Dyekid04

Welp its about time for a built shortblock for my HCI LS2 setup with a YSI. I looked into Tick , TSP , and just looked at some Thompson setups tonight. Curious about the stroker idea or staying stock size. Iron vs alum and who makes the best bang for your buck short block. Any help is much appreciated, THANKS!

C U IN REARVEIW

General consensus is to not use stroker motors with forced induction (maybe with nitrous though) as the piston comes to far out of the cylinder on bottom of the stroke. If your not concerned with weight,than I would definitely go iron block.

SlowBusa08

ERL dry sleeve

Blk 08 C6

Subsribing on this topic.looking to go this route down the road.YSI coming my way on my LS3.

usmcpony

ERL for 1250rwhp and below. LSX for anything about that.

Dyekid04

Checking ERL now... Yea i see a lot of guys running the stroker style but also see ppl saying thats the rod isnt meant for boost bc it drops down so much. It just looks like every damn builder offers 80 versions of 402-408 but like 1 364-376 . On paper the 364-376 blocks are always built to "lower HP" ratings too which is weird. Thompson was saying on the 408 iron 900 hp rating 1100 with full ARP upgrade. Every other builder is saying 650-800 max on the others decent priced 376 style.

Nooch8it

Ppl over do it most of the time spending 10k on a name brand short block. I used a local builder to me and have a 376ci forged ls3 capable of 1000hp if pushed. I have less than 4k $ in the build and it runs like a top.

Steve Haefner

So this is determined primarily by your power goals, Heads, and headers you will use, etc. Do you have a rwhp target?

Enjoy the journey, I am for sure.

Dyekid04

i only have a ECS stage 1 fuel kit if of now, I understand to bump it up it wont take much . Prc Stage 2.5 cnc ported 243's , Vengeance ported FAST 102mm with NW102 ,ID 850's , holley EFI rails and Z06 pump, had a big NA cam but now i think ill go with a BTR stage 3 blower cam or custom grind. Id like to be at 800-850 reliably and have room to up it in the future a litte.

Steve Haefner

First off don't worry about adding a 4" stroke crank, good forged rods, and at your power lvl goals, quality pistons made for boost.

Use a good engine builder that knows LS to do it to work and make decisions on crown size, compression ratio, etc. Many shops have custom diamond pistons or Wisco pistons made for "boost".

So to the block itself, technically you could stay with the LS3 or LS2 / but a 4 inch crank in it, forged rods and pistons, gap for boost and call it a day. The stock blocks can handle this HP range for sure, it's when you way room for the future than make me think LSX / DART SHP / ERL and you will be happy. This will come down to price, what your engine builder uses, and LS parts you can re-use in the build. Enjoy the journey, I am!

Steve Haefner

Oh and some good reading if you are interested.

http://www.lsxmag.com/tech-stories/e...rviving-boost/
http://www.lsenginediy.com/ls-cylind...h-performance/

Dyekid04

Amazing reads right there, thank you! I spoke with vengeance some and they said all they really build are stroker motors for boost. So its looking like a 402-408 is probably where im gonna stay. But through who im not really sure, TMS seems to use K1 rods and crank with diamond pistons . Ive never really heard of K1 myself, not saying anything bad but just never heard. Manley, Lunati, and callies are kinda household names to me.

My budget isnt crazy but 5-6k is kinda what im looking to spend on something to get me into that 800hp bracket While staying reliable.

1MEANGS

K1 8/ weisco I wouldn't be turned off to use them they are a good brand. All the aftermarket forged big names are good metal and forged and will do the job for what your trying to do. Don't over think it bud

Dyekid04

Got ya! Need to start getting up with these builders today i guess and see what they wanna offer! Gotta get thisball rolling ASAP, cant have all this boost not being used.

0Daniel@Vengeance

We are no longer offering shortblocks to ship out, but do refer all customers to Bryan @ LME for these types of combinations. Give him a call and he'll be happy to help you out with what you need.

0Billy@MTI

His last statement rings the most truth. You are trying to way over build for the goals in mind and that is going to eat your budget.

Iron block 408
brand "who ever" 4340 crank
brand "who ever" H beam rods
Brand "who ever" pistons for boost
Custom cam (why throw in a cam that everyone and brother has when you can have a custom cam ground for you and only you at the same price.
ARP everything!
Stock GM timing components
Melling oil pump with low pressure spring
Clevite H series bearings

I just did all of this with a top end not near as good as yours with 16psi and made 904whp

0Billy@MTI

Here I just built this for you in about 5 min. Add a cam and a few other bits and you will be around $5200 shipped

Dyekid04

Easy enough! Iron it is , some of the guys were kinda moving me towards aluminum for weight . but for strength i think its a no brainer honestly. I need to look into LME now!


QUOTE=Lance@MTI;1593293334]His last statement rings the most truth. You are trying to way over build for the goals in mind and that is going to eat your budget.

Iron block 408
brand "who ever" 4340 crank
brand "who ever" H beam rods
Brand "who ever" pistons for boost
Custom cam (why throw in a cam that everyone and brother has when you can have a custom cam ground for you and only you at the same price.
ARP everything!
Stock GM timing components
Melling oil pump with low pressure spring
Clevite H series bearings

I just did all of this with a top end not near as good as yours with 16psi and made 904whp[/QUOTE]

0Billy@MTI

You can't go wrong with LME, they will build you a rock solid short block. We use them all the time with great results.

Dyekid04

awesome thank you ! I built one on there last night kinda messing around and need to call up there to see what dish i should go with for my heads , pump gas and meth