Engine ID please
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
Engine ID please
I have a replacement short block with a stamp pad CE3A8463 and casting number 3970010 (350ci). This is a dated replacement block in my 65 coupe. Heads are 3991492 15 h190 lt side and w153 right side doubble hump. Has a mechanical cam, solid lifters, guide plates, rockers with approximately .016 lash (cold). I know the intake, carb, oil pan are from the original 327 block 365 SHP motor that the car was originally. I am trying to determine if this would be a 350/350 motor? 350/365? Or ??? Any help would be appreciated!
Thanks
Thanks
Last edited by Kensmith; Oct 5, 2008 at 09:04 PM.
Le Mans Master
Joined: Oct 2005
Posts: 9,429
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From: Macon, GA
It's pretty much going to be impossible to determine exactly what you have. Are you sure the fourth digit is an "A"? Usually, the numbers that start after the CE and the 3rd digit (which designates the year) is a serial number for the engine and ranged from 20000 to 79999.
Le Mans Master
Joined: Oct 2005
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From: Macon, GA
Drifting
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From: MS
No way to know without tearing it apart.
If the Vette that this engine originally went into had the hi-perf 350 (L46, LT1, L82, etc) then this engine would be the same.
If the Vette had the base engine, then that is what they would have put in it, nothing more nothing less.
If the Vette that this engine originally went into had the hi-perf 350 (L46, LT1, L82, etc) then this engine would be the same.
If the Vette had the base engine, then that is what they would have put in it, nothing more nothing less.
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
No way to know without tearing it apart.
If the Vette that this engine originally went into had the hi-perf 350 (L46, LT1, L82, etc) then this engine would be the same.
If the Vette had the base engine, then that is what they would have put in it, nothing more nothing less.
If the Vette that this engine originally went into had the hi-perf 350 (L46, LT1, L82, etc) then this engine would be the same.
If the Vette had the base engine, then that is what they would have put in it, nothing more nothing less.
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Race Director
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This engine was built at least 8 years later than your car. It is not a direct warranty replacement for this particular car, if that's your assumption.
Who knows what it was originally built for and when it actually found it's way into your car. There is no way you can expect anyone to have a clue what's inside.
Who knows what it was originally built for and when it actually found it's way into your car. There is no way you can expect anyone to have a clue what's inside.
Le Mans Master
Joined: Mar 2004
Posts: 7,450
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From: Little Rock AR
The engine was supplied through the parts counter one way or another back in '73. There is no way to tell anything about it without tearing more parts off. It might be a large journal 327 built for service. It might be a base 350 engine originaly supplied to a station wagon under warranty back in '73 that made it into the Vette at some later date. We do know it was not a warranty replacement for this car so it could be anything. A lot of things cound have happened to it over the last 35 years so it is anyones guess what it is at this point without opening it up.
You could mount a dial indicator on the pushrod and check the cam lift/duration. That would tell you something about it. Quick and easy if you have the tools. The base "929" cam is lower lift than a "962" 350/350 cam, and the "182" cam has more duration @ .050" than the "962".
I will tell you a 350/350 has a very slightly noticeable idle. Not what I would quite describe as a "lope". I doubt anyone would notice unless you were side by side with a base engine and could hear them individualy.
-Mark.
You could mount a dial indicator on the pushrod and check the cam lift/duration. That would tell you something about it. Quick and easy if you have the tools. The base "929" cam is lower lift than a "962" 350/350 cam, and the "182" cam has more duration @ .050" than the "962".
I will tell you a 350/350 has a very slightly noticeable idle. Not what I would quite describe as a "lope". I doubt anyone would notice unless you were side by side with a base engine and could hear them individualy.
-Mark.
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
The engine was supplied through the parts counter one way or another back in '73. There is no way to tell anything about it without tearing more parts off. It might be a large journal 327 built for service. It might be a base 350 engine originaly supplied to a station wagon under warranty back in '73 that made it into the Vette at some later date. We do know it was not a warranty replacement for this car so it could be anything. A lot of things cound have happened to it over the last 35 years so it is anyones guess what it is at this point without opening it up.
You could mount a dial indicator on the pushrod and check the cam lift/duration. That would tell you something about it. Quick and easy if you have the tools. The base "929" cam is lower lift than a "962" 350/350 cam, and the "182" cam has more duration @ .050" than the "962".
I will tell you a 350/350 has a very slightly noticeable idle. Not what I would quite describe as a "lope". I doubt anyone would notice unless you were side by side with a base engine and could hear them individualy.
-Mark.
You could mount a dial indicator on the pushrod and check the cam lift/duration. That would tell you something about it. Quick and easy if you have the tools. The base "929" cam is lower lift than a "962" 350/350 cam, and the "182" cam has more duration @ .050" than the "962".
I will tell you a 350/350 has a very slightly noticeable idle. Not what I would quite describe as a "lope". I doubt anyone would notice unless you were side by side with a base engine and could hear them individualy.
-Mark.
