69 single four barrel air grabber base

Does any one know how to tell the difference between a 440 oval air grabber base and a 383 unit?

thanks

if you lay it on a flat surface and the round part that sits on the carb is original and uncut

383, the whole unit will sit slightly off the flat surface

440, the unit will touch the flat surface

the 440 unoit is lower due to the 440 being slightly taller than a 383

Thanks for the information. I'll have a look!

The difference in height of the necks is about 3/8"....

383 base

Butch

440 base

Butch

For the number of times this comes up, we should get this into the tech archives with those two pictures. Just my