The "official" LS1/LSx/5.3/6.0 tech thread

there is a guy in Granite falls that just build over a 900 cubic inch lsx.....nasty
 
Ok, finally think that I can roll the 6.0 out of the corner and get this sucker ready for the swap. Just a few things that I forgot and cant find WTF that I wrote them down. Heres what I ran into today.
VSS- what pulse do I need? I have a VSS for my TBI setup that runs off the speedo. I assume that I cant use it. What is the best option for this? Internal 700r? -or drill/tap into the Novak adatper (700R/300) and screw in a reluctor?
Brake switch- is there a good aftermarket one for low $ or do I just hit the JY?
Is it required that I have any length of air pipe (tuning reasons perhaps?) prior to the intake or can I just mount a filter just prior to the intake?
What (if any) troubles will I have with the aftermarket tach? I have heard mixed results and am curious as to what I will run into.
Will add more ? as I remember what questions I had 8 months ago when I thought I was swapping this thing in the first time.
 
SSR motor

I saw a rat-rod (50's something chevy pickup) with an SSR motor yesterday, :eek:
He had set the body on an S10 frame and it was a perfect fit
 
I know most people use autos for this but what are the manual transmission options? I assume there are 4x4 transmissions that could have doublers behind them?
 
Indy Will said:
I flipped my intake 180 last night on my LS1...it appears that the only sensor that will have to be moved is what seems to be an oil pressure sending unit. If I could locate a right angled 16m tube adapter I think it would take care of the problem.
Valve covers swap from one side to the other so vent and fuel line pluming is stock...
EDIT: So I've read some more... the ECU doesn't use this oil pressure sending unit...this is just for the gauges...so...I don't need it...
Instead of finding a 16M tube pluge (the kind with the O-ring/bushing seal) I'm gonna break off the plastic piece of the sensor and weld it up...
Oil pressure guage will get plumbed into the cast piece right above the oil filter with a drill and 1/8NPT tap...
This should be it as far as a stock intake flip.
Click to expand...
there is a plug on the driver side front of the block just under the alternator bracket that a sending unit can be relocated to. the plug taken out works in the hole at the top of the block.

Kustom Fabrikated said:
I work at a chevy dealer and there have been tahoes and silverados coming in with usually either low oil pressure or a noise at half engine speed. The first one that got torn down had spun the third cam bearing back and i believe the second motor we tore down was also that same cam bearing. Last thursday I got a silverado 113,000miles real bad chirping at half engine speed removed belts and found it coming from the center of the block customer chose to replace motor instead of tearing it down. Just today one came in that had low oil pressure and the noise I am not sure what happened with that yet but I think they ended up finding another problem with the cam.
The worst part is that they all seemed to be fairly well maintained and varied from construction company use to soccer moms. Now this could just be a certain batch of motors because iirc they seemed to all be around 03' but the milages have varied from around 70k-130k
hope that helps if we end up tearing down another one soon i will try to take pictures of the failed areas
Click to expand...
i would be curious to know how many had been run low in oil at some point or another. due to poor pcv system designs, they tend to burn more than most engines. the earlier ones were worse than later models. there were some changes made around 2000 or so i believe, but even those still consume more than "normal". i know when i worked at a gm dealer it was very common to get vehicles in that would have consumed 1-2 quarts between regular intervals of 3-5k miles.

that said, the pumps in most applications aren't that great and it's not terribly uncommon to have them drop pressure or completely fail around ~100k miles or so. sooner if you're using an engine hard. i would recommend anyone put a ported ls6 pump in even if you're not freshening anything else up. it's fairly cheap insurance.
 
LS-1 Engine angle?

Anybody know what angle front to back the engine is suppose to be? Got TH-350 pan flat and the engine seems to have alot of up angle. I assume the oil pickup is at the back of the pan on a LS-1 ?
 
To help in modifying the harness, I copied this from Pirate...

