Block ID
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Laughing Gas
Joined: Jan 2005
Posts: 992
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Block ID
can someone help me find my block cast ID?
i have taken the motor apart. (measure the bore and stroke to be a 390)
i have cleaned this block all over and did not find a casting ID. Where all can i look for these numbers or clues to what year this block is
i have taken the motor apart. (measure the bore and stroke to be a 390)
i have cleaned this block all over and did not find a casting ID. Where all can i look for these numbers or clues to what year this block is
Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
Likes: 2
From: CT
Does the block have vertical ribs on both sides? If it does it may be a service replacement block and will have no casting number. I've also seen non ribbed blocks with no casting numbers also. Otherwise it should be on the right side of the block. Check the date code also. G.
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Laughing Gas
Joined: Jan 2005
Posts: 992
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i have got the date codes and all that. It has no ribs on the side. I have found some other number on the block.
the mold number in 36
on the back i have the number 33
in the block it has 54 where the lofters are
58 on front above the 352 number
the mold number in 36
on the back i have the number 33
in the block it has 54 where the lofters are
58 on front above the 352 number
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Laughing Gas
Joined: Jan 2005
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i checked my 352 in my 56 f-100 to see where the number was on that. It was right there where i thought it was at raised on kind of a rectangle. Then i went over to my 390 and had the rectangle but no stamp..... then i stop and was like hmmmmm????
Postmaster
Joined: Nov 2002
Posts: 3,447
Likes: 1
From: Littleton, CO
If there are 2 engine mount bolt holes, it's a pre-65 block, if there are 4 mount bolt holes, it's later. Can I ask what the significance would be for you to determine the year of the block?
--Mike
--Mike
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Laughing Gas
Joined: Jan 2005
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Needsmorecoffee.
Joined: Oct 2004
Posts: 3,624
Likes: 2
From: CT
Well the date code tells you the year/month/date of the casting. With no casting number that's about the most you can tell. The heads, crank, rods etc.. will all have there respective numbers and should be around the same timeframe. The timing cover will have a casting number and a circle of dots with a number inside. That's the date code for the cover. Even down to the rocker assy's you can tell what everything is for the most part by the numbers. I'd use this as a gauge to support if the engine is all original to the car. As I mentioned it's quite common to find production blocks without casting numbers. Maybe the "number guy" at the foundry was out sick that day LOL. Just kidding....What heads, crank and rods do you have??? G.
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