The Ford Barn

trainguy · 05-09-2010, 01:41 PM

Will the 59a block safly take a 3.5/16 bore?If so will I have overheating problems?

Pete · 05-09-2010, 01:53 PM

3 5/16 is a safe overbore.
No overheating problems.
Be sure to have the block pickled before
doing any machine work on it.
Hot tanking alone will not get the rust out of the water jackets.

296 V8 · 05-09-2010, 02:09 PM

I’m no expert by any stretch but I have seen a bunch of em get bored at my buddy’s shop. In 10 or so years iv seen one 59 block hit water in one hole at 3 5/16”.
May have been rusty....could have been core shift. It got fixed.
That being said im not scared mine is at 3 3/8”.

Pete · 05-09-2010, 02:24 PM

Quote:

Originally Posted by 296 V8

I’m no expert by any stretch but I have seen a bunch of em get bored at my buddy’s shop. In 10 or so years iv seen one 59 block hit water in one hole at 3 5/16”.
May have been rusty....could have been core shift. It got fixed.
That being said im not scared mine is at 3 3/8”.

Roger on that.
I have seen a couple of them get into porosity at .030 over in the old days.
Sonic testing sure saves wear and tear on the boring bar these days.

harry jackshaft · 05-09-2010, 03:31 PM

i run a 3 3/8 bore and i can't get the thing hot enough..

Bassman/NZ · 05-09-2010, 05:22 PM

Sponsored Links (Register now to hide all advertisements)

I've even seen 3 7/16 but that's getting pretty dodgy.

05-09-2010, 01:41 PM	#1
trainguy Senior Member Join Date: May 2010 Location: Lehighton Pa Posts: 1,085	3 5/16 bore in a 59a block Will the 59a block safly take a 3.5/16 bore?If so will I have overheating problems?

05-09-2010, 01:53 PM	#2
Pete Senior Member Join Date: May 2010 Location: Wa. Posts: 5,409	Re: 3 5/16 bore in a 59a block 3 5/16 is a safe overbore. No overheating problems. Be sure to have the block pickled before doing any machine work on it. Hot tanking alone will not get the rust out of the water jackets.

05-09-2010, 02:09 PM	#3
296 V8 BANNED Join Date: May 2010 Location: nor~cal Posts: 455	Re: 3 5/16 bore in a 59a block I’m no expert by any stretch but I have seen a bunch of em get bored at my buddy’s shop. In 10 or so years iv seen one 59 block hit water in one hole at 3 5/16”. May have been rusty....could have been core shift. It got fixed. That being said im not scared mine is at 3 3/8”.

05-09-2010, 03:31 PM	#5
harry jackshaft Junior Member Join Date: May 2010 Location: napa ca Posts: 12	Re: 3 5/16 bore in a 59a block i run a 3 3/8 bore and i can't get the thing hot enough.. __________________ "There is nothing good about a flathead, other than the fact that they are old" Dennis Kurimai

05-09-2010, 05:22 PM	#6
Bassman/NZ Senior Member Join Date: May 2010 Location: Napier, New Zealand Posts: 2,001	Re: 3 5/16 bore in a 59a block Sponsored Links (Register now to hide all advertisements) I've even seen 3 7/16 but that's getting pretty dodgy.