Anyone know what the two digit raised cast numbers are on 289 HiPo heads with Thermactor Emissions?
Randy
Anyone know what the two digit raised cast numbers are on 289 HiPo heads with Thermactor Emissions?
Randy
Not sure what you mean. The first smog heads were C7ZE heads, but had the same markings as the C5OE head in the rocker arm areas, with updated date codes.
I think this individual is refering to cars that were to be sold in California in 1966 when their smog regulations went into effect. I have a set of A code heads from a 1966 San Jose car that were thermactor equipped. I don't know if the K code heads of that period are similar.
The original post mentions Hipo heads not the A or C code ones. Since it took Calif till mid April before it caught up with the Hipo/K code these heads (Hipo with thermactor ports) came installed on only a hand full of cars.
No 66 Hipo California car sold to the public was required to have Thermactor originally - though the state has tried many times since then to retrofit these cars will all sorts of systems
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