413 Industrial block

[bobs63wagon]

Asking for a friend. Is it possible to bore a 413 industrial block to make a 426 cu in ? He has an industrial block and asks if that is possible. Not sure if it makes the block too thin. Maybe somebody has had some experience with that situation. Thanks.

 

[pnora]

You will guess till the end of time until a sonic test is done to determine wall thickness.

 

[Dave6T4]

I have done it with no problems. Here's the one I had. Dressed up as 426 Street Wedge with "dealer installed" 2X4 setup.

 

[69Bee]

413 to 426 is 0.070" over, and should be fine, but I would also suggest sonic testing the block to make sure the walls are 0.125" or thicker.

 

[Outsider]

Never found one of the 413 industrials that wouldn't go to 426 and work well. Shifted above 7k, and actually had shorter life with .030" over 383 blocks which would eventually crack at the bottoms of cyls.

 

[71Beeper]

One of the latest videos from Nicks garage is a 413 bored out to 426.

 

[Tony Tee]

Happy pre 4-26 day!

 

[peabodyracin]

Bob I’ve bored 2 413’s in years past and haven’t had a problem. The last one is still running in my wagon.

 

[bobs63wagon]

Bob I’ve bored 2 413’s in years past and haven’t had a problem. The last one is still running in my wagon.

Good to know. Sure sounds like it should be fine from the replies.

 

[Dave6T4]

413 to 426 is 0.070" over, and should be fine, but I would also suggest sonic testing the block to make sure the walls are 0.125" or thicker.

Actually .062"

 

[69Bee]

Actually .062"

LOL, ok, I didn't actually look it up, but rather went from old memory...