Stampede4ever

How far could you bore the LS4, and still be safe? And isn't all or most of the LS? motors the same except the bores?

Thanks.

50chevy

iTrader: (2)

According to the book "Chevy ls1/ls6 V-8's" the 4.8/5.3L block can "easily be bored to the 3.893 inch (5.7l bore)". The 6.0L block is pretty much at the max for bore size: 101.6 mm (sorry for meteric and standard measurements)

Note: All the LSx motors use the same stroke crank except for the 4.8L engine that has the 96mm bore like the 5.3 but has a storter stroke crank. The 5.7 ls1 has a 99mm bore, as i have read in this book.

Swifster

This isn't true. The LS4 is an aluminum block. The 4.8L/5.3L truck versions are cast iron. The aluminum engines have the same boring limitations as the LS1, LS6 or LS2.

ssheets

iTrader: (1)

101.6mm = 4 inches