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- LSx Swaps (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=206)

- - LS engine swap info (https://67-72chevytrucks.com/vboard/showthread.php?t=377348)

Re: LS engine swap info

Great info in one spot....Thanks Thealien!!:metal:

Re: LS engine swap info

Thanks Thealien! Needs to be a sticky! thanks again

Re: LS engine swap info

Glad some of you are finding this usefull

Re: LS engine swap info

This is exactly the kind of information I was looking for. I am going to try to fab all my mounts and hopefully my engine stands too. I will be looking to this thread for help. Thanks!

Re: LS engine swap info

Lots of good info here. Thanks, Art...

Re: LS engine swap info

Quote:

Originally Posted by Ackattack (Post 3689824)

If you want to do your own computer tuning I suggest HPtuners

You will have to have some tuning done to remove at least the VATS. I would also assume most of us doing swaps will not be running a lot of the emissions equipment, so that can be removed from the tune as well.

Once you get your engine up and running you can also edit other things like the timing and fuel curves (similar to re-jetting your carb and adjusting your distributor for the old schoolers). Additionally, if you run an electronically controlled tranny (ie 4L60E) you can change the shift parameters.

Very usefull tool. But, be careful because if you don't know what you're doing you can blow up your engine or ECM.

Also, this program allows you to monitor all of the sensors the engine is putting out, check and clear Check Engine Lights (DTCs) etc.

That is correct. I've been using Hptuner for a few years now tuning both of our 4th gen camaro's. Not just the tuning but this software is a must have for any diagnostic repair work needed.
In my opinion if you own a computer controlled vehicle then tuning software is a must have. Should have been included with the purchase of the car :lol:
That's one reason the LS swap is in the works for our blazer, I already have the tuning software.
Thanks Thealien for all the info, when I get some more time I'll definately look through it all.

Re: LS engine swap info

Excellent reference!!! Thank you for putting this together! A lot of useful information.

Re: LS engine swap info

In caes anyone want to bookmark this is now an FAQ- LINK

Re: LS engine swap info

im still trying to find info on the 2008 harness. all i can find stops at the 06-07

Re: LS engine swap info

All,

I contacted Novak Adapters and they said they would sell me PN ACG3 minus the compressor for $405.51. (reg $712.00) here is the link

http://www.novak-adapt.com/catalog/a...cation_kit.htm

I know they specialize in Jeeps, but mostly for LS?GEN III installs in those Jeeps. If you need this this isnt a bad buy,

