[Dick Boneske]

Jon Hardgrove created the manifold/carb part number document--I've had it for 35 years or more. It should help people who need info on which manifold is for which year. The carb numbers will help only if the carbs have tags on them, and, even then, there's no assurance that they are the correct tags for the carb they're on. What matters for "correctness" is the casting numbers, which I explain below.

The second document is an exploded view of a '64 Pontiac Tripower with vacuum linkage. Note that the '65 center carb lever extension for mechanical linkage is shown on the bottom right of the page.

I find it interesting that there were only two years where the Tripower intakes had the same casting number--1961 and 1962. Even with the same casting number, some '62's were different in that they had a cast area to install PCV nipples for an "F" fitting.

Also note that the airhorn used on the end carbs is the same casting from 1959 to 1966, casting number 7013206. The float bowls were the same from 1959 to 1963 with casting number 7011997 and from 1964 to 1966 with casting number 7029683. They have slight differences in appearance, but are functionally identical. The 1959 to 1963 throttle bases limited the throttle opening to about 80%, due to the way the throttle stop was machined, whereas the 1964 to 1966 bases allowed full throttle opening. There was a new casting number for the throttle bases sometime in 1966, but I can't see any difference between it and the earlier bases.

I hope this helps you identify parts when you're building a Tripower.