Are 62 Pontiac heads any good?
Are 62 Pontiac heads any good?
The #62 Pontiac heads are among the best 1965-1979 Pontiac heads but you should not waste them on a 350 CI engine. The bore/stroke ratio of a 350 CI engine is terrible and the block cannot be bored enough to take advantage of the #62 heads that were designed for 400 CI engines.
How do I know if I have a 428 Pontiac?
As you look there you may find a pretty simple clue that will end your engine identifying search. On 1968–69 428 blocks you will find “428” stamped between the freeze plugs. On blocks produced in 1970 and after, you will find 350, 400, or 455 stamped towards the left side of the front of the block.
What are Pontiac 670 heads?
670 heads are one of the most effective heads for making power–they’re excellent heads. That said, they are the last of the closed chamber, early style heads with the big valves. They were designed for 100 octane fuel, cheaply and readily available in the ’60’s.
What kind of head does a Pontiac head have?
PONTIAC HEAD CHART CASTING NUMBER YEAR & FACTORY APPLICATION CHAMBER VOL# CC’S NOTEWORTHY ATTRIBUTES 528511 1958 370 62 1.88/1.6 55-60 INT MAN 538177 61-62 389 62 1.88/1.6 61-64 INT MAN 543797 63 389 62 1.88/1.60 9770716 63 421 HO,64 GTO 65 1.92/1.66
Where can I find the Pontiac cylinder head ID number?
Pontiac Cylinder Head ID Numbers Pontiac Cylinder Head ID Numbers About Contact Parts For Sale GM FoMoCo MOPAR Gaskets Ignition & Small Electrical Items Light Bulbs Owner’s Manuals Seals
What kind of engine did the Pontiac Catalina have?
Late in the 1961 sales season the 421 cu in (6.9 L) Super Duty was released for sale as a dealer installed engine. The 1961 models never came from the assembly line with the 421ci engine; instead it was a specialty item installed and sold at the discretion of individual dealers.
What does year mean on a Pontiac head?
* During my searching for information, I found quite a few discrepancies in the sources I was viewing. In light of this, the ‘Year’ entry, as indicated by the chart below, may actually represent the year that the heads were cast, versus the year that they were actually installed on an automobile.
What kind of cylinder heads did Pontiac use?
Pontiac heads produced PRE 1968 used a closed combustion chamber design while heads produced from 1968 on used an open chamber. The high output heads produced by Pontiac after 1967 used bigger intake and exhaust valves and a 14-degree valve angle. These heads flow better producing more power than the heads produced pre-1967.
When did Pontiac start stamping cylinder head numbers?
In 1973 Pontiac started stamping extra numbers (1/4″ tall) on their heads.These head numbers represented chamber sizes.They are usually stamped on the machined pads by the valve covers. *All rocker arms are threaded beginning with Motor Unit Number 709986 assembled on or about May 7, 1973.
Late in the 1961 sales season the 421 cu in (6.9 L) Super Duty was released for sale as a dealer installed engine. The 1961 models never came from the assembly line with the 421ci engine; instead it was a specialty item installed and sold at the discretion of individual dealers.
* During my searching for information, I found quite a few discrepancies in the sources I was viewing. In light of this, the ‘Year’ entry, as indicated by the chart below, may actually represent the year that the heads were cast, versus the year that they were actually installed on an automobile.
