how many cubes can you get out of a 5.3 block? is it the same as and 5.7l ls1 block?

 

The only main difference is it is iron. It can be honed out to 3.905ish just like LS1 blocks. You can also fit the same larger aftermarket cranks in there.

 

they do make aluminum 5.3L blocks

 

I have read about a 5.3 stroker, where you just put ls1 rods and pistons in a 5.3 and it becomes a 5.7 but dont know this for sure cause i cant find anything that i read.

 

ok so it is a smaller block then....i was wanting to see how big i could make it and put it in the camaro. but i think ill just use the heads then

 

they use the same rods already, the pistons are the only thing you need to change.

 

I think the biggest you can go safely on that block is 388 cubes. 4" stroke crank with 5.7L bore.

 

not to hijack but how big can you safely go with the ls1?

 

393 is as big as i have seen.

 

with or without re-sleeving?

 

both.

 

Without is about a 3.90x bore and a 4.125 stroke. With, is a little less than a 4.200 bore and a 4.125 stroke.

 

the crank on a 5.3 has a bigger Rear Main than the ls1


Ls1 crank



truck crank


it might be hard to tell but the truck crank is like a half inch bigger than the LS1 crank

 

i got a 5.3 motor that has 86k on it and im just wondering if i should (or can) build a 383 and put it in my camaro? its a complete engine...came out of a suburban. or should i just have the heads reworked and port the throttle body and put them on my car?

 

I think that's only the 99 and 2000 truck cranks though.

 

that was the 6.0 early cranks.

 

When i bought my 05 2wd truck, the 4x4s had alunimum blocks in them.

 

would someone help me out on my Q?

 

if you want to stroke an iron block, find a 6.0. they are cheaper, way almost the same, and have way more cubes. if you want to stroke a smaller cube engine, then go with a 5.7 block. the lighter engine would be great stroked with some 5.3 heads.

 

I am building a 396
3.905 bore and 4.125 stroke
its actually 395.xxx so I say 396