Contact Ryan
Information@novak-adapt.com

Re: LS engine swap info

Whats the thread and bolt size for engine mount on ls

Re: LS engine swap info

LS Torque specs

Engine Torque Specs
Application Spec
Accelerator Control Cable Bracket Bolts 89 lb in
Air Conditioning Compressor Bolts 37 lb ft
Air Conditioning Compressor Bracket Bolts 37 lb ft
Air Conditioning Idler Pulley Bolt 37 lb ft
Air Conditioning Tensioner Bolt 18 lb ft
Air Injection Reaction (AIR) Pipe-to-Exhaust Manifold Bolts 15 lb ft
Camshaft Retainer Bolts 18 lb ft
Camshaft Sensor Bolt 18 lb ft
Camshaft Sprocket Bolts 26 lb ft
Catalytic Converter Nut 18 lb ft
Connecting Rod Bolts - First Design (First Pass) 15 lb ft
Connecting Rod Bolts - First Design (Final Pass) 60 degrees
Connecting Rod Bolts - Second Design (First Pass) 15 lb ft
Connecting Rod Bolts - Second Design (Final Pass) 75 degrees
Coolant Temperature Gauge Sensor 15 lb ft
Crankshaft Balancer Bolt (Installation Pass-to Ensure the Balancer is Completely Installed) 240 lb ft
Crankshaft Balancer Bolt (First Pass-Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes) 37 lb ft
Crankshaft Balancer Bolt (Final Pass) 140 degrees
Crankshaft Bearing Cap Bolts (Inner Bolts-First Pass in Sequence) 15 lb ft
Crankshaft Bearing Cap Bolts (Inner Bolts-Final Pass in Sequence) 80 degrees
Crankshaft Bearing Cap Side Bolts 18 lb ft
Crankshaft Bearing Cap Studs (Outer Studs-First Pass in Sequence) 15 lb ft
Crankshaft Bearing Cap Studs (Outer Studs-Final Pass in Sequence) 53 degrees
Crankshaft Oil Deflector Nuts 18 lb ft
Crankshaft Position Sensor Bolt 18 lb ft
Cylinder Head Bolts (First Pass all M11 Bolts in Sequence) 22 lb ft
Cylinder Head Bolts (Second Pass all M11 Bolts in Sequence) 90 degrees
Cylinder Head Bolts (Final Pass all M11 Bolts in Sequence-Excluding the Medium Length Bolts at the Front and Rear of Each Cylinder Head) 90 degrees
Cylinder Head Bolts (Final Pass M11 Medium Length Bolts at the Front and Rear of Each Cylinder Head in Sequence) 50 degrees
Cylinder Head Bolts (M8 Inner Bolts in Sequence) 22 lb ft
Cylinder Head Coolant Plug 15 lb ft
Cylinder Head Core Hole Plug 15 lb ft
Drive Belt Idler Pulley Bolt 37 lb ft
Drive Belt Tensioner Bolts 37 lb ft
Engine Block Coolant Drain Plugs 44 lb ft
Engine Block Heater 30 lb ft
Engine Block Oil Gallery Plugs 44 lb ft
Engine Coolant Air Bleed Pipe Bolts and Studs 106 lb in
Engine Crossmember Bolts (Large) 107 lb ft
Engine Crossmember Bolts (Small) 92 lb ft
Engine Flywheel Bolts (First Pass) 15 lb ft
Engine Flywheel Bolts (Second Pass) 37 lb ft
Engine Flywheel Bolts (Final Pass) 74 lb ft
Engine Flywheel-to-Torque Converter Bolts 44 lb ft
Engine Front Cover Bolts 18 lb ft
Engine Mount Heat Shield Nuts 89 lb in
Engine Mount Stud-to-Engine Block 37 lb ft
Engine Mount Through Bolts 70 lb ft
Engine Mount Through Bolt Nuts 59 lb ft
Engine Mount-to-Engine Block Bolts 37 lb ft
Engine Rear Cover Bolts 18 lb ft
Engine Service Lift Bracket M10 Bolts 37 lb ft
Engine Service Lift Bracket M8 Bolt 18 lb ft
Engine Valley Cover Bolts 18 lb ft
Engine Wire Harness Clip Bolt 37 lb ft
Engine Wire Harness Ground Strap Bolt 37 lb ft
Exhaust Gas Recirculation (EGR) Valve Bolts (First Pass) 89 lb in
EGR Valve Bolts (Final Pass) 22 lb ft
EGR Valve Pipe-to-Cylinder Head Bolts 37 lb ft
EGR Valve Pipe-to-Exhaust Manifold Bolts 22 lb ft
EGR Valve Pipe-to-Intake Manifold Bolt 89 lb in
Exhaust Manifold Bolts (First Pass) 11 lb ft
Exhaust Manifold Bolts (Final Pass) 18 lb ft
Exhaust Manifold Heat Shield Bolts 80 lb in
Exhaust Manifold Pipe Nuts 26 lb ft
Front Shock-to-Engine Crossmember Bolts 48 lb ft
Fuel Injection Fuel Rail Bolts 89 lb in
Generator Bracket Bolts 37 lb ft
Generator Rear Bracket-to-Engine Block Bolt 18 lb ft
Generator Rear Bracket-to-Generator Bolt 18 lb ft
Ground Strap Bolt (at Rear of Cylinder Head) 37 lb ft
Ignition Coil-to-Bracket Bolts 106 lb in
Ignition Coil Bracket-to-Valve Rocker Arm Cover Bolts 106 lb in
Intake Manifold Bolts (First Pass in Sequence) 44 lb in
Intake Manifold Bolts (Final Pass in Sequence) 89 lb in
Knock Sensors 15 lb ft
Oil Filter 22 lb ft
Oil Filter Fitting 40 lb ft
Oil Level Indicator Tube Bolt 18 lb ft
Oil Level Sensor 115 lb in
Oil Pan Baffle Bolts 106 lb in
Oil Pan Closeout Cover Bolt (Left Side) 106 lb in
Oil Pan Closeout Cover Bolt (Right Side) 106 lb in
Oil Pan Cover Bolts 106 lb in
Oil Pan Drain Plug 18 lb ft
Oil Pan M8 Bolts (Oil Pan-to-Engine Block and Oil Pan-to-Front Cover) 18 lb ft
Oil Pan M6 Bolts (Oil Pan-to-Rear Cover) 106 lb in
Oil Pressure Sensor 15 lb ft
Oil Pump-to-Engine Block Bolts 18 lb ft
Oil Pump Cover Bolts 106 lb in
Oil Pump Relief Valve Plug 106 lb in
Oil Pump Screen Nuts 18 lb ft
Oil Pump Screen-to-Oil Pump Bolt 106 lb in
Oxygen Sensor 31 lb ft
Positive Crankcase Ventilation (PCV) System Strap Nut (at Right Front Vapor Vent Pipe Stud) 106 lb in
Power Steering Pump Bolts 18 lb ft
Power Steering Pump Bracket Bolts 18 lb ft
Spark Plugs (Cylinder Heads-New) 15 lb ft
Spark Plugs (all Subsequent Installations) 11 lb ft
Throttle Body Bolts 106 lb in
Transmission Housing Bolt 37 lb ft
Valve Lifter Guide Bolts 106 lb in
Valve Rocker Arm Bolts 22 lb ft
Valve Rocker Arm Cover Bolts 106 lb in
Water Inlet Housing Bolts 11 lb ft
Water Pump Bolts (First Pass) 11 lb ft
Water Pump Bolts (Final Pass) 22 lb ft
Water Pump Cover Bolts 11 lb ft

