Slow Z28

iTrader: (19)

since my ls1 block has a nice bay window in it, i was just looking through stuff that would work in the car. with the 6.0L motors, you need to use a 2001+ crank right? is it the same for the 5.3L motors?

Reckless and Noone, i'm pretty sure you two had/have 5.3L motors at some point. What year shortblocks did you end up with?

as for those who are gonna ask why i was looking at these, i figure why not.

Chris

BigTex

iTrader: (16)

Any 99+ 4.8/5.3 block will work. They have the same bore @ 96.01 and are the same physical part. The 5.3 has the same stroke as the LS1, while the 4.8 has a shorter stroke.

For the 6 liter stuff, stay away from 99-00 years that have the iron heads and longer crank.

Slow Z28

iTrader: (19)

so for those 99+ 5.3L motors, it's the same stroke, and is it the same crank itself? thanks again

Chris

Slowverado

why exactly would anyone want to put a 5.3 into an fbody? just curious.

Matt

DONAIMIAN

iTrader: (18)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by slowverado:
<strong> why exactly would anyone want to put a 5.3 into an fbody? just curious.

Matt </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If you blow your motor its a cheaper alternative for the time being. I dont think I would do it. But then I would just the fact that its not too common and to see what numbers I could get.

Slow Z28

iTrader: (19)

i can find a cheap shortblock. it's cheaper than a 6.0L and cheaper than an LS1 shortblock. You can bore it out to displace the same cubic inch as an LS1 and then you'd have an ironblock motor for nitrous. that is what i was looking into doing.

Chris

Reckless

iTrader: (9)

Not sure which year mine was, but I got it from ARE. I used an LS1 crank in it that was machined and balanced with my internals by ARE also.

Other than that, any 6.0L or 5.3L block will work. Just use an LS1 crank in there and it will work just fine.

NoOne

Yeah I have a 5.3 block in mine with a stock LS1 crank, works fine.

Slow Z28

iTrader: (19)

would it be ok for a nitrous motor then? isn't that 3.905 bore the maximum it can go? so would that be too thin of a cylinder wall for a large shot?

Chris

LS1derfull

Shaun (VALVEGOD) told me recently that 5.3 for New Trailblazer was aluminum 5.7 block they just dont bore it to 3.900" TO COME UP WITH 5.3 liters.
That is good news for serious boost or nos cars that want thicker cylinders for max endurance!
Leave it to Chevy to use same part for as many applications as possible! Result is many options and lots of availability. None of the dark side oh yeah 4.6 block is one height but 5.4 wont fit! LOL! <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" />

<small>[ April 15, 2003, 06:57 PM: Message edited by: LS1derfull ]</small>

Slow Z28

iTrader: (19)

thanks Todd!

Chris

Pro Stock John

iTrader: (34)

You could buy Bill's shortblock and then bore it to 3.905 Chris.

Slow Z28

iTrader: (19)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by z28kid98:
<strong> would it be ok for a nitrous motor then? isn't that 3.905 bore the maximum it can go? so would that be too thin of a cylinder wall for a large shot?

Chris </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">anybody got an answer for that one??

CHRISPY

I would go with the iron block. For the extra little bit of money you could get 370ci.
Chris