6.0L LQ4 with L92 Heads, LS3 intake, 90mm tb.. 222/234 EPS Custom Cam
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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$. Im really tempted to buy them and stick them in.
This car is going to have stock exhaust and probably a dry kit hidden. Im hoping to make it appear as a stock ls1 as much as possible. Any hints on hiding the 4" tb???
I ordered:
EPS:
LS2 Timing Chain
Custom Camshaft- 222/234 on 115
7.400 Pushrods
SDPC:
-ARP Rod bolts
-Stock GM Headgaskets
-Replacement Oil Pump
-LS7 Lifters
-Valvecover, oil pan, front & rear cover, intake, throttle body, water pump gaskets
-Stock tty head bolts
-Lifter trays
Ebay:
-92mm Throttle Body
-LS3 Intake/rails/injectors
-L92 Stock heads/Rockers
-PAC 1219 Beehive springs
-LQ4 out of a 2005 3/4ton
Reusing:
-Water pump
-Oil Pan
-accessories
Ordering soon:
-EV1toEV6 adapters
-Racetronix pump/hotwire kit
I am dropping the heads off to be milled .030 tomorrow and hope to have all the parts by this weekend. I need to get a tune, so I will probably need to call up Slowhawk.
I am very optimistic about the valve events of this cam along with the slightly larger 6.0 displacement of the lq4 coupled with the l92 heads and ls3 intake.
My last consideration is that I keep seeing ls2 pistons on ebay, NOS for like 300$. 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???
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Last edited by Specialized; 09-09-2011 at 04:55 PM.
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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.
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.
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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!
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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....
![Name: 8111F786-orig.jpg
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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..
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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
Im pretty sure I got the right ones... http://cgi.ebay.com/ebaymotors/_W0QQ...T#ht_500wt_956
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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
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
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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
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
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"
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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...
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...
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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.
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.
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2. Dunno about the 102, the 92mm fits nice though.
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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.