T-56 Transmission Torque Specs
Application Spec
Backup Lamp Switch 20 lb ft
Clutch Actuator Cylinder Bolt 71 lb in
Clutch Housing Bolt 37 lb ft
Control Lever Handle Bolt 18 lb ft
Gear Select/Skip Shift Solenoid 30 lb ft
Reverse Lockout Assembly Bolt 13 lb ft
Reverse Lockout Solenoid 30 lb ft
Shift Control Bolt 13 lb ft
Shift Control Closeout Boot Bolt 18 lb in
Shift Control Knob 27 lb ft
Transmission Bolt 37 lb ft
Transmission Drain/Fill Plug 20 lb ft
Transmission Mount Bolt 38 lb ft
Transmission Mount Nut 77 lb ft
Transmission Support Bolt 66 lb ft
Vehicle Speed Sensor Bolt 89 lb in

Re: LS engine swap info

Quote:

Originally Posted by 70 Suburban (Post 3747616)

Whats the thread and bolt size for engine mount on ls

I know they are 10mmX1.5 but not sure on the length. I "think" it was 30 or 40mm.

Re: LS engine swap info

Here is the intake tightening sequence

Re: LS engine swap info

Is there a way to id a 5.3 motor? I was looking at one yesterday for a friend and back of the block shows both 4.8 and 5.3l. Price was good $500 with harness and pcm.

Re: LS engine swap info

good question.. mine was still in the truck. that how i know.. as for yours.the harness is a little different. I would think if you have the # off the ecm call the dealer and they should be able to tell you.. when in doubt ask.. right

Re: LS engine swap info

Quote:

Originally Posted by Pont406 (Post 3760254)

Is there a way to id a 5.3 motor? I was looking at one yesterday for a friend and back of the block shows both 4.8 and 5.3l. Price was good $500 with harness and pcm.

Not easy to tell but this is all I could find

Re: LS engine swap info

I didn't see it in here, but I may have missed it.

OBDII under dash connector (DLC) parts. If you didn't get the one from the donor, here is a source:

www.mouser.com

Connector (1), #829-12160437, $1.07
Terminals (4), #829-12129373, $0.21 each
Terminal locks (4), #829-12160437, $0.27 each

Re: LS engine swap info

Quote:

Originally Posted by glock35ipsc (Post 3763501)

If you saw my last post I will be doing just that with all the connectors, most of which can be bought cheapest at Mouser. If you click on the data sheet it will also give related parts such as the pin numbers.

Re: LS engine swap info

I've got a couple of powersteering questions. What thread adapters can be used on the ps box to allow use of the LS hoses? Second, my p/s pump has 3 hoses coming out of it, I know what 2 of them are...any guess on the third? Keep the info coming! I'm about 2 weeks away from jumping knee deep into finishing mine, :crazy:.

r/

EDIT: Here's a link to an oil pan discussion if you want to add it:

http://67-72chevytrucks.com/vboard/s...d.php?t=272174

Re: LS engine swap info

Quote:

Originally Posted by Hart_Rod (Post 3793039)

The third hose is another return line used in hydroboost pumps. I have read those pumps are a little better? I have heard people use either for hydroboost and non hydroboost without issues. You will just have to cap off the unused return line.

What I found as an easier solution on the whole power steering issue is remove the fitting off the back of your original power steering pump and put it in the power steering pump you have now (the one with the extra return line). By replacing that fitting you can now use your existing/stock power steering hoses with the new LS pump. Might have to tweak/bend just a little.

I'll check out the link although in a couple of the links early in my thread I have links to FAQ threads in a couple of places that discuss the different oil pans and their dimensions.

Re: LS engine swap info

Quote:

Originally Posted by Thealien (Post 3793169)

Good info on the 3rd hose. I don't have the old lines and I have all new lines on the new pump, that's why I was trying to go the other way. I'll price some new "old" lines tomorrow and if not to expensive, I'll just do that.

R/

Re: LS engine swap info

Quote:

Originally Posted by Hart_Rod (Post 3793195)

Sorry I don't have an answer on how to adapt (which I am sure there is some way). I pulled the engine out of my Jimmy so it was the easiest route to just change that fitting. Do you have access to an old pump? If not you will need the fitting out of a pump and the hoses. At that point it might be just as easy to have a local NAPA or? make up a new line for you.

Re: LS engine swap info

thealien I tried NAPA but if you tell them is for power steering they will not make them, I guess is a liablitly thing... what I did is I got for the high pressure side at the rear of the ls pump used a 16mm o-ring adapter to a #6 AN , they I used 2 ft of braided line, then a #6 an adapter from the braided line to the 18mm o-ring adapter at the gear box, and for the return line, I used the original high pressure hose that is a 16mm o-ring that fits on the return from the gear box, I cut the line, flare it and used rubber hose witha clamp,, and capped the 3rd line.. I think it cost me around 50 bucks including the fittings.. since you need 1-18mm to #6 an adapter, 1-16mm to #6 an adapter and 2 feet of the braided hose... hope this helps a little total cost was around 50 or less,,, cant remember