bodom666

Hi Guys

I own a 71 Chevelle, i want to put a third generation engine in my car this winter. For now i dont want a lot of HP , just cruise with my car
But i'm planning in the futur to add Nitrous or Blower
I found 2 different complete engine from a scrap yard at the same price
one is a 5.3 2005 from a 4x4 pick-up truck and the other was 6.0 2003 from a 4x4 pick-up truck also.
I'm confused now, which one in your opinions was the best choice and why ???
Any help will be greatly appreciated

Darracq

iTrader: (1)

6.0 more torque for a heavy chevelle. 6.0 worth more money

TT402LS1

iTrader: (5)

6.0 - Bigger always better!

Stu Cool

iTrader: (13)

There is no substitute for cubic inches! The diffence is about 40 cubic inches. With all else equal (mileage, accessories, price) I would go with the 6.0. No reason not to

Pat

Rowdy94

iTrader: (13)

Its replacement for displacement. It has to rhyme. You know this.

bczee

iTrader: (12)

6.0.. end of story..!

Red89GTA

For the same price go 6.0!! (it rymes too) The milage difference will be negligable, the power difference won't and it will support more HP when you decide to go nuts. Have fun with that thing

pwrtrip75

iTrader: (8)

Both an be made to do the same thing. Bigger engines have more rotating mass.
Ive always been a fan of de-stroked big bore engines.
That 5.3 has all the potential in the world to run side by side with a 6.0L
It all depends on if you know how to apply it. If you dont just build a big cube engine.

shifty`

iTrader: (3)

Might as well go big. Gas mileage is w/in 1mpg between all of the V8's when I looked at the stickers shopping for cars in '03. I doubt you're going to find much difference in the physical size of the engines, or the way they bolt up.

Cop Car

iTrader: (14)

6.0 by far. later on you can run L92 heads on it. 5.3s limit your head choices. plus there is a noticable diffrence in displacement. 327 < 364

btw they have the exact same stroke and near identical rotating mass.

87ssMonte

ls6 on a carb would be my vote. 400hp and minimal modification to that lovely car...

pwrtrip75

iTrader: (8)

You can run the same heads on a 6L as a 5.3
But the 6L heads have the same exhaust D-ports as the LS6 heads.
they make 2 different 6.0Ls though, one is a lower compression they are the LQ4 and LQ9, not sure which is which. But in a N/A application the 6.0 would be better, you can put 5.7 heads on it and it would raise the comp up. But boosted on a budget the 5.3 w/ 6L heads is 8.6:1 compression and perfect.

bodom666

Thank you guys for all the inputs

The choice is clear: 6.0

But 87ssMonte speak about a carb set-up, how can i run a carb on that EFI engine

Bye

Tuf-Titan

You know what they say bigger is better. Go with the 6.0 it will give you room to grow later on whenever you feel like updating. Not only that the 5.3 block weighs more.

Cop Car

iTrader: (14)

you CANNOT run L92 heads on 5.3s, they needs a 4.00 inch bore. as for LS1/6 5.3 and 6.0 heads they all interchange. LQ4 is the 2500HD motor. LQ9 is the silverado SS and esclade motor. it is high compression