Oiling System Security
The 289 High Performance engine was fitted with the same type of oil pump, pickup, and pan found with the 2V/4V engines. When you rebuild the Hi-Po, opt for a high-volume oil pump for improved lubrication at high revs. Install a new pickup as well.
Although it is rumored all 289 High Performance engines had screw-in oil-gallery plugs, not all of them did. When you find press-in plugs, replace them with screw-in plugs when the block is being machined. Make sure your machine shop does a thorough job of cleaning the block and all of the passages afterward.
When you rebuild, use a high-volume...
When you rebuild, use a high-volume oil pump and a new pickup screen. Make sure the crankshaft counterweights clear the oil pump by at least .050 inch.
Oil-gallery passages at the...
Oil-gallery passages at the front of the block behind the timing set should receive screw-in plugs for safety. Do this during the machining process and make sure all passages are hospital clean.
This is the distinctive 289...
This is the distinctive 289 High Performance cast-iron exhaust header, which looks more like a shorty header than an exhaust manifold. This manifold is similar to the '69-'70 351W exhaust manifold.
Two Great Hi-Po Books
We recommend two terrific sources for 289 High Performance engine information. Mustang & Ford Small-Block V8-1962-'69 by Robert Mannel, published by RPM Press, is the best book we've ever seen on the small-block Ford. We're talking hundreds of pages of photos, text, and details on all '62-'69 221/260/289/302/351W small-block V-8s, including the '63-'67 289 High Performance. For more information, contact RPM Press, Dept. MM, 340 Clicktown Rd., Church Hill, TN 37642; e-mail bobmannel@compuserve.com.
Another good book is The 289 High Performance Mustang by Tony Gregory, available from Marv's Mustangs, Dept. MM, 12600 Leatherwood Ct., Raleigh, NC 27613; 919/848-6786; www.hipomustang.com. It has plenty of information related to 289 High Performance Mustangs. Register your '65-'67 289 High Performance Mustang while you're at it.
This cylinder head looks different...
This cylinder head looks different because it's a factory experimental casting used on the 5F07K100148 car.
Both cylinder heads have this...
Both cylinder heads have this XE-118715 casting number, indicating experimental engine pieces. Chamber, valve, and port sizes were the same as every other Hi-Po casting we've seen.
We discovered these stampings...
We discovered these stampings (experimental tracking numbers) in the end of each cylinder head.
The unique nature of the Hi-Po...
The unique nature of the Hi-Po head is apparent here: valvespring stability pockets and screw-in rocker-arm studs. This is testimony to the durability of those cast-iron rocker arms. The high-revving Hi-Po was fitted with them from 1963 to 1967. Rail-style rocker arms used from May 8, 1966 forward were common only to the 2V and 4V engines.
This is the Autolite dual-point...
This is the Autolite dual-point distributor. There were two basic versions: the early one with an oiling port and the version shown here without one. Early versions were used in 1963-1964, stamped with C3OF and C4ZF part numbers. None was ever fitted with a vacuum advance.
We found this Autolite 4100...
We found this Autolite 4100 on top of Art's Hi-Po engine. It has the hot-idle compensator, which makes it incorrect for a Hi-Po application. It does, however, have the manual choke. It also has the larger 1.12-inch venturis and 191/416-inch throttle bores, making it 600 cfm. From a correctness standpoint, it isn't the right carburetor for a Hi-Po.
Here's the larger Hi-Po alternator...
Here's the larger Hi-Po alternator pulley at 371/48 inches. It also takes a longer belt. Generators had a 4.32-inch-diameter pulley.