460 / C6 Flexplate question.
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From: Utah
Originally Posted by monsterbaby
look right above the starter for the casting number if it is anything but D9TE-## then it's an early block that probably is internal balanced, but if it's the D9TE then it is externally balanced engine. The reason I said it's PROBABLY internal balance on the earlier blocks is you can fit an externally balanced rotating assembly in the earlier blocks but you can't fit the earlier internally balanced cranks into the D9 blocks so if you have that later casting number you will know that you are going to need the externally balanced flexplate with no worries.
I agree with getting the factory flexplate, the costs aren't that much to justify taking a chance with a used one from a wrecking yard, and unless your racing it and need a certified one those will work really good. Even the SFI certified ones aren't that expensive but with the factory unit you know it was designed for your engine. If your racing it like I do then you have to run SFI certied pieces thats another issue but you don't have to worry about it.
I agree with getting the factory flexplate, the costs aren't that much to justify taking a chance with a used one from a wrecking yard, and unless your racing it and need a certified one those will work really good. Even the SFI certified ones aren't that expensive but with the factory unit you know it was designed for your engine. If your racing it like I do then you have to run SFI certied pieces thats another issue but you don't have to worry about it.
I finally got time to pull the engine. The Block numbers are D97E-23. Not sure on the 23 part, hard to read.
Am I too assume this is a 79 460. If so the Balance comes into question again. I know I need to look at the Harmonic Dampener, but I only got the heads off last night. I will be pulling the rest of the block down this weekend.
What I question is, if this block is 79, then it has an external balance. I know the Flex Plate I put in it, had no weight on it. I am wondering if the crank is different, or the balance is in the Harmonic. I need to know how to determine for sure so I get it right before putting it back in. I am going to upload some pictures to my Gallery, the Harmonic Balancer and or Dampener will be in it as well if you can tell by looking at it.
Speaking of pictures, I am uploading some of the Cylinders, you should see what a bad Carb will do to an engine. The reason I am pulling the engine down is I suspect the rings have been washed out because of to much raw fuel getting into the two back cylinders. I have not pulled the pistons yet, but I think after looking at the pictures, you will see what I mean.
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From: iowa
D9TE-AB should be the probable casting number, and yes its a 79 or later block and yes it's an external balance (you can't fit the earlier internal balanced cranks in those blocks without some clearence issues) The flex plate that should be on there will have a counterbalance wieght on it, and the spacer behind the harmonic dampner will have a hatched wieght on it. The dampners are actually the same but both the flexplate and the spacer are different for the external/internal engines.
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What a day of Discovery for my 460.
I think someone was pulling someones leg, or they just flat screwed up. The original story was, the engine only has 2000 miles on it. If you look at the bore, I can beleive it. Still has the marks from the Hone. But I think my Farmer/Shadetree friend put most of it back together.
The timming chain had so much slack in it, the teeth never touched the chain until after the chain started up the other side. The teeth had big groves in them. Why it never jumped a link is beyond me. I got some pictures I will post in my gallery of the timing chain. Real Joke on that one.
Then the topper is the pistons. I think the machine shop screwed up big, big time. The pistons were stock, and the bore .030 over. This would explain why it had so much blow by, and why it ate so much oil.
I am glad I decided to tear it down. I would have been very ticked if I had pulled my camper up the mountain and blow the motor.
I did get the block casting numbers wrong when I read them. They are D9TE-AE. I will have to look them up to see just what I have. All I know right now is it is a 79.
The heads are D3VE-A2A. I think I will grind the EGR Port out, and match the gaskets. Just wondering here, I have read a couple of posts about this port and grinding it off to much and getting into trouble on them. Does anyone have some pictures of heads they have done so I have a visual reference. I hear flush, is good, but I want to be sure. I don't think I will port it any more then that.
I am looking to get some more low end torque out of it. I think I will go with the stock manifold as they say it does good up to 3500, and I really doubt I will be pushing it any harder, I will be porting it to match the gaskets.
To help the low end torque, I will be going with an RV Cam and lifters. Would love to get some rollers with it, but that is out of reach right now.
Back to the Balance, Thanks MonstorBaby, I do appericate it. When I took the Harmonic Dampner off, there was a seperate Balance behind it, I assume I still need to get the flex plate with the balance on it.
I think someone was pulling someones leg, or they just flat screwed up. The original story was, the engine only has 2000 miles on it. If you look at the bore, I can beleive it. Still has the marks from the Hone. But I think my Farmer/Shadetree friend put most of it back together.
The timming chain had so much slack in it, the teeth never touched the chain until after the chain started up the other side. The teeth had big groves in them. Why it never jumped a link is beyond me. I got some pictures I will post in my gallery of the timing chain. Real Joke on that one.
Then the topper is the pistons. I think the machine shop screwed up big, big time. The pistons were stock, and the bore .030 over. This would explain why it had so much blow by, and why it ate so much oil.
I am glad I decided to tear it down. I would have been very ticked if I had pulled my camper up the mountain and blow the motor.
I did get the block casting numbers wrong when I read them. They are D9TE-AE. I will have to look them up to see just what I have. All I know right now is it is a 79.
The heads are D3VE-A2A. I think I will grind the EGR Port out, and match the gaskets. Just wondering here, I have read a couple of posts about this port and grinding it off to much and getting into trouble on them. Does anyone have some pictures of heads they have done so I have a visual reference. I hear flush, is good, but I want to be sure. I don't think I will port it any more then that.
I am looking to get some more low end torque out of it. I think I will go with the stock manifold as they say it does good up to 3500, and I really doubt I will be pushing it any harder, I will be porting it to match the gaskets.
To help the low end torque, I will be going with an RV Cam and lifters. Would love to get some rollers with it, but that is out of reach right now.
Back to the Balance, Thanks MonstorBaby, I do appericate it. When I took the Harmonic Dampner off, there was a seperate Balance behind it, I assume I still need to get the flex plate with the balance on it.
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From: Utah
I almost forgot about this, just in case someone runs into this problem again.
There is a difference to the offset of the Flexplate between the 400 and 460 for a C6 Trans.
I received my new Flexplate form a friend of mine that works at a Ford Dealership, and when I measured the difference, it was just under a 1/4 inch. This was just enough to hold the Torque Converter out so that the notches for the front pump were in the seal.
There is a difference to the offset of the Flexplate between the 400 and 460 for a C6 Trans.
I received my new Flexplate form a friend of mine that works at a Ford Dealership, and when I measured the difference, it was just under a 1/4 inch. This was just enough to hold the Torque Converter out so that the notches for the front pump were in the seal.
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