Me too but I'm sure the Ponbtiac engineers had all of that factored in. Bear in mind that the car was only meant to run down the drag track a quarter mile at a time. This was the rationale for the aluminum headers; had the car been for the street or circle racing they could not have used aluminum as it would have deformed in use from excessive heat - that was the explanation Pontiac gave at the time. 

gparis7 wrote:

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since 1983 wrote:

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did any one ever hear about the swiss cheese frames on the 63 race cars from what i had read , they had round holes drilled in the frame to be lighter.

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Here's  a swiss cheese car I saw at Ames in 2010; prior to restoration it had been modified to an altered wheelbase race car.  One pic shows the holes in the frame, and the other shows the factory header. There was a y pipe for the single muffler installed at the factory for street use; the factory aluminum headers were uncapped for the track. 

 

 

The car above , fully restored, was the car below back in the day. 

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Some 50s Chevies and other GM makes. 

-- Edited by gparis7 on Sunday 5th of August 2012 07:54:19 PM

A handful of neat and Fords and Mopars at Syracuse.

A fixer -upper 67 Chevelle 2 dr post at Syracuse.

If I recall correctly, many of these cars broke the frames while racing.

gparis7 wrote:

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since 1983 wrote:

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did any one ever hear about the swiss cheese frames on the 63 race cars from what i had read , they had round holes drilled in the frame to be lighter.

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Here's  a swiss cheese car I saw at Ames in 2010; prior to restoration it had been modified to an altered wheelbase race car.  One pic shows the holes in the frame, and the other shows the factory header. There was a y pipe for the single muffler installed at the factory for street use; the factory aluminum headers were uncapped for the track. 

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