1969 Mustang Engine Information – 302 cubic inch V-8 (4.9 L Windsor V8 + & Boss V8)
The 302 Windsor V8 + A Big Welcome To The Boss 302
The 302 cubic inch engine was introduced in 1968 to the Mustang and continued to be offered in 1969. The now revised 302 cu in (4.9 L) Windsor engine had 210 hp. In addition, a number variety of performance packages were introduced that included names like the Mach 1, the Boss 302 and the Boss 429. The two Boss models were to homologate the engines for racing.
After a very disappointing 1968 racing season Ford designed a new engine specifically for F.I.A. Trans Am competition in 1969, the Boss 302. The engine was introduced on April 17, 1969. About 8,600 Boss 302 engines were built. The Boss 302 block was essentially the next generation of 289 High Performance hardware, but features a forged steel crankshaft, 4-bolt main caps, and screw-in freeze plugs. These modifications were developed as part of the 302 Tunnel Port design. Street versions used connecting rods similar to the 289 Hi-Po while the Trans Am version used heavier 7/16″ bolts.
The real magic of the Boss engines came from the canted-valve Cleveland cylinder heads. While the Boss 302 was normally considered a 302 with 351 Cleveland heads, these canted-valve heads were used first on the Boss before the rest of the Cleveland was developed. As fitted to the Boss, the heads feature steel spring seats, screw-in rocker studs, pushrod guide plates, and adjustable rocker arms. The Boss 302 and 351C-4V head casting were the same except for a minor difference in water passages. Camshafts were quite similar to the 289 Hi-Po. Due to the larger Cleveland-style heads, the Boss 302 weighs somewhat more than the normal 302, tipping the scales at 500 lbs.
The street version was conservatively rated at 290 HP @ 5800 RPM.During the ’69 Trans Am season the racing engines were putting out 470 bhp at a 9,000 rpm redline.
210 or 225 (HO) hp at 4400 RPM and 158 ft/lbs torque at 2400 RPM
Non H.O.’s = 1 – 5 – 4 – 2 – 6 – 3 – 7 – 8
Engine Torque Specifications
All torque specifications provided in this table are those recommended by FORD. If you use special bolts, follow the torque specifications provided by the manufacturer. I recommend that you use the 3 step torque technique where you torque down the bolts in three equal steps. Once you have reached the maximum recommended torque setting, go around one more time. Do not torque in a circular pattern. Always torque cross to cross.
Crank cap bolts
Rod end caps
Exhaust manifold bolts
Upper intake on EFI
A/C Compressor mounts
Motor mounts to engine
Trans to bellhousing
Flywheel to Crankshaft
Oil pan bolts
Valve cover bolts
Carburetor mount bolts
Oil pump mounting bolts
Trans. inspection plate
Water pump bolts
Clutch Pressure plate
Upper cam gear bolt
Rocker arm bolts
Camshaft thrust plate
Crankshaft Bearing Journal Specifications (302)
Main Bearing Journal (inches)
2.2482 – 2.2490
0.0005- 0.0024 Except #1 bearing which is 0.001- 0.0018