horsepower specs to a 1970's motorhome with a 440?

Answer 1

I own a shop, but I don't have the books here at home, but I would go out on a limb and say 325 horses. This was a high torque engine, and torque is what makes a vehicle go. This engine was under rated, and made more horses than what the advertised horsepower was. Even though it was rated at 325 it was more like 425 or a little better depending on if it was a four barrel carb or not. If someone will check the compression ratio on these, they will find out the compression was not lowered until 1971. 1970 was the last year of the high compression engines.
Glad to help out, Good luck!!!

Answer 2

the motorhomes used different cylinder heads and intake and exhaust manifolds than the passenger car 440. motorhomes had water cooled manifolds and a very low compression ratio. 7.8 to 1 generated 170 horsepower and 225 ft. lbs torque. they were much more durable than the car 440.

Answer 3

U-440 in³ (7.2 L) RB V8: Available in Magnum 4-barrel carbureted form (375 bhp) 1970-1971
V-440 in³ (7.2 L) RB V8 Six-Pack (3 × 2-barrel carburetors and 390 bhp/490 ft.lbf) 1970

The 440 engine was introduced in 1966, the same year the 426 engine was replaced by the same-displacement, legendary 426 Hemi "elephant engine." It was used not only for performance, but also for luxury yachts such as the Imperial.
The high performance 440 was introduced in the 1967 GTX and R/T models. In 1968 the 383 Road Runner and Super Bee models were introduced, starting the biggest performance surge since the early 1960s. In 1969, the first 440-6 barrel engine package was produced with special rods, crankshaft, timing chain, camshaft, valve springs and intake system. This package was continued in 1970 and 1971.

In 1971, the 440-6 barrel and the Hemi were the last truly high performance cars produced. One of the greatest moments in the 'B' engine's history was its return to Grand National racing. On July 4, 1971, four cars with 426 cubic inch versions of the 440 with ported 440 heads were entered in the Daytona Grand National race, and they finished 1-2-3-4. Performance and reliability have always been trademarks of the 'B' engine family.


Fuel Size Cyls Carb Exh. Compr. Gross HP Gr Torque Available in
Reg 225ci 6 1v 1 8.4: 1 145 215 Coronet - standard
Reg 318 8 2v 1 9.2:1 230 340 Coronet - standard
Reg 383 8 2v 1 9.2:1 270 390 Coronet (opt.), Polara (std)
Prem 383 8 4v 2 10.0:1 325 425 Coronet, Polara (optional)
Prem 383 8 4v 1 10.0:1 325 425 Polara - optional
Prem 440 8 4v 2 10.1:1 350 480 Polara - optional
Prem 440 8 4v 2 10.1:1 375 480 Polara - optional
1969
Type Size Cyls Carb Exh. Compr. Gross HP Gr Torque Available in
E24 225ci I6 1v 1 8.4: 1 145 215 Fury, Belvedere, Coronet
E44 318ci V8 2v 1 9.2: 1 230 340 all but pursuits
E61 383ci V8 2v 1 9.2: 1 290 390 Fury/Pol/Bel/Cor
E63 383ci V8 4v 2 10.0: 1 330 425 Bel/Cor pursuit, Fur/Pol
E85 440ci V8 4v 2 10.0: 1 360 480 Fury/Polara
E86 440ci V8 4v 2 10.1: 1 375 480 Fury/Polara pursuit
1970
Type Size Cyls Carb Exh. C/R Gross HP Gr Torque Available in
E24 225ci I6 1v 1 8.4: 1 145 215 Fury, Belvedere, Coronet
E44 318ci V8 2v 1 8.8: 1 230 340 all but pursuits
E61 383ci V8 2v 1 8.7: 1 290 390 Fury/Pol/Bel/Cor
E63 383ci V8 4v 2 9.5: 1 330 425 Bel/Cor pursuit, Fur/Pol
E85 440ci V8 4v 2 9.7: 1 360 480 Fury/Polara
E86 440ci V8 4v 2 9.7: 1 375 480 Fury/Polara pursuit
1971
Type Size Cyls Carb Exh. C/R HP (G/N) Torque Available in
E24 225 I6 1v 1 8.4: 1 145/110 215/185 Fury, Satellite, Coronet
E44 318 V8 2v 1 8.6: 1 230/155 320/260 all but pursuits
E57 360 V8 2v 1 8.7: 1 255/175 360/295 Fury, Polara
E61 383 V8 2v 1 8.5: 1 275/190 375/305 Fury/Polara/Satellite/Coronet
E63 383 V8 4v 2 8.5: 1 300/250 410/326 Sat/Cor pursuit, Fury/Pol
E85 440 V8 4v 1 8.8: 1 335/220 460/350 Fury, Polara
E85 440 V8 4v 2 8.8: 1 335/250 460/380 Fury/Polara
E86 440 V8 4v 2 9.5: 1 370/305 480/400 Fury/Polara pursuit only
1972
Type Size Cyls Carb Exh. C/R net HP Torque Available in
E24 225ci I6 1v single 8.4: 1 110 185 Fury, Satellite, Coronet
E44 318ci V8 2v single 8.6: 1 150 260 all exc. pursuits
E57 360ci V8 2v single 8.7: 1 175 285 Fury, Polara
E64 400ci V8 2v single 8.2: 1 190 310 Fury/Pol/Sat/Cor
E68 400ci V8 4v dual 8.2: 1 250 335 Sat/Cor pursuit, Fur/Pol
E85 440ci V8 4v dual 8.2: 1 230 335 Fury/Polara
E86 440ci V8 4v dual 8.2: 1 285 380 Sat,Coronet,Fury,Polara purs.
1976
Type Size Cyls Carb Exh. Notes Net HP Net Torque Available in
E25 225 I6 1v 1 100@3600 170@1600 Valiant, Fury (not wagon)
E44 318 V8 2v 1 150@4000 255@1600 Valiant, Fury (not wagon)
E57 360 V8 2v 1 170@4000 280@2400 Fury, Gran Fury (GF), Newport
E58 360 V8 4V 2 220@4400 280@3200 Valiant only!
E63 400 V8 2V 1 175@4000 300@2400 Fury, GF, Newport
E64 400 V8 4V 1 lean burn 240@4400 305@3200 Fury, GF, Newport
E68 400 V8 4V 2 240@4400 325@3200 Fury, GF, Newpt - no wagons
E85 440 V8 4v 1 205@3600 320@2000 Gran Fury Wagon
E86 440 V8 4v 2 dual cats 255@4400 355@3200 Gran Fury (except wagons)

* Input by Allpar from information sent by Lt. Simes of the Montgomery Township Police Department, Montgomeryville, PA.