On a 72 Riviera can a 73 qjet interchange w/o hassle if

[Jim68Skylark]

number is 7043240LA0203


I think it breaks down as follows

70=quad

43=73

2=49(quad 4bbl federal standards)

4=Buick

0=Auto

and should interchange with

the 72 which is an automatic 455 4bbl

correct me if I am wrong

kinda new to this world

TIA

[Smartin]

Yep!

[RAbarrett]

You will also find that the '72 carb is a little richer, which will assist in both power and mileage. I have, on too many occasions, seen emissions go DOWN and mileage go up by slightly enriching the mixtures. It is because the richer mixtures allow better throttle response, and less required throttle settings for the same performance. Ray