3970010 sbc id
Thread Starter
Instructor
Joined: Apr 2005
Posts: 102
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From: Calmar Iowa
3970010 sbc id
I found a block and cant fint proper info on it.
3970010 on back of block. Pad in front of passenger side head
has B&B on way left side and 1022 on far right side.
Front and rear mains are 2 bolt, rest are 4 bolt.
By oil filter it has 010 then 020 then 167, under timing chain cover
is 010 then 509 then 020 with other #s scatered, they are
512, 532 and G12. Just the block, but still wondering.
Thanks
3970010 on back of block. Pad in front of passenger side head
has B&B on way left side and 1022 on far right side.
Front and rear mains are 2 bolt, rest are 4 bolt.
By oil filter it has 010 then 020 then 167, under timing chain cover
is 010 then 509 then 020 with other #s scatered, they are
512, 532 and G12. Just the block, but still wondering.
Thanks
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
With this:
B&B on way left side and 1022 on far right side.
on the pad it will be impossible to say for sure. Looks like a rebuilder's stamp. If G12 was found in the usual position for date codes, this makes it a Saginaw MI cast block on July 1 172.
B&B on way left side and 1022 on far right side.
on the pad it will be impossible to say for sure. Looks like a rebuilder's stamp. If G12 was found in the usual position for date codes, this makes it a Saginaw MI cast block on July 1 172.
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
Just a four bolt 350. Tons of 010 blocks running around. The 509 is said to be a high nickle content thus making a stronger block.
The only thing I can say with regard to the 509 is when I bore the cylinders on a 509 block the appear a higher sheen and a different sound than the other blocks.
The Mexican small block fords seem the same way.
I know I can sell the 509s for more money than the others. So if it isn't true there are a lot of folks that believe it.
The only thing I can say with regard to the 509 is when I bore the cylinders on a 509 block the appear a higher sheen and a different sound than the other blocks.
The Mexican small block fords seem the same way.
I know I can sell the 509s for more money than the others. So if it isn't true there are a lot of folks that believe it.
Drifting
Joined: Aug 2004
Posts: 1,883
Likes: 124
From: Lubbock TX
It's not a "509" casting, that's just what it has on the sides. The 509's worth the money are 400's and those are the last 3 digits of the casting number. The 010/020 supposedly indicates higher nickel and tin, but that's another can of worms.
You have the most common 350 block cast. If you get really lucky, the middle caps will have "2482" cast into them, they're nodular and stronger than stock.
You have the most common 350 block cast. If you get really lucky, the middle caps will have "2482" cast into them, they're nodular and stronger than stock.
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
There are 350 blocks with 509 under the timing cover said to be high nickle. There are 509 400 blocks with the 509 in the casting number as was said, and 509 400s with the 509 under the timing cover.
I have approx. 100 chev blocks in my core building at any given time. Usually can find some of each type most anytime.
I have some of the sbf mexican blocks out there also.
I have approx. 100 chev blocks in my core building at any given time. Usually can find some of each type most anytime.
I have some of the sbf mexican blocks out there also.