These are the RED & BLUE PCM connector pinouts for specifically 1999 5.3L,
however, you will find that 1999 to 2002 are VERY similar.*
Remove all bold highlited items for use with automatic old scool auto tranny.
Truck 1999 5.3L Connector C1 BLUE
Pin Wire Color Circuit No. Function
Blue 1 BLK/WHT 451 PCM Ground
Blue 2 LT GRN 1867 Crankshaft Position Sensor B+ Supply
Blue 3 PNK/BLK 1746 Injector 3 Control
Blue 4 LT GRN/BLK 1745 Injector 2 Control
Blue 5 -- -- Not Used
Blue 6 -- -- Not Used
Blue 7 -- -- Not Used
Blue 8 -- -- Not Used
Blue 9 -- -- Not Used
Blue 10 -- -- Not Used
Blue 11 LT BLU 1876 Knock Sensor Signal Rear
Blue 12 DK BLU/WHT 1869 Crankshaft Position Sensor Signal
Blue 13 -- -- Not Used
Blue 14 -- -- Not Used
Blue 15 -- -- Not Used
Blue 16 -- -- Not Used
Blue 17 DK BLU 1225 Transmission Fluid Pressure Switch B Remove
Blue 18 RED 1226 Transmission Fluid Pressure Switch C Remove
Blue 19 PNK 439 PCM Ignition Supply (KEY ON) INPUT
Blue 20 ORN 440 PCM Battery Supply Supply 12 volts constant INPUT
Blue 21 YEL/BLK 1868 Crankshaft Position Sensor Ground
Blue 22 -- -- Not Used
Blue 23 PPL 719 Sensor Ground EGR Remove
Blue 24 -- -- Not Used
Blue 25 TAN 1671 HO2S Signal Low Bank 2 Sensor 2 Remove
Blue 26 TAN 1667 HO2S Signal Low Bank 2 Sensor 1
Blue 27 -- -- Not Used
Blue 28 TAN/WHT 1669 HO2S Signal Low Bank 1 Sensor 2 Remove
Blue 29 TAN/WHT 1653 HO2S Signal Low Bank 1 Sensor 1
Blue 30 LT GRN 1478 Engine Coolant Level Switch Remove
Blue 31 -- -- Not Used
Blue 32 BLK/WHT 771 PRND A Input Remove
Blue 33 PPL 420 TCC Brake Switch Remove
Blue 34 WHT 776 PRND P Input Remove
Blue 35 GRA 48 Clutch Switch Signal Remove
Blue 36 BLK 1744 Injector 1 Control
Blue 37 YEL/BLK 846 Injector 6 Control
Blue 38 -- -- Not Used
Blue 39 -- -- Not Used
Blue 40 BLK/WHT 451 PCM Ground
Blue 41 BLK 407 Sensor Ground Remove
Blue 42 -- -- FAN OUTPUT (gound output to fan relay) OUTPUT
Blue 43 RED/BLK 877 Injector 7 Control
Blue 44 LT BLU/BLK 844 Injector 4 Control
Blue 45 GRA 474 Fuel Tank Pressure Sensor 5V Reference Remove
Blue 46 GRA 416 TP Sensor 5V Reference
Blue 47 GRA 597 MAP Sensor 5V Reference
Blue 48 GRA 596 EGR Pintle Position Sensor 5V Reference Remove
Blue 49 -- -- Not Used
Blue 50 -- -- Not Used
Blue 51 DK BLU 496 Knock Sensor Signal Front
Blue 52 -- -- Not Used
Blue 53 BLK 470 Fuel Tank Pressure Sensor Ground Remove
