LS engine swap info

[Thealien]

Added some links

[echo72]

Thanks for the info.

[Ackattack]

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.

[Firebirdjones]

Originally Posted by Ackattack

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
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.

[Ticker]

A couple of quick links to great LS swap articles:

CarCraft LS A-Body Swap Part I

CarCraft LS A-Body Swap Part II

CarCraft LS Swap Accessory Guide

[Critter]

Thanks Thealien! I have a lot of info saved but it is nowhere as complete or this organized. GREAT JOB! Needs to be a sticky for sure!

[81ShrtBox]

I will need this info....
Posted via Mobile Device

[feller]

did not read everything so sorry if i missed it but in a 4x4 can i expect to get better MPG's with an ls or lt swap? someone told me that in a 72 with a 355 and an edelbrock carb that would probably be as good as it gets, but i can not hardly belive that with 6.0's and 5.3 getting 15+ mpg in a new truck it has to get better than an old 355 ( mabey not)

[Firebirdjones]

Originally Posted by feller

did not read everything so sorry if i missed it but in a 4x4 can i expect to get better MPG's with an ls or lt swap? someone told me that in a 72 with a 355 and an edelbrock carb that would probably be as good as it gets, but i can not hardly belive that with 6.0's and 5.3 getting 15+ mpg in a new truck it has to get better than an old 355 ( mabey not)

Absolutely it should do better in mileage.

I can tell you right now, my 72 blazer with it's 355, mild crane cam, performer rpm intake and 750 holley carb, 350 turbo, 3.07 gears and 33" tall tires. I get 13 mpg around town in stop and go. On the highway cruising at 70 mph at 2400 rpms, I get 16 mpg consistently. No overdrive, no fuel injection. Just a good tune and sensable driving.

With the 6.0 (364 cubes) and 4L60E I am certain I'll do even better. For starters, the factory tunes in the trucks are pretty lame, with single digit timing in the tables, etc....it's no wonder the new trucks aren't that great on mileage. All the emissions stuff to run through doesn't help much either.

Also there are a few tricks I can do in the tune to find 2-4 mpg in the part throttle areas. Doing the math,,cruising as 70 mph with this setup is only 16-1700 rpms (I'd like to see it a tad higher) and a gear change may be in order.
In any event, by the time I'm done, 20mpg or more highway isn't out of the question.
I tune my 4th gen camaros, and get 30+ mpg highway out of those with the LS1/6 speed combo.

[grennberet02]

Started my LS swap and the 98 camaro exhaust manifolds did not fit using the transadapt plates and the stock motor mounts.
I may be using shorty headers instead for the exhaust set up.
Plenty of room near the rear of the motor.
I broke one of the rear coils as it hit the brake booster. (accident)
You may think of removing these before installing.
I used a Poly mount with a single stud in the middle and only had to move the engine mount to the rear using one of the existing holes.
The drive shaft will need to be shortened. Using one from a burb.
Just wanted to add this to the list.

Thank you,

Luis G.

[jahnke]

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

[low_84_inchaska]

is it true that if i am running the truck intake, i do not need the corvette regulator filter unit? I can just run the external fuel pump and a filter to the rail that on the truck intake has a integrated regulator?

[gcburdic]

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

[rongstad]

Thanks Thealien! Needs to be a sticky! thanks again

[Thealien]

Glad some of you are finding this usefull

[mcbassin]

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!

[Chevy-Art]

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

[gchemist]

LS1 serpentine belt bracket modification
http://www.maliburacing.com/forum/vi...hp?=34&t=79059

77 with a LS1 5.3 swap
http://www.hotrodlane.cc/77chevytruck/77chevy.htm

[N2TRUX]

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

[70 Suburban]

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

[Clyde65]

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

[70 Suburban]

Whats the thread and bolt size for engine mount on ls

[Thealien]

Originally Posted by 70 Suburban

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.

[Thealien]

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

[Thealien]

Here is the intake tightening sequence