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Common Pontiac Displacements and Overbore Displacements.

350

  inches metric
bore 3.8762"  
stroke 3.75"  
overbore 0 0
disp/cyl 44.25 cid 725.16 cc's
displacement 354.02 5.8 litres
new bore size N/A  

350 bored .030 over

  inches metric
bore 3.8762"  
stroke 3.75"  
overbore 0.030  
disp/cyl 44.94 cid 729.59 cc's
displacement 359.62 5.837 litres
new bore size 3.9"  

301 bored .060" over

  inches metric
bore 3.8762  
stroke 3.75  
overbore 0.060  
disp/cyl 45.63 cid 734.02 cc's
displacement 365.06 5.872 litres
new bore size 3.962  

Comments and Suggestions

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© 1998-2010

78blackbird@thepontiactransampage.com
Feel free to drop me a note. * I am looking for some good articles for the third and fourth gen birds. If you have any that you would like to see on this site send them to me and I will post them on my site.     

  • The information in here is just an outline.
  • The author claims no responsibility for the info contained in these pages. 
  • If unsure of any tip or modification seek a professional for the job.
  • In some states this may violate pollution laws
  • Check with your state on the laws.
  • Not affiliated with Pontiac or General Motors