Specialized

iTrader: (15)

I am building this motor.. just ordered up a bunch of parts today I want to thank Scoggin Dickey and EPS.

I ordered:

EPS:
LS2 Timing Chain
Custom Camshaft- 222/234 on 115
7.400 Pushrods


SDPC:
-ARP Rod bolts
-Stock GM Headgaskets
-Replacement Oil Pump
-LS7 Lifters
-Valvecover, oil pan, front & rear cover, intake, throttle body, water pump gaskets
-Stock tty head bolts
-Lifter trays


Ebay:
-92mm Throttle Body
-LS3 Intake/rails/injectors
-L92 Stock heads/Rockers
-PAC 1219 Beehive springs
-LQ4 out of a 2005 3/4ton

Reusing:
-Water pump
-Oil Pan
-accessories


Ordering soon:
-EV1toEV6 adapters
-Racetronix pump/hotwire kit



I am dropping the heads off to be milled .030 tomorrow and hope to have all the parts by this weekend. I need to get a tune, so I will probably need to call up Slowhawk.


I am very optimistic about the valve events of this cam along with the slightly larger 6.0 displacement of the lq4 coupled with the l92 heads and ls3 intake.

My last consideration is that I keep seeing ls2 pistons on ebay, NOS for like 300$. Im really tempted to buy them and stick them in.


This car is going to have stock exhaust and probably a dry kit hidden. Im hoping to make it appear as a stock ls1 as much as possible. Any hints on hiding the 4" tb???

HerbCunliffe

iTrader: (4)

nice man GL

litle88

iTrader: (20)

Its all good congrats but I think your pushrod length is going to change since your milling the heads. I think you should measure for a correct p/r length once you get it all together along with PTV clearances.

Just my .02 good luck with your build!

Gonzo98

iTrader: (7)

Depending on the specs of the cam you might have to flycut since your taking .030 off the heads.

briancb1

How big is the cam?
I have LS3 heads milled .030" with a 227/235 @.050" on LSL lobes. I have apprx .045" intake PVT (dangerous) I'm getting a new cam soon but needless to say no need to make mistakes when starting with a clean sheet.

oakley6575

iTrader: (3)

What is this motor going into. And what kind of horsepower are you looking to make at the wheels? Good luck

Specialized

iTrader: (15)

Motor will be going in a 98 Z28, no expectation of power. Just want driveability, stealthyness, and reliability.

04BlackSilverado

iTrader: (6)

Agreed


I would agree as well if he had the LS2/LQ9 Pistons and thin aftermarket Head Gaskets, but with the dished LQ4 Pistons and Stock GM Headgaskets I would kinda doubt it...


He may be fine, but I would suggest like above, and I think you would too, to measure it and be 100% sure.





Specialized, If you are going for a stealth look, cut and splice the Injector connectors so they don't stick out.

Are you getting the Truck coils with the motor? Good upgrade if you are!

DietCoke

iTrader: (18)

You're going to have to major flycut with .030 milled heads, that cam, and the small lq4 bore.

racerfox

iTrader: (4)

what small bore its a 4.0 bore?? thats not small

MattSapp95_T/A

iTrader: (35)

It is a misconception that LQ4 pistons allow more PTV clearance with the LQ4/LS3 setup.... With the large LS3 Intake valve and how tight the radial clearance is the dish doesn't help.... You would need fly cuts/valve reliefs enlarge PTV clearance....

Just so everyone can see what I mean here is a picture of my Iron 6.0 motor at .030 over and even with a effective 16.4cc dish you can see how far out the reliefs go....



granted every setup is different and the OP needs to verify PTV regardless...


I would think he is calling it a "small bore" since he is using LS3 heads on it and the radial clearance is tight compared to the 6.2 bore..

Specialized

iTrader: (15)

I was assured by Thunder that I would have no clearance issues. Will be checking my clearances. Slightly on hold due to hurricane... got all the SDPC parts friday.. but waiting on thunder and the injector adapters.. I got the small ones:

Im pretty sure I got the right ones... http://cgi.ebay.com/ebaymotors/_W0QQ...T#ht_500wt_956

MattSapp95_T/A

iTrader: (35)

If Shane says it won't need fly Cutting then I am sure you will be fine...

You may wanna mic it all though just so you know what you have it doesn't take very long...

Good luck on your build!

Matt

ZTwentyAteU

iTrader: (12)

you can get the stock bellow on a 92mm TB if you slit it in one spot and stretch it on.

scan the car when you put it all together, you prob will have to clock the TPS on the TB to make it read 0% at idle, Ive used a couple ebay 92s and had to do that on them. it reads like 25% or something stupid

cool build

Specialized

iTrader: (15)

I was considering buying a 4" piece of silicone hose, running it into the stock airbox somehow, then laying a stock bellow over it and cable tying it.


I want to sandblast the tb housing so it doesn't look machined. Cast looking would be easier to "no its really a stock tb man"

DietCoke

iTrader: (18)

oven cleaner will corrode the outside and make it look stock :p

LS6

Nice build

I have a couple of questions:

1.have you considered having wire extension for the map sensor for the LS3 Intake Manifold to be fitted?

2.can you install TB 102mm on LS3 intake Manifold after blueprinting the mating side of the intake manifold?

Thanks...

GA95DCMSS

iTrader: (13)

Nice build. Sounds almost like the combo i'm running now vice the cam and valvesprings.
6.0 LQ4
EPS 222/226 .597/.598 112+4 camshaft
LS3 intake Manifold
92mm TB

I'm wondering about the flycutting also, as I'm looking to up the compression on mine too. I'm thinking .030 and a stock head gasket. Only problem is it's my DD and I dont want alot of downtime . Decisions, decisions.

Specialized

iTrader: (15)

1. Haven't gotten that far yet. I'll probably go to the junkyard and hack off the pair of connectors if I can find them and extend it myself.

2. Dunno about the 102, the 92mm fits nice though.

Specialized

iTrader: (15)

Kehl Tech where I had mine flycut measured (with graduated cylinder) the chamber volume after flycutting to 63.5ccs which should put me just past 10.0:1 IIRC.


With ls2 pistons I think I would be at 11:1.

with .040 head gaskets, the compression bump would be roughly .2 pts on each, respectively.