I have a 67 coupe with a straight 6. the numbers on the block are

C6DE
6015B

What size 6 is it?

Thanks in advance

 

if it's original i think it's a 200ci

 

Like cdeck said, if it's the original engine it's a 200ci, the 170 was used in the 641/4 and the 250 was used in 69. Also just an easy reference, if the cylinder head and log intake are cast all in one piece it's a 170 or 200, if the intake is a separate 4 arm manifold than its a 250 or larger.

 

it's ot in the list of fordsix.com
http://www.fordsix.com/tech/misc/casting_numbers.php

so you might want to email him (see end of page) with details and pictures.
He can add yours to the list then if you want

Kalli

 

1966-67 or 68-69 200.

 

thanks guys. I sold the car and the guy buying wanted to know the engine size, 200 or 250. I told him i thought it was a 200 but not 100% sure. wife told me I could only have one pony in the stable, time to get back to working on the 65.......