chris77

guys i have been doing alot of reasarch but still need help. i need a 402 but dont have alot of $$$$. now i know budget and 402 dont sound to good together but still i know it can be done. so come on guys i need your input. i was looking for a good cheap 402 short block that can handle a 100dry shot. i did want the L92 heads but i already have an ls6 intake and would like to use it. thanks.

SVT THIS

iTrader: (27)

I got an 402 LS2 shortblock, double timing set, all necessary covers, LS7 lifters/guides and bolts, hardened pushrods, Katech sensor harness, ported oil pump, full complete gasket kit including a Cometic head gasket, a set of L92 heads milled to 63ccs w/ upgraded springs to .650 lift, an L76 intake, fuel rails, 40# injectors, 90mm tb and a custom ground cam for my application from SDPC for $7060 shipped to my door. If you plan on installing yourself you are set, I'm having a shop do it for me to save me the headaches. Expect anywhere from $1300-$2300 for an install.

Give Byran at SDPC a call, tell him Mitchell sent you over there. They have the best deals on shortblocks anywhere. 1-800-456-0211. Their website is www.sdparts.com, but you can get a much better idea over the phone.

BTW with an aftermarket shortblock with upgraded connecting rods, forged pistons, etc etc could handle much more than a 100 shot =)

Hennytime

iTrader: (33)

was that all assembled or in short block form and then all the goodies?

SVT THIS

iTrader: (27)

Shortblock was assembled, the other parts were not assembled. The car was already at the shop and I could have them assemble it cheaper than if I had SDPC assemble it.

motorbuilt

iTrader: (17)

I built a 408 last week for cheap.

Found a company on ebay that I just called and ordered direct:
cncmotorsports-$805 shipped Eagle 4.0" Crank
cncmotorsports-$570 shipped Mahle Forged 4.030 pistons /w rings
randomebayuser-$265 shipped new Eagle H-beam 6.125" rods
ls1tech-$300 6.0L ironblock standard bore
machine work/assembly- $750

Good for alot of hp for cheap

chris77

cool..keep em comming guys.

SLED28

iTrader: (7)

We just built a L92 headed (with bowl work) on a LS2 402 short for $7500. I use Compstar crank and rods, and wiseco pistons with a /16 1/16 3/16 ring stack. MUCH better then the metric ring stacks. All you will need to complete the motor is to re use your valve covers, oil pan and pickup and rear cover.

ssdungeon

iTrader: (24)

How much nitrous can that motor hold? Will it take a 250 shot say 12 times a year if tuned correctly?

SLED28

iTrader: (7)

Yes it will take 250 shot no problem.

WKMCD

iTrader: (2)

Now I'm confused. Someone recently said the L92's wouldn't take N02 without blowing head gaskets.

SLED28

iTrader: (7)

I've sprayed 500+ on LS6 heads, the L92 is the same deck thinkness and definitly can take a 250 shot. It would be hard to blow a MLS gasket with ARP studs.

chris77

keep em comming guys but narrow it down to just the short block i have decided to get the heads and everything else i need from the for sell section to keep me in my budget

bud8fan

iTrader: (9)

trt has short block 408 strokers for sale for $3600 on his web site to the right>>>>>>>
built for hi or low compression..your choice....

Katech_Jason

iTrader: (19)

What about a Katech Value 427 for $6950?

JBsZ06

Great thread.

chris77

...please tell me more and if thats the price of a 427 then how much are the 402,ans 408's.

Katech_Jason

iTrader: (19)

427
https://ls1tech.com/forums/generation-iv-internal-engine/548511-katech-value-427-short-blocks.html


We've done 402 versions also for around $5500

chris77

well so far it looks like Mizfit Motorsports,and Texas Speed are in the running they both have short block 408's for 3600 bucks wich sounds damn good. the rest of the stuff i will fine some where. so any one have any opinions on which company i shoud go with.

ssdungeon

iTrader: (24)

fifi fif fi five HUNDRED shot? WTDH What The Dam Hell...LOL

I am trying to hit 9 seconds on spray with a daily driver vette. I know whatever setup you sprayed that on is not a DDriver but that is impressive.

Not to hijack his thread but I am in the market and have 4k now. It seems I should save another 4k then order a long block. I am crossed between the 408 and 402 for driveability as both have been proven to be able to cut 9 seconds in a daily driver vette on a 200 shot. I figurred 250 should make it a little more consistant. I can work the suspension out with no problems and the drivetrain. The 408 weighs more but costs less. Not much less but if the only difference in driveability will be 100 lbs off the nose I dont mind going 408.

2 questions.

1. If I go 408 or 402 is it worth getting the ls2 coil packs?
2. Will it be an easier/cheaper install to upgrade from an LS1 to another aluminum set up? or the same work either way iron 408 or aluminum 402.


I am currently looking L92heads/FASTintake 90/hellfire rings/MLS Head Gasket\ARP studs"thanks sled28" 9 seconds or not I will never spray over a 2 stage 300 shot and I am told this with almost any forged pistons will take 350 all day. I am sure my motor will get at least 480RWHP before the power adder.

I was looking at 4200.00 in the shortblock from SDPC with hellfire rings and forged pistons before this thread.

Keep the prices you guys have found coming. This is a GREAT thread.

1

Wonderbread

iTrader: (51)

Does anyone know if these sponsor built short blocks, such as the ones mentioned from TSP and Miszfit are CNC square decked and align honed? I know these are new blocks, but from what I heard even new blocks can have some major imperfections in deck and main surfaces? I did not see this in any of the descriptions, so curious if they do it or not??

Great thread though!!