Of course, Brodix also manufactures 5. Aluminum, reverse-flow cooling, 195cc intake ports, 54cc chamber, angle plugs. F-12-5 indicates that the head was cast on June 12, 1965, or 1975, or 1985, depending on other clues including the casting number, port shape, chamber type, and valve size. Splayed valves point both intake and exhaust valves at the center of the cylinder bore. We appreciate the support and encouragement we have received from our visitors around the world. Aluminum, 58cc, angle plugs, raised runners, d-port exhaust, 1.
Roller cam, one-piece rear seal 14088548. All 400ci small-blocks utilize Siamese cylinder walls. The blind head-bolt holes require no thread sealant, and positively eliminate the ageold problem of engine coolant leaking into the engine through the head-bolt bores in the head. Example: C6 would be 1966, D0 would be 1970, D1 1971 marine engines,marine motors,Ford,Chevrolet,Chrysler,marine diesel engines,outboard,inborad,rebuilt marine engines,repair, boat engine,marine engine,used marine engines,engine marine Rebuilt engines;remanufactured engines,aftermarket engines, replacement engines,performance diesel engines,new engines, used engines, boat engines,high power engines,boat motors. Cargo and load capacity limited by weight and distribution. Several intermediate displacements appeared over the years, such as the 283 cid that was available with mechanical fuel injection, the 327 cid as well as the numerous 350 cid versions. Roller or flat tappet cam, one-piece rear seal 14093638.
The 62cc combustion chamber is designed for use with flat-top pistons. It is a big-valve service replacement head with 325-cc rectangular intake ports, 118-cc chambers, and 2. This is cast on almost all passenger car heads. Once plentiful in salvage yards, finding them at a relatively lean price is getting harder to realize. Some blocks had 2-bolt main caps 3956618. For the true Chevy guy, the in-depth listing is a wealth of knowledge that is vital.
Oval-port heads are known to easily support up to 600 hp with the proper combination of parts; some builders have exceeded that mark by a considerable amount in special applications. Rectangular-port heads came with larger 2. Head Casting Numbers 064, 209, 626, Or 181 Last Three Digits. It features Bowtie logos cast over the outboard exhaust ports and accepts a head-mounted temperature sensor. That allows maximum-size valves to be installed without increasing bore size.
Maximum Bore Sizes When overboring your block, the best way to determine the maximum safe bore size is to use a sonic wall thickness tester, a very expensive piece of equipment that most high-end machine shops will have on hand. Aluminum, 58cc, angle plug 14102187. Probably the easiest feature to spot when trolling for blocks at the salvage yard is the six-bolt composite or aluminum front timing cover. Maximum bore size is 4. I Goodwrench crate motors 14034810. Then, in 1997, the third-generation small block was released. Heads are assembled and include intake valves and other valvetrain parts.
These value-priced cast-iron cylinder heads use modified combustion chambers and high-velocity port technology to provide improved performance. The 502 was never installed in production vehicles, though many were used by the marine industry, especially Mercury Marine. Bowtie, siamesed, straight nodular iron main caps, 2-piece seal, 4. Another block of considerable interest to hot rodders is the 502, sometimes referred to as the 8. The rear main cap has provisions for a wet sump pump, and the block is also drilled for dry sump valley scavenge lines with cross-feed lines between left and right lifter oil galleries. No side motor mounts 3737739.
Note evidence of Brinelling around the gasket openings; the small permanent indentation may lead to gasket failure. Vortec , roller cam, one-piece rear seal 10243880. This makes the 502-ci block an ideal start for a moderately high horsepower street, marine, or drag race engine, but remember that it is basically a production-line block and does not tolerate large overbores. The exhaust ports and exhaust manifold-bolt holes are in the same location. In 1962, the 327ci engine in the Corvette was the first small block to offer a 4-inch bore. The format consists of divisional identification number, model year, assembly plant designation and vehicle serial or sequence number.
Intake port volume varies from 225 to 262 cc with exhaust port volume ranging from 110 to 119 cc. All factory oval-port heads are made of cast iron. . This Tech Tip is From the Full Book,. This head was sold as a bare casting when new, so machine work will determine finished valve, chamber, and port sizes.