1973 Engine Code
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by ajkogut
I'm trying to decode my engine number on the RH head.
RH head?
Look for the pad with a stamped # on the pass side just below the cylinder head
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by ajkogut
RH being the right-hand, passenger side cylinder head (or near there)...the place that all the books I have say to look.
Theres a little pad that sticks out just below the cylinder head with a STAMPED number on it
NOT a casting number.
You may have to remove some paint with a wire brush to read the number.
If it is the original engine the number should match the last 8 digits (or so) of the vin # of your vehicle
Team Owner
Joined: May 2005
Posts: 31,497
Likes: 1,313
From: Huntsville AL
Originally Posted by ajkogut
I'm trying to decode my engine number on the RH head. The numbers are: "C6F197390" and "VO617TYZ." Any help? Thanks!
Thread Starter
Instructor
Joined: Apr 2006
Posts: 243
Likes: 0
From: Canton MI
Interesting. Its a 4-speed car and was originally an L82. Is there any way to tell if the heads are original and possibly the block was replaced during the rebuild? I know the engine was rebuilt about 20 years ago and I am planning on either rebuilding it again for more power or putting a crate motor in.
If this is a truck engine, does anyone have a link/know of any more info on it (ie. 4 bolt main? forged crank? etc)? I suppose I could find this out another way but I wasnt planning on cracking into it any time soon.
If this is a truck engine, does anyone have a link/know of any more info on it (ie. 4 bolt main? forged crank? etc)? I suppose I could find this out another way but I wasnt planning on cracking into it any time soon.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
Originally Posted by ajkogut
....Is there any way to tell if the heads are original and possibly the block was replaced during the rebuild?....
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Team Owner
Joined: May 2005
Posts: 31,497
Likes: 1,313
From: Huntsville AL
Originally Posted by ajkogut
Interesting. Its a 4-speed car and was originally an L82. Is there any way to tell if the heads are original and possibly the block was replaced during the rebuild? I know the engine was rebuilt about 20 years ago and I am planning on either rebuilding it again for more power or putting a crate motor in.
If this is a truck engine, does anyone have a link/know of any more info on it (ie. 4 bolt main? forged crank? etc)? I suppose I could find this out another way but I wasnt planning on cracking into it any time soon.
If this is a truck engine, does anyone have a link/know of any more info on it (ie. 4 bolt main? forged crank? etc)? I suppose I could find this out another way but I wasnt planning on cracking into it any time soon.
Melting Slicks
Joined: Apr 2006
Posts: 2,084
Likes: 14
From: Airdrie Alberta
Actually quite a number of 70's 350 4bbl Pickups came with a 4 bolt main block...a lot of circle track guys would scour the wreckers picking them up for a song.
Here are a number of sites for chevy motor decoding- Happy reading!
http://www.yearone.com/updatedsingle...gineinfo6.html
http://www.chevymania.com/ look under the parts ID tab
http://www.nastyz28.com/sbcmenu.html
http://www.edelbrock.com/automotive/bowtie/bowtie.html
Here are a number of sites for chevy motor decoding- Happy reading!
http://www.yearone.com/updatedsingle...gineinfo6.html
http://www.chevymania.com/ look under the parts ID tab
http://www.nastyz28.com/sbcmenu.html
http://www.edelbrock.com/automotive/bowtie/bowtie.html
Race Director
Joined: Apr 1999
Posts: 15,134
Likes: 477
From: NM
Originally Posted by ajkogut
I'm trying to decode my engine number on the RH head. The numbers are: "C6F197390" and "VO617TYZ." Any help? Thanks!
V= Flint engine plant
06 = June
17= Day of month
TYZ = '75 truck engine ( 350 ci, 160hp, 4 barrel)
So the block is not original. Can pull the valve covers and check the head numbers. L82 used 330545 heads.
Thread Starter
Instructor
Joined: Apr 2006
Posts: 243
Likes: 0
From: Canton MI
Looks like original L82 heads. They are 330545 heads that are dated August 24 1973. That said, I am guessing that the engine is close to factory power. I think it has a hotter cam in it, though, any idea that gives to the output.
Being that its not an original motor, I am thinking of boring it .030 over and stroking it to (about) 383...probably 385 with the bore job. Also thinking of some 64cc heads (for around 10.5:1 compression) and a good intake/carb combination. Any predictions on output?
Being that its not an original motor, I am thinking of boring it .030 over and stroking it to (about) 383...probably 385 with the bore job. Also thinking of some 64cc heads (for around 10.5:1 compression) and a good intake/carb combination. Any predictions on output?
Race Director
Joined: Apr 1999
Posts: 15,134
Likes: 477
From: NM
Originally Posted by ajkogut
Being that its not an original motor, I am thinking of boring it .030 over and stroking it to (about) 383...probably 385 with the bore job. Also thinking of some 64cc heads (for around 10.5:1 compression) and a good intake/carb combination.
Thread Starter
Instructor
Joined: Apr 2006
Posts: 243
Likes: 0
From: Canton MI
Crate motors take the fun out of it. If it blows up, I'll build it again. Don't get me wrong, a warranty is a nice thing but, for me, building it up with parts of my choice and hearing it crank is as fun as driving it around.
Plus, working for one of the Big 3 (not the General) doesn't make me want to by anything from GMPP. Good suggestion, though
Plus, working for one of the Big 3 (not the General) doesn't make me want to by anything from GMPP. Good suggestion, though
Administrator
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