Cylinder head ID
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Cylinder head ID
Hi All
Im a but confused
I just checked the casting numbers on my heads from my 73 L-48 and they came up as 1974 350/400
The car was built in Feburary 1973, can this be correct?
333882.....74-80...350/400......76cc chambers
Thanks
Bob
Im a but confused
I just checked the casting numbers on my heads from my 73 L-48 and they came up as 1974 350/400
The car was built in Feburary 1973, can this be correct?
333882.....74-80...350/400......76cc chambers
Thanks
Bob
Le Mans Master
Joined: Mar 2004
Posts: 7,501
Likes: 1,508
From: Little Rock AR
Might be depending on who you want to believe. The Black Book says those are 74 year model heads but my other resto guide says they were used in 73 and later. I find it interesting that they call for either "993" or "882" in '73. The "993" heads were somewhat smaller chambers so that makes me pause.
What are the date codes on then heads and block. If the head dates match closely with the block casting dates I would say they were original. If the heads are later than the assy date on the block then they are obviously not original. Look for the date code next to the casting number on the heads.
-Mark.
What are the date codes on then heads and block. If the head dates match closely with the block casting dates I would say they were original. If the heads are later than the assy date on the block then they are obviously not original. Look for the date code next to the casting number on the heads.
-Mark.
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by stingr69
What are the date codes on then heads and block. If the head dates match closely with the block casting dates I would say they were original. If the heads are later than the assy date on the block then they are obviously not original. Look for the date code next to the casting number on the heads.
-Mark.
The other #s I have from the heads are J233 and 271 (could be 270) hard to read
the block castings reads 3970010 and A333
I know the block is the original as the stamped # coencides with the VIN
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Originally Posted by Bob Onit
Thanks Mark
The other #s I have from the heads are J233 and 271 (could be 270) hard to read
the block castings reads 3970010 and A333
I know the block is the original as the stamped # coencides with the VIN
The other #s I have from the heads are J233 and 271 (could be 270) hard to read
the block castings reads 3970010 and A333
I know the block is the original as the stamped # coencides with the VIN
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by 63mako
The Heads date code translates to Sept 23 1973. Could be service replacement. The engine casting date code must be A233 or A273. The letter A is Jan The next 2 numbers are the day and the last # is the year. They don't use the letter I. Some years use the last 2 #s for year.James B on the forum has a set of 73 correct heads for your car for $200 plus shipping, rebuilt if you need a correct set! They are NICE! He bought them from me and didn't use them.
I suppose I could have read the block code wrong... the A333 may very well be 233 as the stamped # does match the vin
As far as the heads go... I will be removing them soon either to have them milled or possibly replacing them with a smaller cc set
Thanks very much for your help!
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Originally Posted by Bob Onit
Thanks 63mako
I suppose I could have read the block code wrong... the A333 may very well be 233 as the stamped # does match the vin
As far as the heads go... I will be removing them soon either to have them milled or possibly replacing them with a smaller cc set
Thanks very much for your help!
I suppose I could have read the block code wrong... the A333 may very well be 233 as the stamped # does match the vin
As far as the heads go... I will be removing them soon either to have them milled or possibly replacing them with a smaller cc set
Thanks very much for your help!
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Better heads and a larger cam will wake that 73 right up, look into the top end packages out there for a match set of parts, Trick Flow and Edelbrock make good heads so their packages look nice
Thread Starter
Melting Slicks
Joined: Mar 2006
Posts: 3,342
Likes: 7
From: Connecticut
Originally Posted by Fevre
Better heads and a larger cam will wake that 73 right up, look into the top end packages out there for a match set of parts, Trick Flow and Edelbrock make good heads so their packages look nice
.
Did you modify the top end on your car?
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