289 hipo?
289 hipo?
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Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
Do they have screw-in rocker studs? Of course, somebody could have added screw-in studs later.
The clincher for identifying Hi-Po heads is the valve spring pockets. They are cast into the head, and serve to eliminate valve spring "walk". Here's a pic of Hi-Po heads:
http://mustangandfords.com/techartic...mage_large.jpg
I'm not too sure about that casting number. The 289 Hi-Po was built from '63 to '67, and that's a 1968 casting number...when the 302 was introduced. But I have seen overlap on casting numbers before, so that's not set in stone.
The clincher for identifying Hi-Po heads is the valve spring pockets. They are cast into the head, and serve to eliminate valve spring "walk". Here's a pic of Hi-Po heads:
http://mustangandfords.com/techartic...mage_large.jpg
I'm not too sure about that casting number. The 289 Hi-Po was built from '63 to '67, and that's a 1968 casting number...when the 302 was introduced. But I have seen overlap on casting numbers before, so that's not set in stone.
