StangKillaLS1

Ok now its time to really get into modding and upping the power. Ive been thinking of just getting a new LS1 block and getting a 383 Stroker package, but Now im thinking real big power gains. Im now really considering the SLP 402 short block with Patriot Stage 2 LS6 heads and my magic stick cam and 150 dry shot of NOS. Ill also be getting the Speed Inc stage 2 4L60E transmission and Moser 12 bolt 3.73 gears and maybe getting a custom Yank or Vig 3800 or 4000 stall... plus lots and lots of suspension upgrades.
What kind of Power could I expect with this setup and what kind of 1/4 times might I see? What do you guys think of the SLP 402 shortblock??? is it a piece of ****?? Will it hold under 150shot or maybe even 200shot?? Id also be considering 42lb injectors and walbro 255 fuel pump. What kind of issues will I have with fitting the block into my engine and is there going to be any custom work to fit parts or anything??
Thanks guys sorry for all the questions just need to see if its worth the time and money.

8banger

iTrader: (16)

The SLP shortblock is fine, just have it balanced/blueprinted by a machinist before you do anything with it. It'll be fine with spray, and the upgraded fuel system stuff is also a good idea. Go with the LS2 aluminum block version, it's lighter weight. However, you should ditch the Patriot heads. With that kind of displacement, and such high quality other components, I would recommend something like TEA heads, not to mention a bigger cam. The block is just a 6.0 block, so there are NO problems fitting it into you car. Good luck. It will kick some ***.

StangKillaLS1

Thanks for your help, you think I need a bigger cam?? I have the Magic stick cam 237/242 113lsa. heh, i thought that was a pretty big streetable cam.
Who has the LS2 402 shortblocks??

8banger

iTrader: (16)

Yeah but a big cam for a 346 will feel a LOT smaller in a 402. That's a pretty big CID difference in terms of a cam. SLP has the LS2 402: http://www.slponline.com/view_product.asp?P=12412

DrkPhx

iTrader: (15)

I assume you mean if he buys the kit only; if you buy the assembled short block this is already done.

8banger

iTrader: (16)

You got it.

JakeFusion

iTrader: (7)

I'd got with an LS2. And SLP has a bit of a bad rep on these forums, though I dunno it seems reasonable... but you could always go with Rapid, LME, Futral, HPE or TSP. They all have LS2 longblocks ready to go, and go with AFR 225s.

With a reasonable cam in the 240-244 range these engines can put down 550rwhp+ easily and be very streetable. Go with 1-7/8" Kooks or QTP Headers and FAST 90 LSX Intake and TPIS 90 Throttle-Body with Walbro 255lph Fuel pump and some 42lbs injectors. Would be awesome. Also, I think a triple disk Vigilante @ 4000rpm with the 3.73s would be perfect.

These forums provide a wealth of info, and I think if you just spend a couple of hours here for about a week you'll know what to buy and what not to buy. You have a good start though, and I'm considering a 402 LS2 with a 244/250 cam.

89FormulaLS2

iTrader: (1)

Check this thread out: https://ls1tech.com/forums/generation-iv-internal-engine/243997-ls2-402-short-block-sdpc.html

I bought my 402 LS2 from SDPC, being built as we speak. Kris Jones was VERY helpful with everything.

StangKillaLS1

Hey thanks guys SOOOO much, thats exactly what ive been looking for... Sorry for more questions but im getting a $15000 loan and Im getting a upgraded tranny which comes out to be $1500 plus a Moser 12 bolt for $2200, and some suspension mods. How much would it cost me roughly for a complete engine with upgraded fuel system?? Jake fusion that set up you told me looks great, what all would I need to add to the LS2 402 short block?? Would all my sesors hook back up?? Now back to how much the complete engine will cost.. which LS2 402 should I go with?? SLP?? SDPC?? Will a iron block sound better then a Aluminum block?? and is the only pro/con of the Iron block weight issue or is there anything else wrong with it??
thanks again for all the help.. just dont wanna jump into this thing blindly

JakeFusion

iTrader: (7)

With the LS2, the knock sensors will have to be retrofitted somehow. SDPC has a workaround for it. With 15k you could go with a new longblock.

I think a good Longblock will cost about 10k-11k (that includes heads [go AFR 225 if you can], cam [244/248 .600"+ on a 114 LSA or similar], pushrods, new rockers and lifters, and oil pump) + 1300 for TPIS 90 TB & FAST 90 Intake, 400 for the injectors and pump, 800 for QTP/Kooks Stainless 1-7/8 headers, 750 for Vigilante Torque Converter and 1500-2500 install and tuning. The LS2 is stronger and lighter than the LS1 was, but not as strong as an iron block. If you are going to spray a 250+ shot, go iron block, otherwise an LS2 will work fine. An iron block will only save you about $500-$600 total, and as far as i can tell, the extra 90lbs or so doesn't affect handling as much as you'd think. Remember, the f-body is already a nose heavy car that is much too bloated anyway. Firmer front springs and a stiffer rear sway bar will counteract the added weight, which is behind the front wheels anyway.

A 15k loan is going to cut it close just with the engine and install and tuning I just stated. If you aren't going to drag race immediately, I'd wait on the Moser, but you can probably trim some of that price down. Wait on the FAST 90 for example. However, don't cut corners and do $hit half-a$$ed, or you will end up paying a lot more in the long run.

But, if you want to go with just an LS2 shortblock, and use the Magic Stick, that should be around 4k. You'll have plenty leftover for everything else, but it's better to get a package designed to work together.

Hope that helps!

texada

iTrader: (3)

you can get a 402 ls2 longblock from scoggin dickey for around $7500. Call Kris

StangKillaLS1

Thanks Jake Fusion again for all your help.. wow you really did your homework. I might up it to a $20K loan, and I plan to be at the track alot once spring and summmer hits. Well now its looks like Ill be going with all that Jake said... oh btw with that cam and all hows my MPG going to be like... will I see really shitty street mpg?? I have a 69 camaro with lots of stuff (454ci,supercharger,N20) and im getting soo crappy mpg that I only use it for the track. Im really looking at making the TA my daily driver yet run low 10s/9s in the 1/4 on the weekend. I dont mind kinda shitty MPG but I dont want it to be soo bad that I end up having to fill my tank up every day.
well like I said before thanks for all the help and once I get the ball rolling on this plan ill get you guys some track times and HP numbers.

Texas_WS6

iTrader: (9)

I just talked to him via e-mail. I think I am going to send him my 6.0L iron block and my Eagle 4" shaft and let him finish the short block. Very good price he quoted me. I will not post the price due to it not being my place. But he did post a price for a LS2 402 short block on here for I think 3999. Not bad. I bet the iron blocked (new block) 402's from them are pretty close to the same. I would strongly sugest to give him a ring.

StangKillaLS1

Yeah, I sent him a PM, but its sunday so he probably wont get back to me till monday, but i cant wait to see how much a long block will run me.

89FormulaLS2

iTrader: (1)

Kris Jones is the man.