340

[Tnplumber]

How much can you safely bore a 340 block?

Scott
72 dart

 

[demon seed]

Safely .040, .060 with an ultra sound inspection first. Come on out all you experts what say you? LOL

Terry

 

[mopars0]

:burnout:

Not a expert by any means.... mine is 40 over but it was already done when I bought the car.

 

[Tnplumber]

Thanks for the answers. I saw a 340 on craigslist with .20 over pistons, needing a rebuild. I've been thinking of finding a 340. I know 360s are cheaper and argueably make more power but i always wanted a 340 a body.

Thanks again,

Scott
72 Dart

 

[djwhog]

But .060 is pushing it but if you get it sonic tested you may be OK, just rememberit will run a little warmer with thinne walls. But I have seen a lot of older 318's and 340 at 60.

 

[zhandfull]

I'm running a 340 block at .040 over with a 4" stroke no problems

 

[Tnplumber]

I'm running a 340 block at .040 over with a 4" stroke no problems

Cool good to know. thanks again

Scott

 

['64 Cuda]

Tnplumber, is that a pic of you in your avatar? :grin:


:burnout:

 

[340srule]

You should be fine with a 40 over block,i would'nt go 60 without having the block sonic checked,as for a 360 making more power then a 340 that all depends on who builds it..

 

[Tnplumber]

Tnplumber, is that a pic of you in your avatar? :grin:


:burnout:

I wish my mullet looked that good. :laughing:

 

[R72Demon]

I have a 340 thats .060 over

 

[340mopar]

I also have a 340 that is .060, I filled the block half way with Hardblok to help support the cylinders.


Chuck