Just be sure the suffix is actually what you think it is, they can be hard to read sometimes. This page has basic information on it, but it's a portion of the Small Block Chevy numbers information. The clock is a circle of 10 dots, one dot for each hour of a shift usually 10 hour shifts. V, truck crate motor, 118cc chambers 12562933. Casting markings on the end of the Gen I cylinder heads, which help identify which casting the individual heads are. The casting number on this head is 3795896. No accessory mounting holes 3917291 — 64cc combustion chamber 3932441 — 161-165cc intake port.
Must Check Balance Shaft Casting Number. . If you know what to look for, you could find an uncut diamond waiting to be polished. Chevrolet had introduced its popular small-block V8 in 1955, but needed something larger to power the medium-duty trucks and its heavier cars that were on the drawing board. Bowtie, aluminum, 45cc chambers, 2nd version, symmetrical ports, 240cc intake ports, splayed valves 10205245.
I also have a 3 inch body lift which makes seeing the number easier. Some replacement blocks had 2-bolt main caps 3956618. In all, over 90,000,000 small-blocks have been built in carbureted and fuel injected forms since 1955. Look on the top on either side of center. Roller or flat tappet cam one-piece rear seal 14094766.
Camel hump,64cc chambers,accessory holes 3927187. If there is more than one entry for your suffix code, then use the engine block casting date code to identify the year of the engine and identify the correct suffix entry. Roller cam, one-piece rear seal 14016376. This head was sold as a bare casting when new, so machine work will determine finished valve, chamber, and port sizes. And if you find our site helpful, please like us on Facebook! Bowtie, Aluminum, nodular iron splayed caps, wet sump, 4. The port was designed to match the 1. Over the years, every American General Motors division, except Saturn, used it and its descendants in their vehicles.
The engine code and partial vin will accurately nail down whatever the thing is rather quickly, and the other information will fall into line with that. Some blocks had 2-bolt main caps 3956618. . Bowtie, Aluminum, nodular iron splayed caps, wet sump, 4. Has 6 Bolt Timing Cover And 10 Bolt Oil Pan Rail. Then, in 1997, the third-generation small block was released.
. Bowtie, aluminum, 45cc chambers, 1st version, symmetrical ports, 263cc intake ports, splayed valves 10185040. Roller cam, one-piece rear seal 14088548. However, a standard small-block Chevy intake can be modified to work. Has A 10 Bolt Front Timing Cover. Heat can be an issue with used Vortec heads. No side motor mounts 3737739.
Originally, the stock 906 casting head was available in two versions. Small Block Chevy Engine Block Identification General Decoding Information This topic can be somewhat confusing, especially with the amount of information available and the interpretation of it. Aluminum, 58cc, angle plug 14102187. Unleaded fuel requires the valve seats be replaced with hardened valve seat inserts or they wear the valve seats very quickly. Small-Block Chevy Gen-I Cylinder Heads Standard Gen-I small-block Chevy heads position the valves at a 23-degree angle to the deck.
I, also used on crate motors, 285 or 300 hp, 64cc chambers, 72' center manifold bolt angles 14101128. . We appreciate the support and encouragement we have received from our visitors around the world. . Truck, Made in Canada 3731762. Their true strength is low lift flow which gives more area under the total flow curve which is where valves spend most of their time during engine operation.
Combine this with high velocity, lack of turbulence, and superior combustion chamber design, and this is where the Vortecs really stand out. Over the counter, angle plug, 64cc chamber 354434. This drawing is of the 1967 version of the 302 cid Chevrolet. Some replacement blocks had 2-bolt main caps 3956618. . Leave them for us below! The 450hp engine is a 6. The other version was the traditional three angle valve grind.
. Connecting Rod Bolts M9 x 1 x 43 Connecting Rod Part Number 12649190 Connecting Rod Casting Number last 3 digits 143 Crankshaft Material Cast Iron Crankshaft Part Number 12574522 Crankshaft Casting Number last 3 digits 216 Crankshaft Main Journal 2. The first small-block with a 4-inch bore came in the 1962 Corvette 327ci, and it really opened eyes. The Gen I heads that were capable of making decent power were developed when leaded fuel was used. Camel hump,64cc chambers,accessory holes 3927188. The Engine Code page is where this topic is further detailed. The Gen I small-block Chevy cylinder heads feature a wedge shaped combustion chamber.