Blue 54 BLK 452 TP Sensor Ground
Blue 55 BRN 1456 EGR Pintle Position Sensor Signal Remove
Blue 56 -- -- Not Used
Blue 57 ORN 440 PCM Battery Supply Supply 12 volts constant INPUT
Blue 58 DK GRN 1049 Serial Data to OBD2 Port to pin 2 in OBD II PORT OUTPUT
Blue 59 YEL 710 Serial Data to BCM Remove
Blue 60 ORN/BLK 469 MAP Sensor Ground
Blue 61 PNK/BLK 632 CMP Sensor Ground
Blue 62 -- -- Not Used
Blue 63 GRA 720 Engine Coolant Temperature (ECT) Sensor Ground
Blue 64 -- -- Not Used
Blue 65 PPL 1670 HO2S Signal High Bank 2 Sensor 2 Remove
Blue 66 PPL 1666 HO2S Signal High Bank 2 Sensor 1
Blue 67 -- -- Not Used
Blue 68 PPL/WHT 1668 HO2S Signal High Bank 1 Sensor 2 Remove
Blue 69 PPL/WHT 1665 HO2S Signal High Bank 1 Sensor 1
Blue 70 BRN 1174 Low Oil Level Switch Remove
Blue 71 -- -- Not Used
Blue 72 YEL 772 PRND B Input Remove
Blue 73 BRN/WHT 633 Camshaft Position (CMP) Sensor Signal
Blue 74 YEL 410 Engine Coolant Temperature (ECT) Sensor Signal
Blue 75 PNK 1020 PCM Ignition Supply (KEY ON) INPUT
Blue 76 BLK/WHT 845 Injector 5 Control
Blue 77 DK BLU/WHT 878 Injector 8 Control
Blue 78 -- -- Not Used
Blue 79 WHT 687 3-2 Shift Solenoid Control Remove
Blue 80 ORN/BLK 510 Fuel Level Sensor Ground Remove
Truck 1999 5.3L Connector C2 RED
Pin Wire Color Circuit No. Function
Red 1 BLK/WHT 451 PCM Ground
Red 2 BRN 418 TCC Control Solenoid
Red 3 -- -- Not Used
Red 4 -- -- Not Used
Red 5 -- -- Not Used
Red 6 RED/BLK 1228 Transmission Fluid Pressure Control Solenoid High Remove
Red 7 RED 1676 EGR Solenoid Supply Remove
Red 8 LT BLU/WHT 1229 Transmission Fluid Pressure Control Solenoid Low Remove
Red 9 DK GRN/WHT 465 Fuel Pump Relay Control (12 volt output to relay) OUTPUT
Red 10 WHT 121 Engine Speed (Tach) Output Signal OUTPUT
Red 11 DK BLU 604 Secondary A/C High Pressure Switch Remove
Red 12 -- -- Not Used
Red 13 LT BLU/BLK 396 Cruise Control Engage Signal Remove
Red 14 -- -- Not Used
Red 15 BRN 25 Generator L Terminal
Red 16 GRA/BLK 1694 4 Wheel Drive Switch Signal Low Remove
Red 17 DK GRN/WHT 762 A/C Request Signal Remove
Red 18 -- -- Not Used
Red 19 BLK/WHT 1695 4 Wheel Drive Front Axle Switch Remove
Red 20 LT GRN/BLK 822 Vehicle Speed Sensor (VSS) Reference Low Remove
Red 21 PPL/WHT 821 Vehicle Speed Sensor (VSS) Signal Remove
Red 22 RED/BLK 1230 Vehicle Speed Sensor (VSS) Signal (6.0L Only) Remove
