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Author Topic:   questions about 350 X block
new8
Member
posted February 10, 2002 03:06 PM
can anyone tell me what a X block is in a 350 chev? my crank, rods, heads,and intake also have X stamped into them so i wanted to know was they any good or not?
thanks in advance.


BK19
Member
posted February 10, 2002 04:45 PM
dod you know the casting number on this block


new8
Member
posted February 10, 2002 05:17 PM
quote:
Originally posted by BK19:
dod you know the casting number on this block

the number on the block is 14010207
intake is 14014434
heads is 333882
thanks.



BK19
Member
posted February 10, 2002 09:01 PM
i dont know anything about the x-block but it is made 80 to 85 and could be 2 or 4 bolt mains


99bomb
Member
posted February 13, 2002 07:14 AM
The x rods are the strongest stock rods that are still in salvage yards, If the block has a 010 behind the timing gear, or on the back of the block its a high HP 4 bolt main.Not sure about the heads in your class.
The 010 block is a great start to a strong motor.


BK19
Member
posted February 13, 2002 07:21 AM
i have had alot of 010 blocks that were only 2 bolt mains also


racer17j
Member
posted February 14, 2002 12:55 AM
if i rember right i think every 350 i have =ever had where 010 don't know if that anything special or not but if you run a low compression rule like we do (9-1) those are some good heads


DirtDobber
Member
posted February 21, 2002 03:37 PM
The X was for Xtra duty. Chevy used the X to identify the usage in such performance vehicles. If you have a matching set take care of it and it will take care of you. As for the numbers behind your timing cover - they were to identify the Tin / Nickle content of the block. The first number was the tin and the second, if one, was the nickle. This is for the blocks 80's and back - not too hip on the newer stuff yet. So if there are two numbers under the timing cover ten over twenty that is 10% tin and 20% nickle and one of the better blocks to have. More nickle means a cleaner finish for your rings to settle into. Most only have one number 10. equal amounts of each and the rest is floor sweeping and old shreaded imports! Hehe!
Good Luck!


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