I've seen a few list that state the intake manifold casting number for a 67 , 400. Checking to see if mine is correct, I think it is.

My intake number is 9786286. Some list state it's 67 GTO intake, but they don't list a 67 Firebird at all. Another list states 67 326/400/428, 4-BBL = 9782896.

Is mine correct? Everything else is on the money!

Thanks,
Art

There can be some confusion as there is the issue of CASTING numbers vs PART numbers and manifolds for Carter carbs vs QJets. Manifold PART numbers are near the bottom of the 1st attachment under Section 3.265

Engine Part Numbers

According to this factory listing, correct PART number is 9786285, same as Pontiac 400 and 428 4bbl's and Tempest 400 4bbl which would have been a GTO.

This listing has that 6286 casting number as you state above:

Fred's Pontiac Info Intakes

Other places say that 9782896 was for 1966/67 for Carter AFB carbs where the 6286 is for Qjets:

Frank's Pontiac Parts

GM Intake Manifolds

Well so another case of misinformation or typo's. I know my car is pretty much number matching Engine is WZ 400, 4sp, 670 heads, correct carb. and dist. I was just looking a few list that I haven't seen before.

Art

I am trying to verify that casting numbers differ from part numbers for cast items by 1 digit. I could not find that anywhere but I have a dim memory that is the case.

Our resident expert, Banshee, would be the guy to PM all of your numbers to verify they are correct. And date codes.