1969 Mercury Cyclone 428 CJ
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Fast Facts
Engine: Cobra Jet 428 bored 0.010 inch and upgraded to Super Cobra Jet-spec LeMans connecting rods and forged pistons yielding a 10.0:1 compression ratio. The owner chose a Comp cam measuring 218/224 duration and 0.513/0.520 lift, a set of Edelbrock Performer RPM cylinder heads, and a matching Performer RPM intake manifold. The long-block is topped off with a Holley 750-cfm carb. This CJ makes 508 hp at 5,900 rpm and 514 lb-ft at 3,900 rpm.
Transmission: C6 ’69 date code. It was beefed up with extra clutches, a heavy-duty valvebody, and a 3,000-stall TCI Breakaway torque converter.
Rearend: The 9-inch is original, upgraded with a Detroit Locker differential, 3.50:1 gears, and 31-spline axles.
Suspension: The underpinnings of the car are mostly stock, but Bruce tells us the addition of aluminum cylinder heads and intake manifold forced him to install front springs that would have originally been under a 351-powered car.
Brakes: Stock, front discs and rear drums
Wheels/Tires: Up front are BFGoodrich 215/70R15 tires on 15×8 Cragar wheels, while 275/60R15 tires on 15×10 wheels.
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