Engine / Transmission query - Pontiac GTO Forum
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post #1 of 3 (permalink) Old 06-30-2013, 01:06 PM Thread Starter
 
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Engine / Transmission query

I've been looking around Ebay for a 400 to put in my project. Some of them mention whether they were linked to a manual or an automatic. Does it really make a difference? I thought if you were running an automatic you used a torque converter and if you were using a clutch you just intall the proper flywheel. Your thoughts?
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post #2 of 3 (permalink) Old 06-30-2013, 06:33 PM
 
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If you're restoring a car and looking for correct block codes, it matters.

If it's not a "matching" question, you have a lot of flexibility!

If you're installing an automatic, replace the flywheel with the proper flexplate.

If you're running a manual trans, verify that the crank has been drilled to accept the pilot bushing.

Most Pontiac cranks have a stepped hole to accept the pilot bearing/bushing.

Also; if you get a manual trans engine, make sure the old pilot bushing has been removed before you re-assemble your engine.
You want to avoid this issue:https://www.gtoforum.com/f50/pilot-be...k-crank-25621/

1968 Pontiac GTO
1983 Pontiac Bonneville (G) wagon
2008 Pontiac G8 base
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post #3 of 3 (permalink) Old 06-30-2013, 08:34 PM Thread Starter
 
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Ya, I can't afford 'numbers matching' ;-)

Just checking as I know little to nothing about Pontiac engines and was puzzled by the 'automatic' comment.

Thanks for the response!
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

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