Red 23 DK BLU/WHT 1231 Vehicle Speed Sensor (VSS) Reference Low (6.0L Only) Remove
Red 24 DK BLU 417 TP Sensor Signal
Red 25 TAN 472 IAT Sensor Signal
Red 26 PPL 2121 Ignition Control 1
Red 27 RED 2127 Ignition Control 7
Red 28 LT BLU/WHT 2126 Ignition Control 6
Red 29 DK GRN/WHT 2124 Ignition Control 4
Red 30 -- -- Not Used
Red 31 YEL 492 MAF Sensor Signal
Red 32 LT GRN 432 MAP Sensor Signal
Red 33 DK GRN 1614 HVAC Recirculation Door Control (KEEP PIN HERE FOR FAN 2 CONTROL) Remove
Red 34 DK GRN/WHT 428 EVAP Canister Purge Solenoid Control Remove
Red 35 -- -- Not Used
Red 36 BRN 436 AIR Pump Relay Control (w/NC1) Remove
Red 37 -- -- Not Used
Red 38 -- -- Not Used
Red 39 RED 631 CMP Sensor B+ Supply
Red 40 BLK/WHT 451 PCM Ground
Red 41 WHT 257 EGR Solenoid Ground Remove
Red 42 TAN/BLK 422 TCC Enable Circuit (4L60-E only) Remove
Red 43 DK GRN/WHT 459 A/C Clutch Relay Control Remove
Red 44 -- -- Not Used
Red 45 WHT 1310 EVAP Canister Vent Valve Control Remove
Red 46 BRN/WHT 419 Malfunction Indicator Lamp (MIL) Control (Ground output) OUTPUT
Red 47 YEL/BLK 1223 Transmission Shift Solenoid B Remove
Red 48 LT GRN 1222 Transmission Shift Solenoid A Remove
Red 49 YEL/BLK 1827 Vehicle Speed Output Circuit 128K Remove
Red 50 DK GRN/WHT 817 Vehicle Speed Output Circuit 4K Remove
Red 51 YEL/BLK 1227 Transmission Temperature Sensor Signal Remove
Red 52 -- -- Not Used
Red 53 -- -- Not Used
Red 54 PPL 1589 Fuel Level Sensor Signal Remove
Red 55 DK GRN 603 A/C Compressor Cycling Switch Signal Remove
Red 56 -- -- Not Used
Red 57 BLK 552 IAT Sensor Ground
Red 58 -- -- Not Used
Red 59 -- -- Not Used
Red 60 BRN 2129 Ignition Control Reference Low Bank 1
Red 61 BRN/WHT 2130 Ignition Control Reference Low Bank 2
Red 62 GRA 773 PRND C Remove
Red 63 PNK 1224 Transmission Fluid Pressure Switch A Remove
Red 64 DK GRN 890 Fuel Tank Pressure Sensor Signal Remove
Red 65 -- -- Not Used
Red 66 PPL/WHT 2128 Ignition Control 8
Red 67 RED/WHT 2122 Ignition Control 2
Red 68 DK GRN 2125 Ignition Control 5
Red 69 LT BLU 2123 Ignition Control 3
Red 70 -- -- Not Used
Red 71 -- -- Not Used
Red 72 -- -- Not Used
Red 73 -- -- Not Used
Red 74 -- -- Not Used
Red 75 -- -- Not Used
Red 76 LT GRN/WHT 1749 IAC Coil B High
Red 77 LT GRN/BLK 444 IAC Coil B Low
Red 78 LT BLU/BLK 1748 IAC Coil A Low
Red 79 LT BLU/WHT 1747 IAC Coil A High
Red 80 -- -- Not Used
 
