It could be a 327, 302, or 350 all of those used that same casting # at some point during thier run.

Now to find out 100% what you have, you need the block sufix code. Generation I Small-Block. Small Block Chevy V8 Casting Numbers. 69. They can be identified by the numbers cast into the block on each side of the front cam journal -- something like "010" on one side and "020" on the … A "two-bolt" main, or a four-bolt main. Chevy V-8 Casting Number Locations by Mortec Chevy BB and SB casting number "go-to" site from outintheshop.com Smallblock info from nastyz28.com Click Header to Sort. Main Bolts. Re: Engine Casting Block #3970010 02-13-06 06:27 AM - Post# 873995 In response to joeysworld I think GM made more of these blocks than any others. Meaning no way it's a 305. Chevrolet has produced the small block engine in dozens of different configurations since it was first introduced in the mid-1950s. 10036033 Small Block V8 350, 4-bolt, Goodwrench crate engine, 2-piece rear seal Look on the top on either side of center. Reference: Chevy Engine Block Casting Numbers By Bobby Kimbrough September 19, 2013 The Chevrolet small-block engine is a series of automobile V8 engines built by the Chevrolet Division of General Motors using the same basic, and for a V8, smaller engine block. Trucks and industrial. 3970010. Hello everyone, I have had a smallblock chevy engine in storage for ten years. 69. Need car detail.

General Motors alloys all of its cast iron blocks with a certain amount of nickel, but for some time, cast them with a far higher nickel content than it does today. Size. SBC Block Casting Numbers. Chevy Small Block - Engine Block Casting Numbers Notes (for below): "High Power" is the maximum rate HP this block was used for, "Low Power" is the lowest rated horsepower RPO engine the block was used in. 3970010. my question is is there any way to figure out what it is without knowing the stroke, thanks Chevy Casting Number identification including Block casting numbers, cylinder head casting numbers, Crankshaft and intake casting numbers. YEARS : CASTING : CID: LOW POWER: HIGH POWER : MAIN CAPS: COMMENTS: … To learn how to locate your casting numbers, casting dates and suffix codes, see Chevy V8 Casting Number Locations Page 1 and Page 2.. SBC Blocks Gm casting number 3970010, 350 4 bolt mail block. Chevy block casting numbers can usually be found on the rear of the block adjacent to where the block and transmission meet. The small-block family line was honored as one of the 10 Best Engines of the 20th Century by the automotive magazine Ward’s AutoWorld. The casting number is 3970010, now according to the chart this engine can be a 302/327/ or a 350 . Z-28 Camaro. Chevrolet has produced the small block engine in dozens of different configurations since it was first introduced in the mid-1950s. 3970010. The high performance versions (Z28, solid lifter Corvette, etc) had a high-nickel content. Casting Number.

Year. That # you listed was used on all of chevys 4.000" bore engines at one time or another. - Answered by a verified Chevy Mechanic

Choose Group to View Engine Block Codes Select Block Casting Group ALL Block Codes 262, 265, 267 302, 305 or 307 327 350 400 2. 302. 4. 327. The 302 is not likely because it was in the Z-28 Camaro with aluminum intake and Holly carb, very collectable and people are not going to put one in a truck. It could have been used in 302, 327 and 350. The last year for the 327 was 69 and the first year for the 350 was 69. General Motors alloys all of its cast iron blocks with a certain amount of nickel, but for some time, cast them with a far higher nickel content than it does today. ... Chevy II recessed oil filter boss Used for some Chevy II "CE" replacement blocks. "Main Caps" is the number of bolts holding the cap. Chevy engine casting numbers. This Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange. The numbers 3970010 indicates a block casting with a 4.000" bore. Here is a list of casting numbers, along with their original applications. 3970010 is the block casting #. Notes.

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