[rangerrob]

Fellas,

With about 2 weeks left finally, i'm looking into my options when I get back. I am heavily leaning towards a stroker, anywhere between 383-414ci. There's no replacement for displacement right? There is a guy here who I "talk cars with" a lot and told me it would not be a wise decision to convert my ls6 with a stroker kit / bore out the block because the aluminum block of the ls6 isn't best suited for a stroker set up. He said it can be done, and shouldn't cost too much, but is this a correct statement? If not, should I just go with an eagle or lunati stroker kit? I haven't found any others out there. I honestly have no clue.

Or if that is a correct statement, what should I be looking for in a small block, used, or new, and from where? should i be looking at an ls3?

I am pretty set on a stroker as I love the way they sound at idle with a nice cam. I have read that a 383 would eb better than a larger setup, i.e. 414 for FI down the road? Also, I'm no guru with internals either, so I wouldn't have the slightest idea as what to get, i.e. cam and specs, heads (afr/trickflow/gmpp), and anything else other than stuff that is forged.

I'm also not sure which company's make the best products for this type of setup. And if W4M ever gets us more info on the tvs systems, i'd probably slap that puppy on too! I'm probably going to try and call EPP and see what they say about it and see what they might be able to do.

When it's all said and done, I want to comfortably put 500hp to the pavement. Is that feasible? what kind of ballpark figures am i looking at to do such a conversion? i'm trying not to spend more than 6-7k if need be, the cheaper the better of course, but i won't sacrifice quality and reliability just to save a few bucks. I know ctsv154 has this type of setup w a maggie and it looks pretty impressive. Anyways, any helpful info is greatly appreciated.

Rob

 

[justin311]

DO IT!!!! Did that maggie deal fall through?

 

[lollygagger8]

Ya call Bob @ EPP....260-244-4808 (I should have them on speed dial) lol

 

[CTSV_510]

Getting 500 rwhp out of a N/A setup is going to mean you'll probably have to make some choices that will not be FI friendly if you plan on going that way down the road. You need to decide now whether or not you will be getting a blower.

If you don't think you'll ever really end up supercharging it, then got with the biggest cubes you can, high compression, and a big lopey cam.

If you do think you will be supercharging it, you won't need to go as big on the cubes. What you could do is pick a blower cam that will still make good power N/A (alot of them will) and a nice set of heads and pistons that will give you a good 11:1 or so compression ratio. When you decide to get a blower, your cam will be ready to go, you'll just have to swap the heads for some truck heads, 317 castings or something that will lower the compression to a place more suited to forced induction.

The best idea is to have a conversation with Bob at EPP.

 

[nmaier2201]

I also think Scroggins Dickey has a tech line that you can shoot ideas across. They can even put the whole motor together for you... for a price of course.

One of the baddest Vs here has a 402 LS2 aluminum sleeved LS2 block so where your buddy has a point at massive massive HP levels, you don't "have" to have a cast iron block.... not for 500hp at the wheels anyways.

Of course if you really wanted to anyways you could get a LSx or a LQ9 block to accomplish those needs.

I do agree with everything CTSV510 says as well.. get a 10:1 or 11:1 compression ratio with 243 heads right away, and then make sure you can throw some L92 heads on it down the road to drop you to a 9:1 or 8.5:1 later when you get some FI..... that's a good plan... it was my plan.

You'll need a 4" or larger bore to use those L92 heads so plan accordingly ahead of time... save you lots O cash

 

[thebigjimsho]

Keep the stocker and go all new block if going NA. No use tearing up a perfectly good, rare non-truck motor...

 

[liqidvenom]

call me a cube whore but i'm a fan of a 427 build. but start with a ls2 block and save the ls6 for something else

 

[CTSV_510]

call me a cube whore but i'm a fan of a 427 build. but start with a ls2 block and save the ls6 for something else

you cube whore.

 

[rand49er]

The guys above know more than I do ... I'll be the first to admit it.

