Likes: 75
From: Haymarket VA
Um.... you say the 418 has "issues"? The only difference is that it's got a slightly larger bore.
The power is in the heads, cam, and manifold selection... you went w/ L92s and L76 manifold, but the 402... why?
I'd go 418 + ported L92s + LS3 manifold... is the LS3 manifold out yet?
The power is in the heads, cam, and manifold selection... you went w/ L92s and L76 manifold, but the 402... why?
I'd go 418 + ported L92s + LS3 manifold... is the LS3 manifold out yet?
I dyno 500/468 on a stingy dyno with cats, 3.90's and heavy wheels. Change those and I'd be 520+. The car drives as well as stock with a baby 234-240 cam and makes 380RWT at 2200rpm with a torque curve like a table top.
Drifting
Joined: Apr 2005
Posts: 1,340
Likes: 3
From: Levittown NY
Okay, I made up my mind an ordered my stroker from TSP today. Here is what I got:
-LS2 402 short block with all the goodies
-Diamond Racing forged pistons with -2cc reliefs
-LS2 conversion kit
-PRC ported L92 heads with dual valve springs, titanium retainers, and upgraded valves
-236/240 .598/.605 114 cam
-TSP modified LS6 oil pump
-L76 intake assembly
-All the hardware, gaskets, seals, etc
They are going to assemble the longblock and then ship to me for my mechanic to install here in Tulsa.
I could have gone a little wilder, but I told Jason I wouldn't this car to have good street manners and run on 91 octane 100% of the time. They built my heads/cam setup just like I wanted, so I'm confident this will turn out how I'm hoping.
After getting everything installed, I'll take the car to TSP to have Jason dyno tune. I'll be sure and post my results.
-LS2 402 short block with all the goodies
-Diamond Racing forged pistons with -2cc reliefs
-LS2 conversion kit
-PRC ported L92 heads with dual valve springs, titanium retainers, and upgraded valves
-236/240 .598/.605 114 cam
-TSP modified LS6 oil pump
-L76 intake assembly
-All the hardware, gaskets, seals, etc
They are going to assemble the longblock and then ship to me for my mechanic to install here in Tulsa.
I could have gone a little wilder, but I told Jason I wouldn't this car to have good street manners and run on 91 octane 100% of the time. They built my heads/cam setup just like I wanted, so I'm confident this will turn out how I'm hoping.
After getting everything installed, I'll take the car to TSP to have Jason dyno tune. I'll be sure and post my results.
Congrats on the purchase!
Heel & Toe
Joined: Aug 2007
Posts: 15
Likes: 0
Just to clarify for some of you folks... the LS3 and L92 car (better known as the L76 intake are the same. Nothing different other than the pretty shell GM puts on top to make em pretty in the vette.
I have a set of L92/LS3 Heads that flow 365+/255cfm I/E ported by Greg Good going on my 408 6.0 Iron block stroker setup.
pics are on the project page at trtturbo.com
kudos.
Mike.
I have a set of L92/LS3 Heads that flow 365+/255cfm I/E ported by Greg Good going on my 408 6.0 Iron block stroker setup.
pics are on the project page at trtturbo.com
kudos.
Mike.
Race Director
Joined: Aug 1999
Posts: 16,935
Likes: 26
From: Lackey, my own dragstrip VA.
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Don't know what your racing use may be but........I hve a 417 iron block. geat tq for moving a heavy safe car and ready for spray as well with the 6.0 truck block
Randy's dad built the short block in 2003 and still doin fine
Randy's dad built the short block in 2003 and still doin fine