Can you put a 3.905 bore in a 5.3 block and use a stock ls1 crank and use 6.125 rods to get a 360 ci motor?

 

That would be a 347ci (3.905" bore/3.622" stroke). But yes, a 5.3l block will go 3.905".

Jason

 

how much is it to get the motor bored on average and what size bore is the 5.3?

 

Most machine shops will bore and finish hone a block for $150 or so.

 

Also if you want a sleeper truck, just order in a 383 Eagle (or what ever brand) rotating assembly and go out and have some fun

 

I have a offset grinded crank with forged rods and crank, that equals a 360ci, I can t decide on a iron or aluminum block?

Bo so it should only be 150 or so to get the block bored?

 

ok quick question here....if he got a stroker assembly (thus, new crank required), would he have to get a line hone? or is that only if new main caps are installed? thanks.

 

That will be +0.125 overbore.

 

Some shops charge more than others, $150 would be the minimum. Changing cranks does not warrant line honing, swapping caps or swapping over to studs from bolts does....as does wear/misalignment.

 

Sweet, thanks for the reply bo.

 

It's highly recommended that you get the block checked out after a drastic bore. I'm surprised you haven't been assaulted yet...maybe the elders are tired lol.

I have a 5.3L in my RX7 and as far as I've seen from what I've read, manufacturers do their best to cheap out on everything, including blocks with more meat between the bores than the min req'd.

This, along with the extra cost, is why shops recommend getting your block "magnafluxed" after it is bored.

I think you should do what everyone else does...spray your setup until it blows up and get a built motor.

 

what is the difference in weight between the 6.0 and 5.3 blocks?
the ls1 weighs?