Road Tests Real world tests of Mustang BOSS 429 vs Demon 340

0-60mph

1/4 mile

Differences What are the advantages of each

Default view of Ford Mustang BOSS 429

Reasons to consider the
Ford Mustang BOSS 429

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More torque 450 ft-lb @ 3,400 RPM vs 340 ft-lb @ 3,200 RPM More than 30% stronger engine from a stand-still; more acceleration power
Faster to 60mph 7.1 s vs 7.8 s Around 10% faster to 60mph
More powerful engine 374 HP @ 5,200 RPM vs 275 HP @ 5,000 RPM More than 35% stronger engine
Faster in the quarter mile 14 s vs 14.56 s Around 5% faster at the drag strip
Bigger engine 7,030 cc vs 5,572 cc More than 25% bigger engine
Better power-to-weight ratio 9.44 lb/hp vs 12.19 lb/hp Around 25% better power-to-weight ratio
Front view of Dodge Demon 340

Reasons to consider the
Dodge Demon 340

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Slightly lighter curb weight 3,353 lb vs 3,530 lb More than 5% lighter curb weight; less inertia to overcome when accelerating

Specifications Full list of technical specs

general

Mustang BOSS 429  vs
Demon 340 
Brand Ford Dodge
Price 4,740 3,400
Year 1969 1971

power & handling

Power-to-weight ratio 9.44 lb/hp 12.19 lb/hp
Maximum hp 374 HP @ 5,200 RPM 275 HP @ 5,000 RPM
Maximum torque 450 ft-lb @ 3,400 RPM 340 ft-lb @ 3,200 RPM
Steering system Rack and pinion Rack and pinion

suspension, wheels & brakes

Front brakes Disc Disc
Rear brakes Disc Disc
Front wheels 381/? 178 356/? 140
Rear wheels 381/? 178 356/? 140

physical dimensions

Curb weight 3,530 lb 3,353 lb
Width 71.8 in 71.6 in
Length 187.4 in 192.5 in
Wheelbase 108 in 108 in

road tests

Mustang BOSS 429  vs
Demon 340 
1/4 mile 14 s 14.56 s
0-60mph 7.1 s 7.8 s

transmission

Gearing Traditional Traditional
# of gears 4 3

engine

Displacement 7,030 cc 5,572 cc
Cylinders V8 V8
Fuels
Gas
Compression ratio 10.5:1 5.1:1
Bore/stroke 4.36 in / 3.59 in 4.04 in / 3.31 in
Ford Mustang BOSS 429
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Dodge Demon 340
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