SAAC Forum

There are 65-66 Mustangs with 8" rears that have C4OW axles, an
yes they are totally interchangeable with 8" or 9" rears.

I use Echlin CS 756 in my K-Code
excellent replacement, there sold
at Napa.

Relicdog

If the engine is not from a Shelby, you could check on the Hipo Mustang web site, K-Code owners would also be excited to pair the correct vin. stamped block to their Kar, although not all K-Code blocks were vin. stamped.

Relicdog

Excellent info, that's why I visit this site, the knowledge some people have on this forum is incredible.

Relicdog

Could be a service replacement head for a Hipo, I also read some where can't remember exactly that Ford started producing parts for a 68 Hipo but the 390 sold so well that they dropped the Hipo.

Relicdog

Before his first post was edited he mentioned #18 on a hipo head.

Relicdog

I've never seen a Hi-Po head with 18 on it.

Relicdog

Call Fred he's the man with the Hi-Po parts.
661-251-2362

Relicdog

I have one of Fred's 3939s rebuilt pumps on my K-Code
For a number of years now, it works perfect. He also has
an significant stock of Hi-Po parts, his knowledge on Fords
seems endless.

Relicdog

I use VR1 10-30 racing oil an I add Cam Shield every oil change.

Relicdog

Have you tried adding ( friction modifier ) may solve your problem.

Sent you a PM

Do these valves have AC spark plug stamped on them, hard to
tell from the picture.

Pm sent.

I to have purchased many parts from
Fred, incredible knowledge an always
willing to help.

Relicdog