350 truck engine 010 block/Differance
Safety Car
Joined: Nov 2008
Posts: 3,720
Likes: 556
From: Seattle Washington
There was once a great demand for the 010 Blocks as they had more Nickel in the Cast Iron which made them stronger. For the most part this has been proven to be false. However there isn't any other Block that is better, other than aftermarket ones. Probably the only difference between a Truck and Car 010 Block is the serial number stamped on the deck.
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
There are no interchangeability issues between small block passenger car engines and truck engines in 1970, if that's your question...
Casting number 3970010 was used from 1969 - 1979 on the 350s that were used in cars, trucks and Corvettes. It was also used on 1968 327's, so be sure to check the date codes. This casting was used for both 2-bolt and 4-bolt blocks. It is not a "truck-only" casting number, and only the stamped-in engine code will tell you if it was originally used in a car or a truck. For practical purposes, that's irrelevant, unless you're seeking "numbers matching."
Casting number 3970010 was used from 1969 - 1979 on the 350s that were used in cars, trucks and Corvettes. It was also used on 1968 327's, so be sure to check the date codes. This casting was used for both 2-bolt and 4-bolt blocks. It is not a "truck-only" casting number, and only the stamped-in engine code will tell you if it was originally used in a car or a truck. For practical purposes, that's irrelevant, unless you're seeking "numbers matching."
Thread Starter
Drifting
Joined: Jan 2014
Posts: 1,866
Likes: 140
From: Sadieville Kentucky
35/350truck
There was once a great demand for the 010 Blocks as they had more Nickel in the Cast Iron which made them stronger. For the most part this has been proven to be false. However there isn't any other Block that is better, other than aftermarket ones. Probably the only difference between a Truck and Car 010 Block is the serial number stamped on the deck.
Wes
Thread Starter
Drifting
Joined: Jan 2014
Posts: 1,866
Likes: 140
From: Sadieville Kentucky
There are no interchangeability issues between small block passenger car engines and truck engines in 1970, if that's your question...
Casting number 3970010 was used from 1969 - 1979 on the 350s that were used in cars, trucks and Corvettes. It was also used on 1968 327's, so be sure to check the date codes. This casting was used for both 2-bolt and 4-bolt blocks. It is not a "truck-only" casting number, and only the stamped-in engine code will tell you if it was originally used in a car or a truck. For practical purposes, that's irrelevant, unless you're seeking "numbers matching."
Casting number 3970010 was used from 1969 - 1979 on the 350s that were used in cars, trucks and Corvettes. It was also used on 1968 327's, so be sure to check the date codes. This casting was used for both 2-bolt and 4-bolt blocks. It is not a "truck-only" casting number, and only the stamped-in engine code will tell you if it was originally used in a car or a truck. For practical purposes, that's irrelevant, unless you're seeking "numbers matching."
Wes
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
Most 350s are 010 blocks. Some say 010 and 020. but for the most part the 350s are 010s. As far as the nickle content goes they bore and hone like most any other block. There are some who have 509 cast under the timing cover that are supposed to be high nickle blocks also. Not the 509 400 block. I don't know if they are high nickle content or not but they do seem to bore with a different sound as the cutter goes through the cylinder and do seem to have a higher luster when finished. Not having seen any lab report to substantiate this it's only an observation. It would be nice if someone knew or was capable of doing that testing. If anyone knows where that could be done, I'd cut some samples of blocks and send them for testing. We could end the rumors once and for all......Ha, that would never happen.
Back to the question at hand, the 010 block came both in cars and trucks. In two bolt and four bolt main conditions.
Back to the question at hand, the 010 block came both in cars and trucks. In two bolt and four bolt main conditions.
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