Weird no.s off my 7028268 carb. base

[Mr.Pontiac]

I have rebuilt probably 40 carbs so far & im confused a little bit. Every pontiac carb. ive rebuilt carb i did for 68 thru 70the base plate was always stamped 7037174, just came across a 68 carb. 7028268 with a identicle base in every way but its stamped
7035733 humm, why any help?? Thanks for reading my question & hope you can help me out.

[Ethan1]

I have rebuilt probably 40 carbs so far & im confused a little bit. Every pontiac carb. ive rebuilt carb i did for 68 thru 70the base plate was always stamped 7037174, just came across a 68 carb. 7028268 with a identicle base in every way but its stamped
7035733 humm, why any help?? Thanks for reading my question & hope you can help me out.

 Don't know either. Correct baseplate casting number for that carb is 7035898.

[Mr.Pontiac]

Ethan i may be wrong but i think that no. is the complete baseplate assembly not the one in the circle on rear of baseplate
directly behind bore of carb.

[Ethan1]

Ethan i may be wrong but i think that no. is the complete baseplate assembly not the one in the circle on rear of baseplate
directly behind bore of carb.

 My bad. You are correct.

[Ethan1]

 Maybe it is a "newer" version of that baseplate? Kind of like a service replacement? I am not sure.