396 Big Problem
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
396 Big Problem
OK.......I got my motor ready to start tonight and upon starting it, I hear a knocking sound....track it down to the rotating assembly is hitting my pan on the passenger side !! You can see where it is actually knocking the pan out a bit in four places. Anybody ever had this happen to them???? What is the problem, the block or the pan? its a Canton pan. Got it drained of oil and guess the pan has to come BACK OFF for some clearancing???
other than that it sounds nice, no codes or anything,,,,,
jeff
other than that it sounds nice, no codes or anything,,,,,jeff
Le Mans Master
Joined: Feb 2002
Posts: 5,970
Likes: 19
From: San Marcos Texas
Ouch! And here I was just thinking of building a 396 for a friend. Is it really worth the extra trouble for the 396 instead of just building the 383? Its only 13 cubic more inches and alot more clearencing issues...
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
Originally Posted by chriswtx
Ouch! And here I was just thinking of building a 396 for a friend. Is it really worth the extra trouble for the 396 instead of just building the 383? Its only 13 cubic more inches and alot more clearencing issues...
jeff
Melting Slicks
Joined: Sep 2000
Posts: 2,710
Likes: 1
From: Green Bay WI
Better the pan then the block! I had to clearance my Canton for the driver side knock sensor on just a cam/heads swap.
Yank that pan and do your work with a hammer without distorting the mating surfaces and you should be just fine.
I had to clearance my Canton for the driver side knock sensor on just a cam/heads swap.Yank that pan and do your work with a hammer without distorting the mating surfaces and you should be just fine.
Safety Car
Joined: Dec 2002
Posts: 3,655
Likes: 24
From: Charleston SC
Man,
That sucks but it is not a big deal to fix.
I clearanced my pan with a few taps of a hammer and it worked perfect. I went with the stock pan but doubt it would have worked for a 396. All my clearancing wan done on the stand so you are going to have your work cut out unless you plan on pulling the motor. May be easier to pull all the plugs to rotate the motor when checking.
Good luck and you are very close to having one monstor motor besides who ever heard of a 383 chevy? Now you can say you have a 396 and no one will think you are talking about a Mopar
That sucks but it is not a big deal to fix.
I clearanced my pan with a few taps of a hammer and it worked perfect. I went with the stock pan but doubt it would have worked for a 396. All my clearancing wan done on the stand so you are going to have your work cut out unless you plan on pulling the motor. May be easier to pull all the plugs to rotate the motor when checking.
Good luck and you are very close to having one monstor motor besides who ever heard of a 383 chevy? Now you can say you have a 396 and no one will think you are talking about a Mopar
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
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From: Ft. Worth Texas
St. Jude Donor '11
Originally Posted by FD2BLK
Man,
That sucks but it is not a big deal to fix.
I clearanced my pan with a few taps of a hammer and it worked perfect. I went with the stock pan but doubt it would have worked for a 396. All my clearancing wan done on the stand so you are going to have your work cut out unless you plan on pulling the motor. May be easier to pull all the plugs to rotate the motor when checking.
Good luck and you are very close to having one monstor motor besides who ever heard of a 383 chevy? Now you can say you have a 396 and no one will think you are talking about a Mopar
That sucks but it is not a big deal to fix.
I clearanced my pan with a few taps of a hammer and it worked perfect. I went with the stock pan but doubt it would have worked for a 396. All my clearancing wan done on the stand so you are going to have your work cut out unless you plan on pulling the motor. May be easier to pull all the plugs to rotate the motor when checking.
Good luck and you are very close to having one monstor motor besides who ever heard of a 383 chevy? Now you can say you have a 396 and no one will think you are talking about a Mopar
jeff
Thread Starter
Drifting
Joined: Nov 2000
Posts: 1,276
Likes: 0
From: Ft. Worth Texas
St. Jude Donor '11
Originally Posted by FD2BLK
My guess is once you get the pan off it will not be hard to see where it is hitting.
jeff
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Drifting
Joined: Aug 2002
Posts: 1,475
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From: Speedo Indiana
Originally Posted by ztrips
Did you have the pan torqued down or just sitting there? You'd be suprised what a 1/10th can do to clearances...
Drifting
Joined: May 2004
Posts: 1,280
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From: Gretna NE
St. Jude Donor '09
I actually had the same thing happen on my 383. If i remember right the Canton pan is a pain in the a$$ to get out while in the car. I believe you'll need to take the bolts out of the motor mounts and try lifting the motor just a little. I just knocked the places out with a hammer and all was good,
Dan
Dan
Race Director
Joined: Nov 2004
Posts: 14,149
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From: Central Il
Originally Posted by TONYDEE64
Call me crazy.. but I'd probbly just leave it as is.. pretty soon the hammering will go away...if that is indeed your problem. Continue to monitor your oil for scrapnel...
Tony D, I hope you were kidding.
Now, I would not wait for shrapnel to end up in my oil. Clearance the pan or do whatever you have to do to stay away from any metal to metal contact. Cheap insurance from scraping metal off your crankshaft or wearing a hole into the side of your oil pan.
Drifting
Joined: Aug 2002
Posts: 1,475
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From: Speedo Indiana
Originally Posted by ZumZum
Your crazy!!! Was that good enough?
Tony D, I hope you were kidding.
Now, I would not wait for shrapnel to end up in my oil. Clearance the pan or do whatever you have to do to stay away from any metal to metal contact. Cheap insurance from scraping metal off your crankshaft or wearing a hole into the side of your oil pan.
Tony D, I hope you were kidding.
Now, I would not wait for shrapnel to end up in my oil. Clearance the pan or do whatever you have to do to stay away from any metal to metal contact. Cheap insurance from scraping metal off your crankshaft or wearing a hole into the side of your oil pan.
Team Owner
Joined: Dec 2000
Posts: 27,897
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From: I have no tolerence for liberals and fools, but sometimes i repeat myself
CI 3-5-7-8-9 Veteran
St. Jude Donor '08
Originally Posted by ddr698
I actually had the same thing happen on my 383. If i remember right the Canton pan is a pain in the a$$ to get out while in the car. I believe you'll need to take the bolts out of the motor mounts and try lifting the motor just a little. I just knocked the places out with a hammer and all was good,
Dan
Dan
. Thanks for the tip!
Melting Slicks
Joined: Jul 1999
Posts: 2,875
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From: Olive Branch (Memphis suburb) MS
Cruise-In II Veteran
Originally Posted by Nathan Plemons
That's strange. A friend of mine ran a canton pan on his 396 LT1 and didn't have any such problems. He was running a calies crank and I'm thinking oliver rods but I can't remeber for sure.
Le Mans Master
Joined: Aug 1999
Posts: 7,337
Likes: 137
From: WilkesBarre PA
I had no problem with my Canton pan and 396. I used a Callies crank and Lunatti Pro Mod rods. I did have to do the normal clearencing to the pan rails on the block though.
You can get the pan on and off in the car but I think I had to lift the motor and twist the pan around off the pickup. (and curse alot
)
You can get the pan on and off in the car but I think I had to lift the motor and twist the pan around off the pickup. (and curse alot
)