is the 5.3 block and the 4.8L. block is the same block can i put in a 5.3 crank in the 4.8 block and bore it out to a 347 with 3.905 bore with forged pistons for FI and will work fine with no problems. And is the wheel in the back of the crank with the same part number is the same as all the cranks with the same part numbers it will have the same teeth on them.

 

anybody knows

 

yes u can put 5.3 intenals in a 4.8 block

 

but can i bore out he 4.8 block to a 5.7 with 3.905 Mahle pistons is it possible and with no problems with the block still having enough metal in the bores for FI engine turbocharged.

 

its been done

have it sonic tested

 

5.3 and 4.8 are the same block.

 

same bore differant stroke, and the 4.8 block is cast iron, 5.3 block is aluminum

 

Only the new 5.3 L33 blocks are aluminum. The Iron blocks from 99 to present are identical and cast with 4.8/5.3 on them.

 

my bad

 

So I Can Bore It Out To A 5.7 The 4.8 Block Right It The Same Block It Will Be The Same .