This specification and comparison chart features gasoline engines that are suitable for Flxible Clipper and Visicoach installations. When choosing an engine pay particular attention to the horsepower and torque vs the RPM . Higher torque at a lower rpm is the ideal. These engines will have the power necessary at a higher rpm to climb hills without totally losing it and also have the lugging power needed when pulling under load. Also keep in mind a lower compression ratio means you don't have to worry about detonation that you can't hear with the engine in the rear of the coach. Also you can burn the "Cheap Stuff" These are industrial rated engines and some have sodium filled stainless steel valves with rotators and will do fine burning todays unleaded gas. Some of these engines listed that do not have that feature should have a fuel additive for proper valve lubrication. The Chevy 454 with a compression ratio of 8.5 to 1 is getting up there and you may want to burn mid grade in this engine depending on how you have set the ignition timing . High compression automobile engines are a poor choice. First of all you must burn "High Test" but the main factor is they just won't hold up under the strain. Even the lighter duty engines on the chart will not get you the longevity of the "Big Blocks" A Chevy 350 4 bolt main truck version engine will get you about 90,000 miles if you are lucky and are suitable for a short Clipper only. If you have a 33 ' Clipper or a 34 ' Visicoach pick a big block engine. A 413 Dodge for instance can get you 250 to 300,000 miles if you take care of it properly. Engines built after 1972 generally have less power per cubic inch due to the changes in engine design to comply with the new pollution standards in effect that year. Keep in mind that the big block engines produce more heat than the original FB320 Buick that was in there and you might as well take your radiator to a shop before you put your new engine in and have it worked over. Also you can use a 5 to maximum 7 pound pressure cap. Your radiator guy can advise you on this. If you're driving in a hot climate or will be pulling a tow car you will want to install a misting system on the radiator for emergengy cooling. The chart is by no means complete as to years and engine models and is intended for basic comparisons only. Several versions of the same engine were manufactured in the same year for some of these engines and the ratings are slightly different for each. This chart will be added to and updated.
|
|
|
Carb. | Bore & Stroke |
|
HP @ RPM | Torque @ RPM |
|
| Chevrolet 1970 | V8- 427 | 4 BBL | 4.25 X 3.76 | 8.0 to 1 | 260 @ 4000 | 404 fp @ 2600 | |
| Chevrolet 1970 | V6- 401 | 2 BBL | 4.87 X 3.58 | 7.5 to 1 | 237 @ 4000 | 372 fp @ 1600 | |
| Chevrolet 1970 | V6- 478 | 2 BBL | 5.125 X 3.86 | 7.5 to 1 | 254 @3700 | 442 fp @ 1400 | Sodium Ex. Valves |
| Chevrolet 1971 | V8- 454 | 4 BBL | 4.251 X 4.00 | 8.5 to 1 | 365 @ 3200 | 465 fp @ 3200 | |
| Chevrolet 1972 | V8- 454 | 4 BBL | 4.251 X 4.00 | 8.5 to 1 | 270 @ 4000 | 390 fp @ 3200 | |
| Chevrolet 1973 | V6- 478 | 2 BBL | 5.125 X 3.86 | 7.0 to 1 | 192 @ 3200 | 371 fp @ 1400 | Sodium Ex. Valves |
| Chevrolet 1973 | V8- 350 | 2 BBL | 4.00 X 3.48 | 8.0 to 1 | 160 @ 2400 | 265 fp @ 2400 | 4 Bolt Main Engine |
| Chevrolet 1973 | V6- 432 | 2 BBL | 4.875 X 3.86 | 7.5 to 1 | 190 @ 3200 | 331 fp @ 1600 | |
| Chevrolet 1979 | V8- 454 | 4 BBL | 4.25 X 4.00 | 7.6 to 1 | 245 @ 4000 | 380 fp @ 2500 | |
| Dodge 1971/72 | V8- 361-4 | 2 BBL | 4.12 X 3.58 | 7.5 to 1 | 207 @ 4000 | 335 fp @ 3600 | |
| Dodge 1971/72 | V8- 413-1 | 4 BBL | 4.188 X 3.75 | 7.5 to 1 | 265 @ 4000 | 445 fp @ 2400 | Sodium Ex. Valves |
| Dodge 1971/72 | V8- 413-3 | 4 BBL | 4.188 X 3.75 | 7.5 to 1 | 238 @ 3600 | 407 fp @ 2000 | Sodium Ex. Valves |
| Dodge 1973 | V8- 413-3 | 4 BBL | 4.188 X 3.75 | 7.5 to 1 | 190 @ 3200 | 355 fp @ 2000 | Sodium Ex. Valves |
| Dodge 1974 | V8- 440-1 | 4 BBL | 4.32 X 3.75 | 8.12 to 1 | 225 @ 4000 | 345 fp @ 3200 | |
| Dodge 1974 | V8- 440-3 | 4 BBL | 4.32 X 3.75 | 8.2 to 1 | 235 @ 4000 | 340 fp @ 2400 | |
| Dodge 1976 | V8- 413-3 | 4 BBL | 4.188.X 3.75 | 7.54 to 1 | 175 @ 3200 | 325 fp @ 2000 | Sodium Ex. Valves |
| Dodge 1976 | V8- 440-3 | 4 BBL | 4.32 X 3.75 | 8.2 to 1 | 225 @ 4000 | 330 fp @ 2400 | |
| Dodge 1979 | V8- 440-3 | 4 BBL | 4.32 X 3.75 | 8.2 to 1 | 225 @ 4000 | 330 fp @ 2400 | |
| Ford 1970/71/72 | V8- 361 | 2 BBL | 4.05 X 350 | 7.2 to 1 | 210 @ 4000 | 345 fp @ 2000 | |
| Ford 1970/71/72 | V8- 391 | 4 BBL | 4.05 X 3.97 | 7.2 to 1 | 235 @ 4000 | 372 fp @ 2000 | |
| Ford 1970 | V8- 477 | 4 BBL | 4.50 X 3.75 | 7.5 to 1 | 253 @ 3400 | 415 fp @ 2000 | |
| Ford 1972 | V8- 401 | 4 BBL | 4.125 X 3.75 | 7.5 to 1 | 226 @ 3600 | 343 fp @ 2600 | |
| Ford 1974 | V8- 391 | 4 BBL | 4.05 X 3.79 | 7.2 to 1 | 182 @ 3600 | 321 fp @ 2400 | |
| Ford 1975 | V8- 389 | 4 BBL | 4.05 X 3.78 | 7.2 to 1 | 180 @ 3600 | 302 fp @ 2700 | |
| Ford 1975/76 | V8- 475 | 4 BBL | 4.50 X 3.75 | 7.2 to 1 | 203 @ 3400 | 341 fp @ 2600 | |
| Ford 1976/77 | V8- 460 | 4 BBL | 4.36 X 3.85 | 8.0 to 1 | 230 @ 4000 | 359 fp @ 2600 | |
| Ford 1977 | V8- 475 | 4 BBL | 4.50 X 3.75 | 7.2 to 1 | 212 @ 3400 | 378 fp @ 2200 | |
| Ford 1979 | V8- 370 | 4 BBL | 4.05 X 3.59 | 8.0 to 1 | 204 @ 3600 | 311 fp @ 2800 | |
| Ford 1980 | V8- 460 | 4 BBL | 4.36 X 3.85 | 8.0 to 1 | 212 @ 4000 | 339 fp @ 2400 | |