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...I'm by far an expert in the matter or methods of diagnosing engine issues.. But, that definitely has that "hollow" sound that you mention which sould not be indicative of anything in the valvetrain.. I think you should just pop the oil pan off and see what's going on..

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alan, i was thinking that it might be something in the oil pan, but i dont know what kind of oil pan you are using! if its a stock oil pan then its going to rub, the stroke on a 400 is different then a 350

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I would chk the flex plate for cracks first as that is a lot simpler than pulling the pan and finding nothing wrong there and then find it was the flex plate
ron

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Eaxust looks awesome! It's hard to tell from the video bu, that does not sound like a loose rod or main. That does sound like something is hitting something low. Sorry u haveing this trouble. But I think it's going to be easy to fix once u find the noise. Good luck man.

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Alan if you shoot me a PM with a good mailing address I will send you an old sthescope. People rotate thru Military hospitals every 6 months, new in-old out and providers tend to leave things like these behind so I have quite a few of them.
I use it every once in a while with a long metal rod just to "listen in" on my engines.

If you would like I will shoot one off to ya.

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Don't ignore that noise. This could happen. :haha:

https://fbcdn-sphotos-a.akamaihd.net...91517760_n.jpg

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Alan , I diagnose that stuff all the time and a 3 ft piece of hose heald to the ear and touching the areas that you think the sound is coming from will tell you real quick where it is coming from .. also a handy way to find loose rockers ... but if it is hitting the pan or the baffle you should be able feel it with your hand on the pan... good luck my friend ,I have been through that before...

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Just out of curiosity Dennis, what exactly happend there. Obviously it blew out the bottom of the block (like WOW) but what caused that much damage ...... ???

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Probably revved over 10,000 rpms....these big, expensive drag engines take a lot, but most don't like the over rev....and they tend to scatter pretty big when they blow under power....

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I have no idea. I stoled the picture from FACE BOOK. :lol:
I'm sure it has to a race cars engine with gobs of HP. :uhmk:

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That pic reminds me of this vid. This has got to be the biggest engine blow ever.

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The rods were still good. It had too much boost. :haha:

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sometimes there is perhaps a little to much fuel and it doesn't just all jive at the same time, boom
ron

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Those engines are like a Controlled BOMB!! :nx:

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Most of the time something breaks in the valvetrain and an intake valve gets stuck open, fills the cylinder full of fuel and bang. Could also have been too much pressure. Alan is about 7600 short of the horsepower the top fuelers are making but should still check it out.

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I wish it was that easy to pop the oil pan off. ;) I have to raise the engine up at least 2 inches.

Yeah I clearanced the oil pan for that. At least I thought I had it good enough, but don't remeber rechecking it after I bolted it down. :dohh:

I looked at it and didn't see anything that looked like a crack.

Thanks for the comments.

thanks!! I might take you up on that. ;)

I'll give that a shot, never tried a hose before. Thanks

Haven't been able to fool with it. Most of the reason is no time, but some of it is I don't want to. Kind of disheartening. I'll power thru it.

has anyone use this type of oil pan gasket? My block falls into the year range for this gasket, but I read tonight it is for a thin front gasket, and I believe I have a thick one I'm not really sure. I thought it might be easier to deal with under the trruck.

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I had a stock pan on my 383 and did the same thing, my friend just finished the motor in his 84 put a stock pan on it and the same noise. I am sure you will leave no stone unturned to find both issues power and noise and then burn up some asphalt

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:thumbs:

OK, the pan gasket above had the thin front gasket and I didn't use it. i went with the standard cork.

Dropped the pan last night and found where it was rubbing. Massaged it a little and with Shannon's help we got the pan installed tonight.

The rubbed place is the shinny spot between the 2 reliefs.

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Hey Alan,

Glad to see your C.S.I. skills solved the mystery, but I never doubted you for a second.

Looking forward to the next tire smoke'n video.

You are an inspiration....!

Danny

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I put a small block 400 pan on my friends motor and fixed the problem just ordered one from Summit. Glad you found the problem you have to be breathing a little easier and sleeping better

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:thumbs:

Jimmy, I'm a little slow sometimes. ;) I actually thought of that when I took the pan off and checked Jegs for a 400 pan and couldn't find one. I should have thought about it when I ordered this pan 2 years ago. Anyway problem is fixed. Thanks for the input.

