Look what I found in my shed 3970010

[AuroraGirl]

guys who build small blocks for race cars know whats up

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[Red Rex]

Steel tube?

 

[78C10BigTen]

High nickel 010. Cool

 

[78C10BigTen]

High nickel 010. Cool

 

[TubeTruck]

a 350?







edit: fat fingered 305 instead of 350. My brain works faster than my fingers sometimes.

 

[TubeTruck]

High nickel 010. Cool

I don't see a ++. AFAIK, which isn't much, high nickel blocks have a ++ after the casting number. The actual nickel content is under the timing cover.

 

[78C10BigTen]

I don't see a ++. AFAIK, which isn't much, high nickel blocks have a ++ after the casting number. The actual nickel content is under the timing cover.

Was not aware of this. I thought all 010 were high nickel

 

[TubeTruck]

Was not aware of this. I thought all 010 were high nickel

I wish! 3970010 was the most common casting number GM used on their 350's from '69 through '80. It was also on the 302 and 327 but less common. If you do find a block with ++ after the casting number it will have either 010 or 020 (10% or 20%) under the timing cover just above the main bearing. The first number is Tin and the second is Nickel, unless it only has one number, then it's just Nickel.

 

[DoubleDingo]

Was not aware of this. I thought all 010 were high nickel

That's what happens when you go to thinking...lol...

 

[Craig 85]

I see a torque converter cover for a 4x4.

 

[AuroraGirl]

Awww, to hear it might not be the high nickel. thats sad. Oh well, I dont race lmao. My uncle called dibs and its not going to be used by me.. I only have 4 other engines sitting around that could be used.

 

[Poppy 87]

See hei, if original that's '75 or later

 

[HOTFOOT]

3970010 350 4 bolt mains

 

[HotRodPC]

Hi Nickel isn't needed for racing. That's all hype. I think the whole nickel content theory is hype. Sure it's nice to have so go with the oldest block you can find. The older the better cuz things were made better and stronger back then. You get an 80's 3970010, you just have run of the mill block. You get a 69-70 block you probably have one high in nickel. Racers shouldn't even give a rats ass. They'll be rebuilding it soon enough anyway if they're real racers. I rebuilt my engines about every 2-3 years. All a high nickel block will do for you is your bore will last longer and the rings don't wear the bore as fast. That's it. So in reality, the guy building an engine for his Square that he wants to last 15 to 20 years, he's the guy that should care if he has high nickel or not. I do not care. What's more important to me is that the line bore is perfect so I don't have a big expense having the block line bored and cutting my main caps and my head surfaces are flat and not warped.