What is intailed in stroking a 5.3 to a 6.3? I've read about it being done, and was wondering what it takes. Just an Eagle crank, or does the block need to be bored also. What are the advantages/disadvantages to this vs. a 6.0 swap? Thanks for the help

 

I would think that you could get a 6.0L long block for less then all that machine work/new parts...then you have a stock setup, no custom parts to deal with....custom parts are cool, but a biiiiig problem if they need to be replaced, also have to chuck out the money again where as stock ones you can get used for cheap.

 

You need to bore the block out to 3.905 (stock LS1 bore) and also add a 4" stroke crank. Just adding the stoker crank will only add up to 359 cu in, plus you would need custom pistons and rods.

 

tdrumm is right on ( check my signature ).
As far as cost, you will build it yourself cheaper than a 6.0L long block ( the word is out, few good deals on 6.0's anymore ). Don't forget that the 4.8L block is identical so if you stroke it you can use either a 4.8 or 5.3L.
The parts are not "custom" once you get to the 3.905" block bore as it is the same as the LS1/LS6 and internals are plentiful.

 

Where did you get the stroker kit from? About how much do they run?

 

I got it from a non-sponsor so I will PM you the name. It ran $2000 plus $140 for ARP main bolts shipped. I have seen similar 4" stroker kits on eBay for about the same ammount.

 

i think lunati makes one?

 

Lunati does, and it's the best quality IMHO. I went with the Eagle kit since I was not going to be running 500+ Hp. Eagle is still 4340 forged and good quality, but the Lunati kit has knife edging on the balancers ( less oil windage ) and overall better quality control. Only down side is they charge for the quality, usually about $1000-$1500 more than Eagle.

 

That's boring the block 0.125" over. Boring to the limits is scary. Why not get 6.0L block and put the 4.0" crank in it, for 402 or 408 ci instead of 384 ci, since you are rebuilding anyway.

 

haven't had any problems with boring over that much. had it sonic tested too.


Isn't it supposed to be exactly the same block as the LS1 except made of iron?