Got everything buttoned up this morning and was jonesin' to drive around town. I made a 7 miles round trip. Stopped at the gas station to try the pump to see if I got any splash back. Tried full blast and the pump justed stopped. It filled pretty good when I throttled it just below full blast. Then to church for work day.

It was funny watching people as I went by. Alot of pointing and lookin'.

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Very good looking truck Alan!! I bet the feeling is great driving it finally!! :metal: :metal: :metal:

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gotta love that feeling! :metal:

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It's great to see your truck on the street. I've been following since I found this site and your build has given me inspiration more than once to keep going. I knew when I started mine that it would be a long process and seeing your accomplishments helps my motivation.

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Same here PDXHall. I've been reading this thread since I joined and it's kind of a "you can do it!" to see him behind the wheel and toodling around town after all the hard work.

Congrats Alan!

When do you want me to drop off mine? Don't want you getting out of practice now :D

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congradulations alan, extremely happy for you, cant wait to see it in person.

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Lookin great Alan. Glad your using good gas. :metal:
Now everywhere you go you'll be answering questions about your truck. You won't be able to even go to the grocery store without someone stopping you to talk. :blah:

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Labor of love that you will be telling people about for many years to come. Congrats
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Alan, the truck looks great (my favorite color). I've enjoyed your build thread over the last couple of years. Hope you get lots of windshield time!

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Yes, it is Scott. The smile gets bigger every time. BTW, thanks

:thumbs:

Thanks for bearing with me during this process. This build will be around for a long time. I say that because, I still have a lot to do.

:lol: Thanks for the comments

Thanks, man. i can't wait to see yours as well.

I answer a bunch of questions today. ;) It won't be going to a grocery store unless there is a show in the parking lot. :lol:

Thanks, and I hope so. Just wish I went with an LS. Your ride will be and already is a conversational piece.

Me TOO!! ;)

I forgot to mention this.

At the muffler shop I had an old geezer tell me I had my bumpers on upside down. I said no and he disagreed saying he just sold a 66 that was all original and his bumpers were right. I just said ok and went on.

Still insearch of a steering wheel. The 15" 59 Impala whell i wanted is $360. i can't do that right now. I found others styles cheaper, but undecided on what would look good for $150, suggestions..........

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Really cool Alan, Glad to see you have it on the road!!! I'm about to get mine on the road too, bolt the seats down, final timing, and alignment and "Hear.. We.. Go!"

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Hey Alan, Your truck looks so good sitting at the pump, You have done an excellant job on it. Will you be coming or possibly driving your truck to the Charlotte auto fair april 24th weekend??? Me and flips are going to meet up there on saturday. I would LOVE to see your truck in person!!

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Woo hoo back on the road and at the gas station, congrats AC !

-W

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That's a really good stance , looks good with the tinted glass, can't wait see it with the hood on it.Bet that was a fun 7 mile ride.

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:metal:Running Trucks:metal:

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Way to go Alan!! Congrats on getting the knock problem fixed, and getting her on the road!

We are all going to be expecting a burnout video here soon!! Come on...you know you want to! LOL

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Wow I had to go back and catch up on this and that knock sounded nasty! Glad it was a simple fix or sum what simple. Trucks looking good Alan..
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IThanks, I looked for your build thread, I thought you had one.

I won't make it this year.

Thanks Scott!

Thanks, and it was pretty enjoyable.

:thumbs:

Soon, my son. ;) Patience grasshoppa. :lol:

Really discouraging at first, but I got over it and it was a pretty simple fix.

My pastor informed me that he will be using me in his sermon today. I didn't know what to expect. I went to the early service to hear it and filmed a portion of it at the 11:00 service. It was tied into the last thing Jesus said on the cross. "It is finished". I wish I could say that for my truck right now and some day I will. Sorry for the low audio, but hope you get the jest of it. It was a longer video. i had to cut it short because I covered the mic on my phone and couldn't hear anything. The last thing he says in the video is one day he can step back and say "It is finished".

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that is crazy funny but true. the only problem we all have is----- IT'S NEVER FINISHED

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Very cool Alan...