Physical difference in 4.5, 5.0 and 5.5:1 heads

[Dkrahn]

I have multiple Model A heads in my garage. I can't remember which are good and which are not. Does anyone have a link or pictures of what the 4.5, 5, 5.5 and 6:1 heads look like. I once seen a picture that shows the physical differences, but have lost it.

Appreciate it
Dean

 

[rotorwrench]

This is a good thread. I just googled it. It makes a large search string work better for Ford Barn searches.
https://www.fordbarn.com/forum/showthread.php?t=277178

 

[nkaminar]

The 5.5 head from Snyders has a heart shaped combustion chamber with a sharp point at the bottom of the heart. The 6.1 head from Snyders has a rounded bottom at the combustion chamber. Both are out of stock but you can go to Snyders and look at the heads on their web site.

 

[Gary WA]

here you go Model 'A' Ford Garage ~ Model 'B' Ford Garage

 

[Brad in Germany]

here you go Model 'A' Ford Garage ~ Model 'B' Ford Garage

Here's the direct link to the article on www.fordgarage.com describing (with pictures) the different engine heads for the Ford Model A:

https://www.fordgarage.com/pages/ABcylinderheadcomparison.htm

Brad in Maryland

 

[Y-Blockhead]

The easiest way to tell a Snyder 5.5 is the 2 dots on the top. It is also physically smaller.

Snyder 5.5 on my Town Sedan

 

[Dkrahn]

Yes, that is the one I say before - Thank you much

 

[updraught]

>> The easiest way to tell a Snyder 5.5 is the 2 dots on the top. It is also physically smaller.

Isn’t the 6.0 also physically smaller? As far as I know this was only fixed with the Burtz head.

 

[alexiskai]

>> The easiest way to tell a Snyder 5.5 is the 2 dots on the top. It is also physically smaller.

Isn’t the 6.0 also physically smaller? As far as I know this was only fixed with the Burtz head.

Correct

 

[Benson]

As I remember, there were one or two Repro heads which were too short (front to rear) where the gasket stuck out over the edge of the head in front and rear.