Complete LS3

[A1971Blazer]

I'm sure that if you look around, you can find a shop that will do the swap turn-key...but as mentioned, it will be expensive...I'm doing my own, but it's not my daily driver.....so time isn't a huge concern

right now, I'm all in with 90% of everything I need at around 5K
.... a low miles, 2002 Fbody 5.7, all aluminum true LS1....a fully rebuilt 4L60E.....and NP241C transfer case......Entropy LS swap radiator....reworked harness, efi fuel tank and high pressure pump...
The other 10% is all the little stuff to button it all up...plus my time..!

[bcwilson_1]

Originally Posted by A1971Blazer

I'm sure that if you look around, you can find a shop that will do the swap turn-key...but as mentioned, it will be expensive...I'm doing my own, but it's not my daily driver.....so time isn't a huge concern

right now, I'm all in with 90% of everything I need at around 5K
.... a low miles, 2002 Fbody 5.7, all aluminum true LS1....a fully rebuilt 4L60E.....and NP241C transfer case......Entropy LS swap radiator....reworked harness, efi fuel tank and high pressure pump...
The other 10% is all the little stuff to button it all up...plus my time..!

That sounds more like the numbers I want. If I can't go ls3 for that I'll just go basic 5.7 efi. I don't care really that much about what engine as long as it's efi andI can tow my boat at hwy speed for more than 10 mpg!

[mongocanfly]

in my 81 ton it had a 150 or so hp 350 sm465 with 4.10s when I got it...barely got 10mpgs empty...I dropped in the lq9 at 345hp put in a nv4500 with the 4.10s and now I get 17mpgs empty...and PLENTY of power...I regularly pull 9500lb gross loaded trailer...

[bcwilson_1]

Originally Posted by mongocanfly

in my 81 ton it had a 150 or so hp 350 sm465 with 4.10s when I got it...barely got 10mpgs empty...I dropped in the lq9 at 345hp put in a nv4500 with the 4.10s and now I get 17mpgs empty...and PLENTY of power...I regularly pull 9500lb gross loaded trailer...

So would simply getting an overdrive transmission help a lot with highway speed 60+ with my current setup or would I still need new gears? I was thinking 3.73 or something. I have 3 speed and 4.10.

[mongocanfly]

I'd keep the 4.10s and get a od trans....

[vannatta20]

I do standalone harness for the gen iv. I would like get one going in a classic truck for someone on the forums here. The harness is plug and play with only two wires that get hooked up. Brake lights and ignition. I do them for the truck engines and ls3. They main benefit is using the 6l80e is you get better gear reduction for tire roasting burn outs and they are strong to handle the power. Here is a vid with a gen v in a lightweight pickup. The truck is serious ly fast for being a stock 5.3 with 6l80

https://youtu.be/uj078sfLnhs