Differences in model years of LS motors
- Thread starter Doppleganger
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WFO
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- Dan
- Truck Year
- 1986
- Truck Model
- K20
- Engine Size
- 350
I bought mine new, but it was late in the year. Maybe they changed mid year.
Termite_Delight
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- Andy
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- 1976 1975
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- K2500 K2500
- Engine Size
- 350 L33
My 2009 1 ton van has a 6L / 4L80e. Bought it in Missouri & had it shipped north.
Doppleganger
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- Chris
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- 1985
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- K20
- Engine Size
- 5.7
Whats the biggest difference between the 5.7 and 6.0? I've heard the 6.0 was a torque monster.
TPISly-C10
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- C-10 shortbox
- Engine Size
- LQ4 6.0L
Find a 2004 LQ4 6L for $500 for my swap i all ready got a 4L80E and all the wiring,PCM, ect (GMC Sierra donor)...to made my swap easyer! 
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4WDKC
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- V10
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- 350
My moms 03 Silverado was DBW, had to clean the tb on that damn thing because it was throwing a code.
RoryH19
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- 350 TBI
My 04 Escalade donor is DBW (LQ9 6.0 & 4l65e).
LQ9 has more hp and torq due to piston design.
As mentioned above I would stay with Gen 3 engines to avoid DOD and other fuel mileage features. You can have DOD removed when programming if you find a good deal on your swap.
If you want a 4l80e, I would suggest finding a 3/4 or 1 ton and pull together as a working unit instead of piecing together. This will help avoid any issues during your swap.
This combination will more likely be LQ4 and 4L80e.
As far a DBW goes...I prefer this option. No pedal cables to deal with and it's simple to setup cruise control, just need a 4 wire column switch (83 and up). For the pedal you can use the donor, or if you want the same look as original just use a 90's 6.5 diesel pedal. This is what I've done. Only requires swapping 2 wires on the assembly.
LQ9 has more hp and torq due to piston design.
As mentioned above I would stay with Gen 3 engines to avoid DOD and other fuel mileage features. You can have DOD removed when programming if you find a good deal on your swap.
If you want a 4l80e, I would suggest finding a 3/4 or 1 ton and pull together as a working unit instead of piecing together. This will help avoid any issues during your swap.
This combination will more likely be LQ4 and 4L80e.
As far a DBW goes...I prefer this option. No pedal cables to deal with and it's simple to setup cruise control, just need a 4 wire column switch (83 and up). For the pedal you can use the donor, or if you want the same look as original just use a 90's 6.5 diesel pedal. This is what I've done. Only requires swapping 2 wires on the assembly.
dougbert
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- Engine Size
- 5.3L - 2002 Silverado, rebuilt top end, long tube headers
Doppleganger
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- Chris
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- Truck Model
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- Engine Size
- 5.7
A guy my buddy works with has an '01 8.1L with Allison trans from a very rotted truck....<100k. Sounds like a beast.
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- David
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- 1986
- Truck Model
- K10/LM7 5.3/4L60e/np208/3.73/32"
- Engine Size
- 10 yrs Air Force
And read his post on his swap in his signature. It's almost an encyclopedia set lol.
Madhorn
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- Truck Year
- 1977
- Truck Model
- K10
- Engine Size
- 5.3/NV4500/NP205/4:56 gear/35in tires
I used LT1swap for a good share of my swap. A great source of information. Had him flash my PCM as well.
78C10BigTen
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- Ted
- Truck Year
- 1978
- Truck Model
- C10 BIG TEN
- Engine Size
- 350
A guy i know has one also. If it wasnt so ugly id think about buying it. Heard itll pull down a house but wont pass a gas station.
