Ok, couple of questions about 351W cylinder heads.
As I understand it, 69-74 351W heads have larger intake and exhaust valves than 75-77 heads. On the bottom of the heads I have is a p/n DOOE......does this mean 1970?
(YES IT DOES)
I don't have a mic/caliper at the house so I use a regular ol' measuring tape and here's what I found. Intake measured about 1 7/8" and exhaust measured about 1 5/8". I'm guessing that I have the earlier heads.
Secondly, I'll be running either 10.2:1 or 10.7:1 compression ratio depending on whether I use thick or thin head gaskets. Which gasket should I use if I want to run 97 Octane pump gas and occasionally run something higher?
(10.7-1 is fine if you can get 97+ octane fuel)
Last but not least, if I have these heads rebuilt, should I have hard valve seats put in them and would you recommend a 3 angle valve job?
(A 3 angle valve job is standard now a days, and hardened seats are the way to go)
Thanks for all the suggestions and expert advice. I love this site and have told several friends who also own Mustangs about it.
You're welcome, sorry about the impersonal way I replied to your questions, but it seems to work out better for me. Welcome to M&M, the best Ford site on the net! Post often and you won't be disappointed.
Melissa's '66 http://content.communities.msn.ca/isapi/fetch.dll?action=show_photo_index&ID_Community=Tomsdragpix&ID_Topic=1&ID_Message=27
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