inline300

Lets say I want to purchase a 5.3.

Lets say I want to bore it .120 and drop stock LS1 pistons in it.

Im told this can be done on a 5.3 iron block, can this be done to the 5.3 aluminum block as well, without installing new sleeves?

Thanks

GR33N GoblinM6

iTrader: (14)

you wont be able to take the sleeves .120 on an aluminium block.. sorry.. if you need 5.7, get a 5.7 it will be cheaper.

slowride

iTrader: (3)

Yes, I believe they are the same block with more bore size on the 5.7. I remember some topics where people started out with a stock 5.3 aluminum block (stock sleeve) so they had room to true it up if needed.

inline300

So we have one no and one yes.

Do we have a tie breaker?

Thanks fellas

cablebandit

iTrader: (37)

iron block yes...aluminum no idea

GR33N GoblinM6

iTrader: (14)

from what i have read.. you can not take aluminum sleeves to that... i have read and heard you can have them honed.. but not bored out like you want to..

NO-OPTION-2002

iTrader: (2)

Engine Masters had an article within the last 2-3 months were Tony Mamo built a 600+ (crank) hp 383, using a new 5.3L ALUMINUM block bored out to 3.898" with a 4" crank.

So yes, based on that info, I'd say it is very possible.

slowride

iTrader: (3)

It was this buildup and Jason(I think) from Thunder Racing's 383 where I noticed something similar. I believe the sleeve has the same outer diameter and is either thicker or bored more for the 5.7L's