fakky

Guys

Wondering why people arent sticking a LQ4 from a hummer in their 5.3=>6.0 swaps.

Cant find a thread anywhere on someone doing it - makes me think theres a reason ?

FFDP

iTrader: (2)

Mainly because it's no different than the LQ4 found in the heavy duty trucks. Also the fact that they made like 15x the amount of 2500/3500 trucks and vans so it's easier to find.

fakky

So as par as programming, fitment and swapping - exact same as the HD truck LQ4.

I did notice in some compatibility table I read somewhere that the HP was ~15 HP lower than the truck LQ4. Not sure if different intake etc.

Just dont want to buy a hummer LQ4 to find different bell housing or programming or some other expsensive 'gotchya' ... etc Again - just thought it was strange I couldnt find 1 thread on multiple forums. Only guy I saw who did it was subaru in like 2005. But not details.

thanks !

1FastBrick

iTrader: (17)

The Engine is the same. I believe the Hummers used a 4L65E transmission so that might be why it was de rated 15 hp.

fakky

Yes its is.

thanks guys !!

fakky

Well - I know am the owner of a LQ4 from a hummer and 4x4 4WD 4l65e

Since im here asking questions - a few quick other ones .....


1) Best Upgrade for the money - looks like a CAM followed by a milled head to raise compression - sound right ? Theres a lot of info out there but some is 10 years old.

2) 4l65e 4WD trans. Is there much of a market for these - thinking of selling or just pulling out the internals and putting to 2WD output shaft. Never done that before but seems not TOO hard - rmove forward drums, intermediate, pump and such ... replace.

arthursc2

iTrader: (5)

just do an 80e swap and leave the truck 4wd. you can replace the front diff with a 4wd one, and get a different T case to mate to the 80e. Others know the numbers better, but there is an electric shift 4wd case from the 2500 series you can use.

I wouldnt, under any circumstance, neuter a truck by removing the 4wd.

fakky

Its going in a 2WD 57 chevy panel. IFS.

No point having the 4WD.

arthursc2

iTrader: (5)

fakky

No problem....

It wasn't that clear anyways as I jumped in with just there in questions