Hello can anyone tell me the stock jet sizes for a 7040257 and a 7040251 carb and any other differences thanks Joe

 

This is the info I have archived for those carb numbers:

Year & Application..................Carb #.........Main Jet.........Primary Rod.........Secondary Rod
1970 455 W-33, 442 A.T........7040257.......7031969.......7040701- "52C".......7033655- "AU"
1970 455.............................7040251.......7031 970.......7034849- "49B".......7033655- "AU"

 

Thank you so much could you give me that info for one more carb 7043250 thanks again Joe

 

Unfortunately the database I have only goes up to 1972, so no info on the 1973 carb.

 

OK thanks again!

 

.069 prim jet,pri rod..053, sec jet,0.135, sec rod,.077, rod code,CG

 

Hello 442harv is that for the 7043250 carb?

 

Yes

 

Thanks!