1955 front cross mount behind water pump

[Ronald R.]

When i put the mount behind water pump it hits the rectangular casting hump on the head?? any help appreciated thanks RDR

[Wayne L.]

Re: 1955 front cross mount behind water pump

Is the head a Tonawanda casting?

[Ronald R.]

Re: 1955 front cross mount behind water pump

Is the head a Tonawanda casting?

I will check, it is dated and cast correctly

[Joe R.]

Re: 1955 front cross mount behind water pump

Ronald,

Here's a pic of a 55 pad that shows the motor mount behind the water pump. Unless your trying to put the motor mount on backwards it is impossible to have interference with the head.

JR

[Ronald R.]

Re: 1955 front cross mount behind water pump

no casting info is viasble

[Ronald R.]

Re: 1955 front cross mount behind water pump

This side is easy!! The casting hump on the other side is about 1/8" to high for the mount to fit, possible just a casting flaw as the other head has a smaller hump. thanks RDR

[Ronald R.]

Re: 1955 front cross mount behind water pump

Here are some better pictures. It might work if I switch the heads to the opposite side. thanks RDR

[Dan P.]

Re: 1955 front cross mount behind water pump

The Tonaowanda head the front rectangular pad is thicker.Try and measure how much it sticks out .I think I have a 55 head to compare it to .

[Jim D.]

Re: 1955 front cross mount behind water pump

Corvettes used Flint heads that had the front casting machined down to approx. .060 for this exact reason. Tonawanda heads, which you have, were used in other applications that didn't require the machining process. Here's a pic. of my 1960. You can easily see that a Tonawanda head wouldn't work.

[Ronald R.]

Re: 1955 front cross mount behind water pump

I switched heads from one side to the other and all fit well. thanks for the help. RDR

Corvettes used Flint heads that had the front casting machined down to approx. .060 for this exact reason. Tonawanda heads, which you have, were used in other applications that didn't require the machining process. Here's a pic. of my 1960. You can easily see that a Tonawanda head wouldn't work.

[Mike M.]

Re: 1955 front cross mount behind water pump

if the head is a tonowanda casting, the judges usually detect the "sand cast" appearance of the rectangle(vs the broached surface of the rectangle on a flint head).you could also pull the valve cover and if the casting date year is two numerics, then its a tonawanda head. mike