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CID. Cylinder Block Applications by Casting Number 491 - 598. As the 330 grew, so did the list of cylinder heads used on its upgraded cousins. engine. 10065202. trailer
Number 5 & 4 ports still fed heat to the passage for fast warm ups and these heads showed improved horsepower ratings; especially when exhaust headers were used. , 1964-1988 Olds Gen 2 Engines - Cylinder Head ID and Casting Number Decoding. The small block Ram Rod and W-31 s ('68-'70) utilized special head castings featuring 2" intake and 1.625" exhaust valves. 1.94/1.50. In 1967 Pontiac made some open chamber heads(i.e. This condition may cause premature gasket failure. The 330 was much lighter than the 394 and more powerful than the 215 F-85 V-6 power plant it replaced.For over 25 years we witnessed the 330 evolve into many other cubic inch engines. 1928 had push rod covers and 2 port head so casting surfaces in block. body {
Pontiac made closed chambered heads until 1967. All small blocks have a large number in the same location, 1, 2, 3, etc. In 1971, the correct W-30 cylinder heads carry an "H" designation. When looking for big valve #5 and #6 heads, be careful. If you know the code number, try my new head search. These letters were cast into the front of the left head and the rear of the right cylinder head. Some 455s were fitted with 1.688 diameter exhaust valves instead of the 1.625 diameter valves that were normally used. Non-California cars had plugs installed in these tapped holes. When the W-30 first arrived in 1966 it had its own special heads, part No. This created a venturi effect increasing flow with these heads. Heads 1964 - 1990. No matter whether itâs a burnt valve or a blown head gasket thatâs sidelined your Oldsmobile, we have the cylinder heads, gaskets, and bolt sets to get it back on the road. âthese heads will have 2.190 intake and 1.72 exhaust valves. 33-34 "standard" (bastard) engine had water pump in head. Cylinder Head ID. var WinInfo = "toolbar=no,scrollbars=yes,directories=no,resizable=yes,menubar=no,width=" + Width + ",height=" + Height Engines: Oldsmobile V8s: Differences between 5A and 6A/7A heads. 1957 and later cylinder heads will physically bolt on to 1949 to 1956 engines, but the port matchup on intake maniflolds will be off because different cylinder deck heights are used. A letter indicates a big block, a number indicates a small block. Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. Unfortunately, this only applies to what was originally the passenger side head. 0000001174 00000 n
350. Exhaust Crossover Port Matchings; With Head: The small block engine used a number and some had a number and a letter. Some have an additional letter (an ⦠2 ribs and 3 ribs help identify the cylinder heads during assembly. Casting Number. 0000004371 00000 n
The heads have a large C underneath the front of the drivers side valve cover as well as the stamped number of 894 548 which is separated by the vcenter valve cover bolt, as well as a CFD about 3-4 to the left of the stmaped head â¦
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