flathead 8BA questions

hey all i started getting my flathead cleaned up for some fresh paint (in the car) tonight i noticed a couple things and want to know if they are normal

first my waterpump pulleys are different diameters my driverside is larger then my p***enger side pulley is this the way it should be?

second i took my p***enger side exhaust manifold off ( got new headers) and the 2 bolts on the front exhaust port are larger then the other 4 it doesnt look to have been drilled and tapped or anything

this is my first flattie so im still learning so bare with me.... well dont get BARE , just be patient with my flattie ignorance okie

 

Are the pump diameters different, or are you talking about pulley width? As a general rule, most of the earlier pump pulleys are 5/8" wide, and I THINK that 1952/53 are 3/8".
As far as the exhaust bolts...yes, the front exhaust bolts are bigger than the rest. Don't know why though...

 

The front two block exhaust manifold studs on Ford flathead V8's are 7/16, the rest are 3/8". The fronts were/are heavier due to the extra weight of the x-over pipe used on the stock exhaust system.

 

Yep, pulley diameters are different. Mine was that way too. Not sure why though.

 

ok thanks guys for the answers much appreciated

 

The '50-'53 Ford and Merc cars use two 3/8" narrow belts. The pump pulleys have different diameters, and match the different crank pulley sheave diameters for each belt.