Continued...




C2 - Underhood Fuseblock 2000
Pin Wire Color Circuit No. Function
A1 -- -- Not Used
A2
A3 DK BLU 604 Air Conditioning Refrigerant High Pressure Cut-Out Switch
A4 -- -- Not Used
A5
A6
A7 GRY 120 Fuel Pump Motor Feed (Diesel)
A8 -- -- Not Used
A9 LT GRN 24 Back-Up Lamp Feed
A10 -- -- Not Used
A11
A12
B1
B2
B3 DK GRN 59 Air Conditioning Compressor Clutch Solenoid Feed
B4 -- -- Not Used
B5 LT BLU 203 Air Conditioning refrigerant High Pressure Cut-Out Switch
B6 PNK 239 Fused Ignition Positive Voltage - EVAP Emissions Canister Purge Valve Cut and label
B7 DK GRN/WHT 465 Fuel Pump Relay Feed - PCM provides 12v+ to turn on FP Relay Cut and label
B8 ORN 440 Fused BATTERY Feed - PCM Cut and label
B9 PNK 1339 Fused Ignition Positive Voltage (ETC) - Electric Throttle Control
B10 -- -- Not Used
B11
B12
C1
C2
C3
C4 PNK 239 Fused Ignition Positive Voltage - Mass Airflow Sensor Cut and label
C5 -- -- Not Used
C6
C7
C8
C9
C10 PNK 1039 Fused Ignition Positive Voltage - Injectors 1,3 Cut and label
C11 PNK 439 Fused Ignition Positive Voltage - PCM Cut and label
C12 PNK 1239 Fused Ignition Positive Voltage - Injectors 2,4 Cut and label
D1 BLK/WHT 1695 Four Wheel Drive Front Wheel Lock Telltale Feed
D2 -- -- Not Used
D3 DK GRN/WHT 459 Air Conditioning Compressor Control Relay Output - Coil
D4 -- -- Not Used
D5
D6
D7
D8 PNK 539 Fused Ignition Positive Voltage - Heated Oxygen Sensors, (Both Front Sensors) Cut and label
D9 PNK 639 Fused Ignition Positive Voltage
D10 PNK 1039 Fused Ignition Positive Voltage - Injectors 5,7 Cut and label
D11 PPL 6 Starter Solenoid Feed
D12 BLK 550 Ground
E1 BLK/WHT 1695 Four Wheel Drive Front Wheel Lock Telltale Feed
E2 PNK 1020 Fused OFF/RUN/CRANK Feed - C100 Pin C
E3 LT GRN 275 Transmission Mounted Neutral Safety Switch Output - PARK
E4 -- -- Not Used
E5
E6 PNK 1239 Fused Ignition Positive Voltage - Coils 2,4,6,8 Cut and label
E7 PNK 1239 Fused Ignition Positive Voltage - Injectors 6,8 Cut and label
E8 PNK 1539 Fused Ignition Positive Voltage - Heated Oxygen Sensors, (Both Rear Sensors) Cut and label
E9 -- -- Not Used
E10
E11
E12 PNK 1039 Fused Ignition Positive Voltage - Coils 1,3,5,7 Cut and label
F1 -- -- Not Used
F2 PNK 1020 Fused Ignition Feed - PCM, Transmission Solenoids
F3 LT GRN/BLK 584 Fused Automatic Shift Lock Solenoid Feed
F4 -- -- Not Used
F5
F6 BLK/WHT 451 Engine Control Module Ground
F7 BLK 550 Ground
F8 -- -- Not Used
F9 PNK 839 Fused Ignition Positive Voltage
F10 PPL/WHT 1035 Starter Relay Feed - Coil
F11 YEL 1737 Transmission Mounted Neutral Safety Switch Output - Park/Neutral (Auto)
F11 PPL/WHT 1035 Starter Relay Feed - Coil (Manual)
F12 -- -- Not Used
C100 - Inline Harness Connector End View
Pin Wire Color Circuit No. Function
A DK BLU 84 Cruise Control Set/Coast Switch Signal (ETM)
A LT*BLU/BLK 396 Cruise Control Signal - Engaged (Gas)
B GRY 48 Clutch Switch Signal - Clutch Anticipate (Gas)
B WHT 1294 Electronic Variable Orifice (EVO) Solenoid Feed
C PNK 1020 wire for PCM/Transmission 12v+ RUN/CRANK Cut and label
D DK GRN/WHT 817 Vehicle Speed Signal
E PPL 420 Brake Pedal Switch Output - Torque Converter Clutch Cut and label
F PNK/WHT 1001 Real Time Damping (RTD) Lift/Dive Signal
G BRN/WHT 419 Check Engine Indicator Lamp Output
H DK GRN 1049 Serial Data Signal (Class 2)
J TAN/WHT 331 Oil Pressure Sensor Signal
K WHT 121 Tachometer Signal
L GRY 397 Cruise Control On Switch - Output (ETM)
L BRN 1295 Electronic Variable Orifice (EVO) Solenoid Output
M YEL 710 Serial Data Signal*(Class 2)
N BRN 241 Fused Ignition Positive Voltage
P DK GRN 1614 Air Inlet Valve Motor Feed
R LT* GRN/BLK 584 Fused Automatic Transmission Shift Lock Control Feed
S GRY/BLK 87 Cruise Control Resume/Accelerate Switch Signal (ETM)
C152 - Inline Harness Connector End View
Pin Wire Color Circuit No. Function
A BLK/WHT 1695 Four Wheel Drive Front Wheel Lock Telltale Feed
B -- -- Not Used
C GRY 474 Reference Voltage Feed - 5 Volt
D DK GRN 890 Fuel Tank Pressure Sensor Signal
E YEL/BLK 1827 Vehicle Speed Signal (VSS)
F WHT 1310 Canister Vent Valve Solenoid Output
G ORN/BLK 510 Sensor Return (Fuel Level)
H -- -- Not Used
J BLK 470 Sensor Return
K PPL 1589 Fuel Gauge Sensor Signal
L -- -- Not Used
M -- -- Not Used
C153 - Inline Harness Connector End View
Pin Wire Color Circuit No. Function
A GRY/BLK 1694 S4WD Switch Signal - Low
B BLK/WHT 1695 S4WD Front Axle Lock TT (Except ATC )
C BRN 241 Fused Ignition Feed (S4WD)
 
