What size motor is a 3970010?

What size motor is a 3970010? How do you identify a block? How do I know if I have a V8 engine? Is 302 better than 351w?…What size motor is a 3970010?

Casting Number	cu. in.	Notes
3970010	350	2 or 4 bolt main bearings
3970014	350	2 or 4 bolt main bearings
3970020	307	2 bolt main bearings

What engine is a 3970010?

Details about GM 3970010 Small Block Chevy 350 Bare Block 4 Bolt 4.030 Bore I-20-6 Date.

What year is 3970010 block?

“CHEVROLET sbc 350 4 BOLT MAIN’S/BLOCK # 3970010. DATE Code IS H 2 3. BLOCK IS DATED 1973……

Which is better 2 bolt main or 4 bolt?

A 2-bolt main with aftermarket studs is stronger than a 4-bolt main block, less prone to crack, and can take up to 600 HP on a seasoned block. NEVER buy a new block that does not have the manufacture name on it such as “Dart” or “GM Performance” because it’s made overseas and it is CHEAP.

How do I get more horsepower out of my 305 Chevy engine?

Bolt-on Upgrades

Replace the exhaust manifold. The stock exhaust manifold of the 305 engine restricts air flow from the engine increasing back pressure.
Replace the intake manifold and carburetor.
Add cold air induction.
Replace the computer chip.

What is better 2 bolt main or 4 bolt main?

A 2-bolt main with aftermarket studs is stronger than a 4-bolt main block, less prone to crack, and can take up to 600 HP on a seasoned block. Most of the engine builders online, including some big brands, will drill extra holes on their 2-bolt main blocks and it makes the mains weaker and more prone to cracking.

How can you tell if a bolt is 2 bolt or 4 bolt main?

Pull the oil pan and look at the caps that hold the crank. It it has 2 bolts holding the main caps on, it’s a “2 bolt main”. If it has 4, then it’s a 4 bolt.

How do I know if I have a GM V8?

All engines are stamped with an engine ID code, consisting of assembly plant code, production date and suffix code. V8 codes are stamped on a pad just forward of the right side (passenger) cylinder head.