BUT, I'm within striking distance of that magic "500 rwhp" number, and I'm going to get very close to it in a couple of months going from a 78 mm TB to a 90 mm. The thing is, I can reverse most of my bolt-ons and get back close to stock. Somehow, I see that as an advantage.

If you'd be satisfied with 500 and it's as far as you want to go, then "my way" might an option to you. However, if you want to get to 500 NA, then go FI and go way beyond that, then you're gonna need to shelve that LS6 and go with something else. Stkshkr (Gene) is over 500, I believe, with his stroker 383.

Whatever you do, Rob, it's going to be a whole bunch of fun! Enjoy every minute of it. :yup:

 

[trukk]

A 383 from an LS6 is no problem at all. All you have to do is stroke it. If you want more you will need to bore it as well, which means something like a sleeve(darton), because you can;t bore the aluminum blocks (aside from an agressive hone).

I'm with the other guys here. I'd pull the LS6, and sell it, and then get a stroked LS3 (which would put you comfortably over 400 ci, without doing any boring, or getting to agressive with the stroke.)

Also like was already said, decide now on the FI, as it will make a big difference on the CAM, heads and compression choices you will make now.

Good luck on your choice, and keep you ass low for next few days :salute:

-Chris

 

[rangerrob]

thanks for the input guys! i am leaning towards pulling the ls6 and possibly selling it to offset some of the cost. I will be calling Bob @ EPP once I get back to set something up. I'll keep you posted

 

[Twitch]

Love your posts Rob. Always eager to spend money.
You didn't mention if 500 was you goal, or just what you want before you get a blower. Cam and supercharger should get you about 500 to the wheels.
Heck, with those generous midwest dynos you'll get 550 easy

 

[liqidvenom]

you cube whore.

:bouncy:

but look at this build.

http://www.maxchevy.com/tech/2007/ii_7-lsx-1.html

454ci LSX Dyno Test
RPM Corrected Torq (lb-ft) Corrected Power (hp)
6091 649.5 753.4
6200 657.1 775.7
6300 662.1 794.3
6410 658.0 803.1
6590 669.4 839.9
6700 665.5 849.0
6800 666.7 863.3
6900 659.5 866.5
7000 664.7 885.8
7100 652.9 882.6
7200 648.3 888.8
7300 642.9 893.6
7400 635.8 895.9
7500 630.8 900.8
7600 625.0 904.4
7700 612.7 898.2
7800 615.0 913.5
7900 604.7 909.5
8000 599.1 912.6
8100 593.5 915.3
8200 585.1 913.5
8300 585.2 924.9
8400 581.2 929.5
8500 573.9 928.8
8600 566.7 928.0
8700 557.5 923.6
8761 545.9 910.6



i just want to have that in my car..... ( you might want to stock up on getrag stock though)

 

[The Tony Show]

Bowtie block. Go big or go home.

 

[nmaier2201]

I need to do some research on what the limiting factors are for RPMs. I mean what did they do to that 454 to make it able to rev that high... I thought it was a velocity issue with the pushrod motor along with the length of stroke... but then you see charts like that... and they overcame the RPM limit somehow.... I would really like to figure that out.

 

[ctsv154]

You can also build a 427 with the LS3 block with stock bore. You just need a 4.125" stroke crank.

 

[rangerrob]

is a 427 the most feasible ci if i wanted to go FI later on?

 

[Kmajecki]

What (if anything) needs to be kept in mind to ensure it bolts right up to the tranny? Will any LS motor bolt right up? (LS2, LS6, LS3)

 

[liqidvenom]

I need to do some research on what the limiting factors are for RPMs. I mean what did they do to that 454 to make it able to rev that high... I thought it was a velocity issue with the pushrod motor along with the length of stroke... but then you see charts like that... and they overcame the RPM limit somehow.... I would really like to figure that out.

same here.... maybe they tried some nascar type of tricks to get it to go that high

 

[CTS-Voodoo]

Heh, sounds like an LQ9 block and a set of L92 heads are in order.. Yay cheap performance!