1965 400 Ci. - Pontiac GTO Forum
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post #1 of 4 (permalink) Old 05-17-2009, 07:32 PM Thread Starter
 
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1965 400 Ci.


Was the 400 cubic in. engine available in the 1965 GTO.
Thanks,
Rich
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post #2 of 4 (permalink) Old 05-17-2009, 07:52 PM
 
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Quote:
Originally Posted by skippers_1 View Post
Was the 400 cubic in. engine available in the 1965 GTO.
Thanks,
Rich
400 CI wasn't introduced until the 1967 model...1965 should have a 389 CI
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post #3 of 4 (permalink) Old 05-18-2009, 08:18 AM
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The 389 became a 400 when it was overbored .060". A money-saver is to use std. 400 pistons in a "sixty-over" 389 block . So, you COULD have a '65 "400"........it just didn't come that way. My '65 has a 394, and my '67 has a 406!! The above post is correct, though.......400's made their entrance in the 1967 model year. The main improvement was the new cylinder head design.
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post #4 of 4 (permalink) Old 05-18-2009, 08:31 AM Thread Starter
 
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400 Ci.

Quote:
Originally Posted by geeteeohguy View Post
The 389 became a 400 when it was overbored .060". A money-saver is to use std. 400 pistons in a "sixty-over" 389 block . So, you COULD have a '65 "400"........it just didn't come that way. My '65 has a 394, and my '67 has a 406!! The above post is correct, though.......400's made their entrance in the 1967 model year. The main improvement was the new cylinder head design.
Thanks, That`s what I thought but was not sure.
rich
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

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