Mark,
Thanks for the information. The cam lope is very noticable and people think it is a 327/350hp motor. The casting numbers on the block are for a 350ci motor. The heads are either the over counter 64cc or LT1 per the casting number. I will check the cam lift. I would be very suprised if the engine was anything less than a 350/350 as this was an original 327/365 car documented. Still had original SHP parts. Correct Holley, aluminum intake, 6 qt oil pan, correct tach, 80lb oil pressure guage, 4.11 rear end, muncie M21, etc.
Thanks,
Ken
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From: Downtown Annapolis, MD. The Future is where we all have to live. Let's not screw it up.
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Poke around on this website under various years. It may be some help. 3970010 is a 350, but I guess you already know that. Good luck.
http://www.rowleycorvette.com/vettestats.html
http://www.rowleycorvette.com/vettestats.html
Last edited by xCCTer; Aug 21, 2007 at 10:34 AM.
Le Mans Master
Joined: May 2006
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From: indy indiana
Ken, using the block casting numbers alone, this is what that block came in..
350..1969 to 1980, 2 or 4 bolt main.
327..1969, 2 bolt, truck industrail
302..1969,4 bolt, Z-28 camaro.
Your saying its a 73 block..ok, its a 2 or 4 bolt 350.There is no way of telling what it came out of by block casting numbers alone. Thats what the engine pad is for.
My guess is that they bought a 350 short block, cammed it up,put the old "good stuff" back on it and had a good time driving a fast vette.
You have got to take off the valve covers and post the numbers to tell where they came from and what they are.
350..1969 to 1980, 2 or 4 bolt main.
327..1969, 2 bolt, truck industrail
302..1969,4 bolt, Z-28 camaro.
Your saying its a 73 block..ok, its a 2 or 4 bolt 350.There is no way of telling what it came out of by block casting numbers alone. Thats what the engine pad is for.
My guess is that they bought a 350 short block, cammed it up,put the old "good stuff" back on it and had a good time driving a fast vette.
You have got to take off the valve covers and post the numbers to tell where they came from and what they are.
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
Ken, using the block casting numbers alone, this is what that block came in..
350..1969 to 1980, 2 or 4 bolt main.
327..1969, 2 bolt, truck industrail
302..1969,4 bolt, Z-28 camaro.
Your saying its a 73 block..ok, its a 2 or 4 bolt 350.There is no way of telling what it came out of by block casting numbers alone. Thats what the engine pad is for.
My guess is that they bought a 350 short block, cammed it up,put the old "good stuff" back on it and had a good time driving a fast vette.
You have got to take off the valve covers and post the numbers to tell where they came from and what they are.
350..1969 to 1980, 2 or 4 bolt main.
327..1969, 2 bolt, truck industrail
302..1969,4 bolt, Z-28 camaro.
Your saying its a 73 block..ok, its a 2 or 4 bolt 350.There is no way of telling what it came out of by block casting numbers alone. Thats what the engine pad is for.
My guess is that they bought a 350 short block, cammed it up,put the old "good stuff" back on it and had a good time driving a fast vette.
You have got to take off the valve covers and post the numbers to tell where they came from and what they are.
Thanks,
Ken
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
Ken, using the block casting numbers alone, this is what that block came in..
350..1969 to 1980, 2 or 4 bolt main.
327..1969, 2 bolt, truck industrail
302..1969,4 bolt, Z-28 camaro.
Your saying its a 73 block..ok, its a 2 or 4 bolt 350.There is no way of telling what it came out of by block casting numbers alone. Thats what the engine pad is for.
My guess is that they bought a 350 short block, cammed it up,put the old "good stuff" back on it and had a good time driving a fast vette.
You have got to take off the valve covers and post the numbers to tell where they came from and what they are.
350..1969 to 1980, 2 or 4 bolt main.
327..1969, 2 bolt, truck industrail
302..1969,4 bolt, Z-28 camaro.
Your saying its a 73 block..ok, its a 2 or 4 bolt 350.There is no way of telling what it came out of by block casting numbers alone. Thats what the engine pad is for.
My guess is that they bought a 350 short block, cammed it up,put the old "good stuff" back on it and had a good time driving a fast vette.
You have got to take off the valve covers and post the numbers to tell where they came from and what they are.
Heads: left castings numbers GM51, 399 92, 15, h190. Right casting numbers: GM53, 3991492, 15, w153. Both have factory style rockers and springs with umbrellas. Also guide plates. Lash cold is .015 inch. I thought these were hydraulic but guess wrong. With sidepipes, couldn't hear any clattering. Block is 3970010, 1 8 3, pad: CE3A8463 1973 350CI replacement block. Any good guesses on type of heads and possible cam? Has a lopy idle. Heads LT-1 ???
Last edited by Kensmith; Oct 6, 2007 at 07:39 PM.
Thread Starter
Le Mans Master
Joined: Mar 2005
Posts: 7,631
Likes: 11
From: Rocklin California
I can't believe none of you C3 guys can't figure this one out? Gotta have some kind of idea what this motor is? My guess is a 350/350 but if it's a solid lifter cam, ???? I thought the 350/350 had a hydraulic cam. 