ConcoursMustang Forums

1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1970 Mustang => Topic started by: razrbak on October 19, 2014, 07:05:10 PM

Title: Early '70 Dearborn Breather Cap?
Post by: razrbak on October 19, 2014, 07:05:10 PM

I'm trying to figure out what is the correct oil breather cap for my car.  It's is a 1970 Mach 1, 351W-2v.  Built at Dearborn on 09/24/69.  Marti report says nothing about emissions.  I've seen several types on the different parts vendors below.  Thanks for the help everyone.

Black push on.
http://www.cjponyparts.com/scott-drake-oil-cap-black-push-on-style-with-hose-tube-1965-1970/p/OC14/ (http://www.cjponyparts.com/scott-drake-oil-cap-black-push-on-style-with-hose-tube-1965-1970/p/OC14/)
(http://images.cjponyparts.com/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/o/c/oc14.jpg)

Black twist on with pcv valve elbow. They have another one like this but in chrome.
http://www.cjponyparts.com/scott-drake-oil-cap-black-twist-on-style-with-pcv-elbow-1968-1971/p/OC16/ (http://www.cjponyparts.com/scott-drake-oil-cap-black-twist-on-style-with-pcv-elbow-1968-1971/p/OC16/)
(http://images.cjponyparts.com/media/catalog/product/cache/1/small_image/200x/9df78eab33525d08d6e5fb8d27136e95/o/c/oc16.jpg)

I've also seen a lot of pictures of 70 mach 1s with this style cap..  But this one is listed as a 72-73 (and for a 351C)
http://www.nationalpartsdepot.com/store/products/cap_oil_filler_and_breather_chrome-149813-1.html (http://www.nationalpartsdepot.com/store/products/cap_oil_filler_and_breather_chrome-149813-1.html)
(https://www.nationalpartsdepot.com/store/images/products/6766-10.jpg)

Title: Re: Correct Breather Cap?
Post by: J_Speegle on October 19, 2014, 09:43:59 PM

Quote from: razrbak on October 19, 2014, 07:05:10 PM

I'm trying to figure out what is the correct oil breather cap for my car.  It's is a 1970 Mach 1, 351W-2v.  Built at Dearborn on 09/24/69.  Marti report says nothing about emissions.  I've seen several types on the different parts vendors below.  Thanks for the help everyone.

Very early car you have there

Looked through my picture and it appears that your #2 is the correct one for your application #3 was used on the 351 2V Cleveland applications

Hope this helps

Both examples are fairly early 70 H code Dearborn cars ( 0F10251x xxx & 0F11188x)

(http://www.concoursmustang.com/forum/gallery/2/6-191014194246.jpeg)


(http://www.concoursmustang.com/forum/gallery/2/6-191014194320.jpeg)

Title: Re: Correct Breather Cap?
Post by: razrbak on October 19, 2014, 10:43:47 PM

Thank you very much Jeff!