Can a 292 be bored to a 312?
Can a 292 be bored to a 312?
Elder User
Joined: Dec 2002
Posts: 713
Likes: 1
From: Houston U.S.
Originally Posted by Walston
I have seen several time that a 272 has been bored to a 292. Can a 292 be bored to a 312?
Last edited by Janet40; Jan 13, 2005 at 05:20 PM.
Posting Guru
Joined: Jul 2001
Posts: 2,119
Likes: 2
From: Southern New Hampshire
pre 1960 292's will easily go to 312 plus .060 size. With the 60-64 blocks Id sonic test first. With the cost of 312 pistons being much higher than 292 and even their standard oversizes there isnt any real benefit to go that big. Plus every pass with the boring bar costs more money.
Many 272's and truck 256's will also go 312 but again sonic to be sure.
If you have a 312 crank then have it cut to 292 journals to run in a 292 block.
Many 272's and truck 256's will also go 312 but again sonic to be sure.
If you have a 312 crank then have it cut to 292 journals to run in a 292 block.
Senior User
Joined: May 2003
Posts: 285
Likes: 1
Mummert's website says a .060 292 with stock 3.30 stroke crankshaft will yield 301 cubic inches.
If you used a 3.44 stroke 312 crankshaft in that same .060 292 you would get 314 cubic inches.
Can you bore it out past .060 is what I'd like to know!
If you used a 3.44 stroke 312 crankshaft in that same .060 292 you would get 314 cubic inches.
Can you bore it out past .060 is what I'd like to know!
Senior User
Joined: May 2003
Posts: 285
Likes: 1
Not necesarily, you can always sleeve your block.
But depending on what that costs, you may as well look for another block.
Now here's the tricky part, trying to find a good block that's not worn out like yours!
They're out there, I found my standard bore 312 engine sitting in a wrecked 57 station wagon & only had to go .030 on it.
But depending on what that costs, you may as well look for another block.
Now here's the tricky part, trying to find a good block that's not worn out like yours!
They're out there, I found my standard bore 312 engine sitting in a wrecked 57 station wagon & only had to go .030 on it.
Posting Guru
Joined: Mar 2002
Posts: 2,070
Likes: 2
From: Boise, Idaho
Originally Posted by Walston
I guess that is my real question also, if the engine has been bored to +.060 and is worn, do I need another block?
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Cargo Master
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From: Greenville, SC
Thanks Guys, I am not sure how accurate my mikes are, I'm taking it to the machine shop tomorrow for them to measure them.
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