What size engine came with the 1968 Two Door Convertible?

Asked by Apr 28, 2008 at 10:43 PM about the 1968 Pontiac Bonneville

Question type: General

It looks like a big block V-8 but i want to know what the actual size is?

11 Answers

145

you need to check the vin#, my grandfathers 67 had a 440.

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45

A 68 bonne more than likely had a 400 or possibly a 389

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85

I would go for the 389-400 as well. Less likely would be a 421, or a later 455

85

Pontiacs do not come with 440's. That is a Mopar engine

85

Aww, hell. I don't don't if the 428 was available in '68, though

10

I have one....Mine has a 428. It has the numbsers 428 on the driver and passenger side of the car, right behind the front wheels. Mine is a convertable...hope this helps

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10

They came with a 400 and a 428.

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400ci same with a 68 GTO

I want to know the length of the seats.

Is there a dual quad set up for that 428

Not from the factory.

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