What clutch are any of you running if anyone has a manual behind their LS? I am putting a 5.3 in front of a NV4500 (once I get it rebuilt) and am not sure what a good choice would be. Thanks. -Brandon
 
BShore said:
What clutch are any of you running if anyone has a manual behind their LS? I am putting a 5.3 in front of a NV4500 (once I get it rebuilt) and am not sure what a good choice would be. Thanks. -Brandon
Click to expand...

If you MUST use a manual, a regular truck clutch should likely be just fine. low range takes a lot of the stress of it, as does the lighter weight of our rigs.

My favorite clutch is a torque converter. :bounce2:
 
DanStew said:
What about the 8.1L????? :) I know you looked into it Rich.
Click to expand...
any info collected on where to get a stock harness if you didnt get it with the engine?

Aftermarket harness options? prices that arent throught the roof?

just thouhgt it would be good info to add to the page if you have it.
___________________
 
Rich said:
If you MUST use a manual, a regular truck clutch should likely be just fine. low range takes a lot of the stress of it, as does the lighter weight of our rigs.

My favorite clutch is a torque converter. :bounce2:
Click to expand...


If I were building a dedicated KOH car it would def. be an LS motor hooked to a nv4500. For trail riding, not so much.
 
BIGWOODY said:
If I were building a dedicated KOH car it would def. be an LS motor hooked to a nv4500. For trail riding, not so much.
Click to expand...
I like the idea of a manual in a go fast rig. Do many of the KOH cars run manuals?
 
I guess I'm old school and still prefer a manual in my trail vehicle. For mud bogs or go-fast stuff a auto is better. For go fast the auto prevents breakage, the torque converter provides some cushion in the driveline.
 
My 5.3 is running now, with the ECM thinned and flashed from Jim's Performance. It is running very rich though, to the point where it smells of gas, pumps black smoke out the tailpipe constantly, and sputters badly on any throttle input. I changed the plugs and wires and the problem remains. Any suggestions?
 
rockcity said:
o2 sensors? Without those it will run rich. I just talked to him yesterday about this very same thing...
Click to expand...
Yup. they apparently cut off the wrong o2 sensors at Jim's Performance when they thinned out my harness, (pre cat instead of post cat). I was wondering about it when I put it together why the o2 sensor connectors wouldn't plug up. I originally had a set of pre cat sensors, and replaced them with post cat sensors. They plugged right up to the harness, but the computer is not happy with it like that. It runs, but waaaaay rich. I guess I have to call Jim on Monday.
EDIT: Jim's DID NOT make a mistake, I had the wrong o2 sensors plugged in. They were from the wrong year engine. Swapped them out and it runs like a champ! I love this 5.3.
 
Put this in general tech but didnt get any help so i'll try here. Need help finding a throttle cable. I have a 6.0 with a LS1 intake and throttle body (cable operated) in a 88 yj. Which throttle cable works best? I bought a cable for a 98 camaro (non traction control) but its too long.
Thanks for any help
Butch
 
ok, so I had Jims flash me 2 computers so I could have a trail spare. Both were setup for max HP. Wondering now what mileage I could get if I had the spare flashed for max mileage? blasphemy I know, but I would like to get better than 10mpg if possible then when I need to raise hell, then switch them out. Just mount both and switch between them. easy and a 5 minute deal.
 
Just found another thread where guys are running NP 465s. Thats what Ill use. Just need a thicker flywheel I read to make up for the different crank etc.
 
I'm rockin a mild 6.0 with my stock NV3500 in a 99 Silverado. We'll see how it likes it. I've read of several people running them trouble free.

For no more mods than I have, this 6.0 is a real torque monster :D

LQ4 rotating assembly/block
243 heads
stock MLS gaskets
214/218
.601/.591
108 LSA cam (custom grind from Comp via Bret Bauer)
JBA shorties

Looking for a TBSS intake and bigger DBC throttle body.
 
So far, so good. Dyno'd last Friday, made some nice, respectable numbers. 317hp @ 5000, 351tq @ 3800. At 2200 rpm it's already up to 300tq.

The next build is probably going to be a hot little 6.0 with a carb in my S10.
 
so the intake flip is a pretty simple swap? I like the idea of the air filter under the dash on a buggy!
 
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