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#1
07-26-2004, 05:30 PM
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Just got to take my 428 apart and this is what I found in the #5 & #7 cyl. Will 060 fix this?
Tom |
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#2
07-26-2004, 05:30 PM
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Just got to take my 428 apart and this is what I found in the #5 & #7 cyl. Will 060 fix this?
Tom |
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#3
07-26-2004, 06:30 PM
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Sorry, had to rezize the picture.
Tom |
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#4
07-26-2004, 06:34 PM
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#5 bottom
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#5
07-26-2004, 06:38 PM
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#7 Bottom and top
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#6
07-26-2004, 06:40 PM
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Sorry for the confusion to those who opened this first.
The pits do not seem to be to deep but am wondering if the block is going to be scrap or not. Plan on haing it tested but not until Oct. Coated it all in axle grease to stop it until then. Any reply would be appreciated. Tom |
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#7
07-26-2004, 06:51 PM
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Its hard to say, if its a standard bore the better your chances. I have a 428 block with very bad pitting, If you take it to your machine shop have them bore the worst cylinder first, they shouldnt charge much. If its just one cylinder you could always have it sleeved.
__________________
72firebird 3800# 496 316cfm eheads, 11.1:1 compression, custom solid roller, victor 4500 intake port matched, 1050 dominator, continental converter flash 4400 stall. 3.73. 2 inch headers with 3.5 with x to mufflers reduced to 3 inch full exhaust. mallory 250 fuel pump, cal tracs with split monos ..Pump gas 91 octane. |
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#8
07-26-2004, 06:54 PM
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So if the ultimate goal is 060 over take and have 050 over done and see what happens?
Tom |
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#9
07-26-2004, 06:59 PM
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might as well have them go .060 to see if it will clean up unless you plan to have custom made pistons in .050
__________________
72firebird 3800# 496 316cfm eheads, 11.1:1 compression, custom solid roller, victor 4500 intake port matched, 1050 dominator, continental converter flash 4400 stall. 3.73. 2 inch headers with 3.5 with x to mufflers reduced to 3 inch full exhaust. mallory 250 fuel pump, cal tracs with split monos ..Pump gas 91 octane. |
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#10
07-26-2004, 07:29 PM
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Wasn't planning to have custom pistons made. There is a school of thought around here in VA that you should not bore an engine out to 060 over. So I was planning to ship it out to get done. All in all it is just not in the plans to lay out that kind of money. Just dropped money on a rearend conversion and have to wait till next year for the motor. Will the way I have it stored keep it ok till then?
Tom |
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#11
07-26-2004, 08:24 PM
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The block I'm using in my current engine started out worse than the pics you've got here. I bored my 428 block 0.065 over and it was fine.
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69GPModJ Moderation in everything--including moderation. WC Fields. |
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#12
07-26-2004, 09:06 PM
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My 455 looked worse than your pics. I had it punched .060 and it came out great. Unless I'm mistaken, the 428 is fairly rare. I even consider sleeving as the previous post recommended.
Good luck, let us know the status.
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"In my house I'm the boss, my wife is just the decision maker." |
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#13
07-26-2004, 09:18 PM
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0.060 over is quite a bit. Depending whether your block is stock or not, the machine shop may even have to make two passes to take that much out of the cylinders. They did on mine, though it was 0.065 over.
__________________
69GPModJ Moderation in everything--including moderation. WC Fields. |
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#14
07-27-2004, 03:52 AM
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Everbody thanks for the replies. It gives me piece of mind (hopefully the one I lost in the 70's). I knew some one here had this type of situation and would be able to tell if it was junk or not.
I will not have the work done until next year cause the 400 I have now is in the car running. Tom |
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#15
07-27-2004, 06:52 AM
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You don;t think .030 will fix it?
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Badder than old King Kong And meaner than a junkyard dog -Jim Croce |
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#16
07-27-2004, 07:41 AM
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The goal for this engine is 060 over. So that was what I was going with. Seeing the pitts in the Cyl walls disturbed me. All the other ones are smooth as glass. Crank is in great shape without any ridges on the mains and rod journals.
Tom |
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#17
07-30-2004, 07:22 PM
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They don't look that bad in the pics.If your not going to bore it for awhile give it a honing and a good coating of WD40 or the like to help stop it from getting any worse.
Ken |
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