GTO_kid_2006

I.m starting a 5.3 build and got the everything rolling just need ideas and thoughts of what 5.3 for a turbo. I looked through Google but to no avail.

The question is what 5.3 would work best with a single front mount, for reliability and performance, its going to be a 90% drag 10% other. I was thinking L33 having a little more compression for low end get off the line a little better, but its alum. So and thoughts of what 5.3?
LM7
L33
LH6
LY5
Or does it even matter and just chose between alum or iron

Rob

HexenLord

How much power you looking to make? The aluminum block will hold 1000 HP and weighs 60 lbs less. The L33 has 799 cast heads which are basically LS6 heads. It also has the stronger rods. The only real downside to it is probably going to be initial cost, as I found all of the other engines for 600 to 850 before I finally found an L33 for 1200.

Ryans99ls1

iTrader: (16)

all of them have shown to hold great power. The l33 is newest and depending on what computer you want to use, you may need some conversion/adapter harnesses. If i were going 5.3, id get the l33

Z28-Vortec

iTrader: (4)

I would personally get an iron block, but thats me. Nothing wrong with aluminum. I just see it as with an iron 5.3 so you can punch it out to LS1 spec later.
If daily driver I would get the higher compression L33, that way you dont always need boost.
As far as what engine to go with, More or less your preference.

I added some links. I don't know if you seen these.

Some links

https://ls1tech.com/forums/generatio...5-3engine.html

http://www.performancetrucks.net/for...y5-l33-494902/

https://ls1tech.com/forums/forced-in...l33-boost.html

Z28-Vortec

iTrader: (4)

How is the L33 the newest when it is a 3rd Gen while the LY5 is a 4th Gen motor?

HexenLord

I don't really see much point in boring it out to a 5.7 to match an LS1. The .4 liter increase in displacement could be offset by a single pound of boost. Not to mention you'd be making one of the best things about the 5.3, the thick cylinder walls, thinner and weaker.

GTO_kid_2006

Agreeed. But would the l33 have the right reduction for a 01t/a

1fast bird

iTrader: (22)

Assuming you mean reluctor wheel? Lingenfelter makes a conversion box to use on a 58t reluctor wheel motor, so your ecu can read it. Not positive what reluctor they have as they were 3rd gen motors. Pretty sure they started production in 05 which would be around the time they switched to the 58T. Either way the box is an easy solution

Ryans99ls1

iTrader: (16)

I always get that wrong and think its a gen4 too, itll stick one of these days.

ls6-240sx

How can you tell what 5.3 you have?

Z28-Vortec

iTrader: (4)

You may not see the point but if I have to do a rebuild why not and for a cast iron block boring really doesn't make it all that much "weaker" still stronger than aluminum. Hell a stock LS1 can take quite a bit of boost just fine.

Z28-Vortec

iTrader: (4)

Easiest way is what vehicle it came from.

This is from wiki but has pretty much what you need, its about half way down the page.

http://en.wikipedia.org/wiki/GM_Vortec_engine

ls6-240sx

Yeah thats the problem, i dont know what vehicle it came out of. It was already in the car when i bought it.

Oh and the link doesnt work.

Z28-Vortec

iTrader: (4)

Fixed the link above

Well, I guess just build it up then who cares what 5.3L you have lol