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428 bore?

  #1  
Old 04-07-2007, 07:27 PM
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428 bore?

does anyone know as a genral rule how far you can bore a 428 service block? i believe it to be a 74 casting.
 
  #2  
Old 04-07-2007, 07:52 PM
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.040-060 is the normal depending on coreshift and thickness.
 
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Old 04-07-2007, 08:07 PM
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The 428 wasn't available in 1974, better check that block again. Only used 1966-1970 in cars only.
 
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Old 04-07-2007, 08:23 PM
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There are 428 industrial blocks still with 74 date codes and DIF foundry logos. The 428 Russ is building is based on a 74 428 block. Seems a few crops of these late bloomers have surfaced over the last few years. And are indeed 428 blocks. The newest 428 block I've had were nos service castings with a 73 date codes. They were also cast a DIF.

G.
 
  #5  
Old 04-07-2007, 08:56 PM
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Originally Posted by FFR428
There are 428 industrial blocks still with 74 date codes and DIF foundry logos. The 428 Russ is building is based on a 74 428 block. Seems a few crops of these late bloomers have surfaced over the last few years. And are indeed 428 blocks. The newest 428 block I've had were nos service castings with a 73 date codes. They were also cast a DIF.G.
What were those 428 industrial engines used in? They didn't go into passenger cars.
 
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Old 04-07-2007, 09:16 PM
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I believe that all of them were irrigation motors.
 
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Old 04-07-2007, 09:50 PM
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Thank you, I didn't know that.
 
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Old 04-08-2007, 02:19 AM
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A friend of mine put one of them 428 irrigation pump engines in his dent-side pickup back in the 70's. :)

He went on and on about it too. :)

Alvin in AZ
 
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Old 04-08-2007, 09:26 AM
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Yep and most of these 428's used cast CJ pistons, IUB cranks and big bolt C7-B rods. Ray H has been selling these for a few years on the net54 forum. He scores like 12-14 of them at a time. Some are still std bore..most are .030. If I were looking for a nice buildable 428 this is a nice choice if no correct 60's date codes are needed. Or you can drop one in a 71-74 truck and say it's numbers correct. Kidding....but a thought?

G.
 
  #10  
Old 04-08-2007, 09:28 AM
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They Also Have To 3 Web Mains Just Like The Cj's Did
 
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Old 04-08-2007, 09:47 AM
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Originally Posted by 428HIGHBOY
They Also Have To 3 Web Mains Just Like The Cj's Did
Correct!! Forgot to add that....thanks.
 
  #12  
Old 04-08-2007, 09:51 AM
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428HB tell me something. Do the maincaps look like they are nodular iron? Besides the triangles in the top center of the caps are there little bumps on a few of the caps? They are also called warts and ladybugs and indicate nodular iron caps. These came in in the early 70's as std issue FE and wonder if the 428 Industrial's used them?

G.
 
  #13  
Old 04-08-2007, 09:55 AM
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i know they do have the triangles and i was wondering about the meaning of them. i am going to the garage now and i will check for those bumps.
 
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Old 04-08-2007, 10:02 AM
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Not Sure What I Am Looling For But I Dont Think It Has The Bumps.
 
  #15  
Old 04-08-2007, 10:30 AM
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Ok thanks. Ford made both grey iron and nodular iron caps. Sometime in the 70's the MCC cast D2 and later blocks used nodular caps as std issue. I just wondered if the DIF castings had the same. These would be little round bumps beside the triangles on the cap. Thanks for looking!

G.
 
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