mcfarlnd

iTrader: (15)

i know people have done the math but, has anyone actually tried to put a 4.8 piston on a 5.3 rod? im about to have a 4.8 laying around and i have a 5.3 rotating assembly and was curious if anyone has tried it? if not i guess ill find out later than sooner....

kbracing96

iTrader: (26)

Be a pioneer and just do IT!

PathfinderJr

iTrader: (6)

isn't that going to just result in a flat-top piston 5.3?? ie, that L33 all aluminum 5.3 H.O. engine, or whatever it's called??

kbracing96

iTrader: (26)

Yes, It has been posted on here that the 4.8 piston and the L33 5.3 piston are the same part number...

mcfarlnd

iTrader: (15)

im gonna do it. to some it may sound stupid and when you have all the parts laying around the garage after 2 engine builds i figured why not try it. i guess ill build a flat top 5.3 after i build this iron 5.7. whatever keeps me busy and keeps me from pissing off the prego wife is good.

mcfarlnd

iTrader: (15)

whats the just about? to answer your question, in theory yes......itll be iron block though.

BlackGMC

iTrader: (31)

Hurry up and come pick up the block, i am getting tired of moving it around...

2001CamaroGuy

iTrader: (5)

whats the compression ratio on the L33s? regular 5.3s is 9.5:1 right?

Phantom

iTrader: (16)

Aren't the wristpin locations different between the two?

mcfarlnd

iTrader: (15)

it has been stated that they are not in different locations. i am searching right now to see if the pistons are indeed the same part number between the l33 and 4.8. i did find this but, it ends in a pissing match and nothing gets resolved. it starts on post 10.
https://www.performancetrucks.net/fo...d.php?t=421686