How do I know if I have a 4 bolt main 350?

How do I know if I have a 4 bolt main 350?

Use the suffix code on the block and determine if the engine is original or not. That code can’t always tell you its a 4 bolt but if its the origianl motor in a 4 wheel drive 3/4 ton its almost a guarantee its a 4 bolt block.

How do you decode GM engine numbers?

Every GM engine is stamped with an eight-digit code….How to Decode the GM Engine Block

1. Locate the engine block code.
2. Wipe any grease or dirt off the code to make sure you read each digit correctly.
3. Look at the first digit, which will be a capital letter.
4. Read the next four digits in the code, which will be all numbers.

How do you decode a big block Chevy engine number?

The prefix code is identified by the first few letters. The plant where the Chevy big block engine was manufactured is the first character. The following numbers are the day, followed by the month. For example, a prefix code of T1218: “T” stands for town of Tonawanda, 1218 stands for Dec.

How do you read a engine serial number?

Your serial number is located on your engine plate, often located on the left-hand side of the engine. Typically the first letters and numbers will identify the engine, for example, DJ51279, to find all the parts we have online for your engine.

Will 305 heads work on a 350?

305 heads on a 350 will raise your compression a good deal, maybe even too much for pump gas if you have flat tops or domed. I would go with 350 heads if I were you. If you have flat top pistons a set of 350 heads would be best.

Can you make a 305 fast?

Yes you can make your 305 fast.

How can I get more horsepower out of my 305?

Bolt-on Upgrades

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

How much HP can a 396 make?

The 396 was offered in several configurations and produced different horsepower and torque ratings, depending on its intended application. The 396 with a 10.25 compression ratio produced 325 horsepower at 4,800 rpm and 410 ft. lbs. of torque at 3,200 rpm.

Is a 396 a good engine?

The 396 is a good revving engine, so you’d want to run a steel crank so it would live at the rpm you’d have to run it to make HP. And probably a roller cam, as flat tappet cams in big blocks have a nasty habit of “going away” relatively easily.

What is the difference between a 396 and a 427?

The cranks have the same stroke 3.76. The 396 crank is lighter having 3/4″ wide 3rd counterweight. The 427 cranks look identical except the 3rd counterweight is 7/8″ thick, heavier crank due to heavier pistons for the larger bore.

What is the difference between a 396 and 402?

Although it displaced 6-cubic-inches more than the 396 and had a bore that was 0.03 inches wider than the 396, Chevrolet marketed the 402 as a 396 on its smaller cars like the Nova, while labeling it as a 402 in its full-size automobiles.

Is a 402 a good engine?

72 402 is a low perf cast crank 2 bolt engine with those strange low compression heads that don’t look like the 454 open chamber heads. In stock form it’s a boat anchor, but with a bit of mild porting, a cam, and headers it can make an old Chevy go pretty good. The problem is it can also cost a bit to rebuild it.

How do I know if I have a 396 big block?

Big blocks are named after the size of their displacement as measured in cubic inches (e.g., 350, 396, 440 and so on). It is easy to identify a 396 Big Block engine made by Chevy as the engine code is stamped above the timing chain cover.

What size engine is a 396?

6.5 L

What year did the 396 engine come out?

1965

Is a 6.2 A big block?

What sets the 6.2 apart is its 115mm (4.53 inch) bore spacing. In the 6.2, that translates into a 4.02-inch bore. We’ve come to think of the 6.2-liter as a big-block modular. Of course, the only modular architecture making it through to the 6.2 is the bellhousing bolt pattern.