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70blackfish

10-09-2012 03:38 PM

69 GMC straight 6...how to tell what size it is?

It's a 6. And it has hei distributor ? What ci?
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john	10-09-2012 04:31 PM

Re: 69 GMC straight 6...how to tell what size it is?

2 Attachment(s)

This should help.

Shaky

10-09-2012 05:57 PM

Re: 69 GMC straight 6...how to tell what size it is?

The above combined with the below might help:

http://www.inliners.org/casting/numbers.html

da-burb

10-09-2012 07:57 PM

Re: 69 GMC straight 6...how to tell what size it is?

take note of the fuel pumps in the pictures above, behind the motor mount is 292 only. In front of the motor mount is 250 and smaller.

70blackfish

10-09-2012 11:32 PM

Re: 69 GMC straight 6...how to tell what size it is?

I think its a 250ci.......

thanks

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