The Ford Barn

austin · 09-06-2010, 08:13 PM

Is there any way to externally distinguish a Snyder HC head from a stock head? Thanks

Ron in Quincy · 09-06-2010, 08:38 PM

Different combustion chamber than a stock A head.

Logan · 09-06-2010, 08:49 PM

the heads look the same when sitting on the block.

Aerocraft · 09-07-2010, 06:33 PM

A vast majority of the stock Model A heads will have a small raised casting mark on the top of the head in front of the water outlet above the boss for the water pump. The Snyder's head is smooth in that location. The first picture is a stock Ford head, the second is a Snyder's 5.5 head. This is not a foolproof way to identify a Snyder's head since I have seen other, older, aftermarket heads with no identifying features or casting marks. Gar Williams

30ccpickup · 09-07-2010, 08:07 PM

May Snyder head came in today and the casting sand pattern seems a little courser then my stock head. I intend to paint this weekend and hopefully the look will smooth out a bit.

austin · 09-08-2010, 09:05 AM

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Thank you all for your comments and Gar thanks for taking the time to send the two photos. Mine is smooth so it's "likely" that it is a Snyder. I just received the engine and it was "specked" out to have a Snyder HC head. It sure has more "guts" than my old one. Thanks again.

V4F · 09-08-2010, 09:58 AM

check compression . rule of thumb is : stock 55# ... 5.5 75# ... 6.0 85# ... steve

Bob/AZ · 09-08-2010, 11:26 AM

Quote:

Originally Posted by Aerocraft

A vast majority of the stock Model A heads will have a small raised casting mark on the top of the head in front of the water outlet above the boss for the water pump. The Snyder's head is smooth in that location. The first picture is a stock Ford head, the second is a Snyder's 5.5 head. This is not a foolproof way to identify a Snyder's head since I have seen other, older, aftermarket heads with no identifying features or casting marks. Gar Williams

I checked two of my older heads and they do have that small raised mark in front of the water outlet, whereas the Snyder is smooth. Also my Snyder has a perfectly round 3/8" diameter casting mark on the top drivers side a little more than half way back.

marc hildebrant · 09-08-2010, 12:12 PM

Group,

Very interesting. I have NO raised casting mark in the water pump area. I do have either a faint 18 or 19 near the front of the head toward number 1 cylinder. Also, the compression is 70 lbs here in "thin air" colorado (5000 ft).

I wonder if I have a HC Head ?

Marc

09-06-2010, 08:13 PM	#1
austin Junior Member Join Date: May 2010 Posts: 15	High compression head Is there any way to externally distinguish a Snyder HC head from a stock head? Thanks

09-06-2010, 08:38 PM	#2
Ron in Quincy Senior Member Join Date: May 2010 Location: Quincy, CA. Posts: 1,708	Re: High compression head Different combustion chamber than a stock A head.

09-06-2010, 08:49 PM	#3
Logan Senior Member Join Date: May 2010 Location: Fort Worth, Texas Posts: 1,055	Re: High compression head the heads look the same when sitting on the block. __________________ Cowtown A's

09-07-2010, 08:07 PM	#5
30ccpickup Senior Member Join Date: May 2010 Location: Wakarusa, IN Posts: 928	Re: High compression head May Snyder head came in today and the casting sand pattern seems a little courser then my stock head. I intend to paint this weekend and hopefully the look will smooth out a bit. __________________ http://MODELABASICS.com/ How Things Work on a Model "A" Ford Fordbarners, Feel free to use the pictures on my site to answer questions and create tutorials/tech articles.

09-08-2010, 09:05 AM	#6
austin Junior Member Join Date: May 2010 Posts: 15	Re: High compression head Sponsored Links (Register now to hide all advertisements) Thank you all for your comments and Gar thanks for taking the time to send the two photos. Mine is smooth so it's "likely" that it is a Snyder. I just received the engine and it was "specked" out to have a Snyder HC head. It sure has more "guts" than my old one. Thanks again.

09-08-2010, 09:58 AM	#7
V4F Senior Member Join Date: May 2010 Location: ca. Posts: 2,522	Re: High compression head check compression . rule of thumb is : stock 55# ... 5.5 75# ... 6.0 85# ... steve __________________ V4f

09-08-2010, 12:12 PM	#9
marc hildebrant Senior Member Join Date: May 2010 Location: Cape Cod Posts: 1,128	Re: High compression head Group, Very interesting. I have NO raised casting mark in the water pump area. I do have either a faint 18 or 19 near the front of the head toward number 1 cylinder. Also, the compression is 70 lbs here in "thin air" colorado (5000 ft). I wonder if I have a HC Head ? Marc