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The block and just about all parts have a "casting number" on them. Your block #3970010 was used by GM from 1969 through 1980 in anything from a 1/2 ton pickup, to the HOT Z-28's. It could be either a 2 bolt or a 4 bolt design. What that means is that the crankshaft is held in the engine block by main bearing caps that are designed with either 2 bolts or 4 bolts. The 2 bolt is good for non-high performance, less than 6,000 RPM's. The 4 bolt design, spreads the rotational stess over a much wider area within the block is used for over 6,000 RPM's. Hope this helps.
What else can I help you with?
Is this a good block 3970010?
It is an excellent GM block.
What gm engine has 3970010 on the block and 12L538322?
It's probably a 1972 350.
What is gm casting number 3970010?
It's a 4" bore block. Has been used for 302, 327, and 350 engines.
What GM engine has a casting 3970010 and stamped numbers on the front of the block K0608 CTL and 221111068?
350 and 327 [1966 - 1980]
What is a GM 3970010?
1970 Z28...Stacy
What are the specs on casting GM Engine No 3970010?
GM engine block # 3970010 was used as early as 1968 on some 327ci engines. From 1969-1979 it was a 350ci engine. It could be a 2 or 4 bolt block used in cars, trucks and even corvettes. You can also find these blocks with a "MEXICO" stamp on them near the block ID. It has been said that these are high nickle content blocks and may be stronger than others.
Need to know gm engine id number 3970010?
4bolt 350ci
What year 350 has casting numbers 3910010?
Gm 3970010 the model?
What does 3892657 mean for a GM block motor?
how much is it worth
What year is the Chevy motor with the casting numbers of gm 3970010?
it is a 1969-1979 motor it was used in cars, trucks, and vettes
Gm casting number 3970010 but what is the A81 on the passenger side?
A81 should be January 8, '71,'81,'91.
What does GM 5.7 LG mean on engine block?
how can i find what kind of engine i have
