I just took the engine,tranny and rearend out of the bird. Good news is they all are correct numbers with the exception of the carb and intake. I have a intake with a casting number 3784234 and I believe it should be 9794234. Seems like the last 4 numbers match? any chance it's correct? I can't find whats it's supposed to fit so I do have hope. Thanks
My Firebird parts manual shows the 9794234 as the correct intake manifold for '68. I believe the casting numbers are the part numbers also. Is there any chance you could be missreading the 3 and the 8 and they could actually be 9s?
You will have to post the photos to a photo sharing site like Photobucket and then embed as an image in a post here.
1968 400 Coupe, verdoro green, black vinyl top 1968 400 Convertible, verdoro green, black top 1971 Trans Am, cameo white, auto 1970 Buick Skylark Custom Convertible 350-4(driver)
What is the date code? It should be something like G028 (G = July) 2, 1968. It is right by the thermostat base on the water crossover.
It doesn't look like they made any other intakes that end in 4234 other than the 9794234. So if it dates June (F) 1968 or later it must be a 9794234. It is a very good flowing intake that has tested to be as good or better than the after market ones according to Jim Hand's book.
Just to add to this, early '68 400 4BBL intakes were the 9790140. Here is a picture with the casting number and the date code of October 23 1967 on my original 400 engine. As you can see, one picture was taken before the engine was painted. Not sure what date they switched to the 4234 intake.