362:
29:
335: in (103.2 mm × 95.3 mm). It shared most of the 389's tooling and up to 120 of its parts. This degree of commonality enabled it to be produced on the same lines as the V8, allowing substantial cost savings. The Trophy 4 weighs about 470 lb (210 kg), as compared to the 650 lb (290 kg) V8 it was based on.
411:
further damped by the
Tempest's unusual drivetrain that distributes these forces through the torque tube to the rear-mounted transaxle. The timing chain in the Trophy 4 was originally the same as the 389, but was prone to stretch and break from engine vibration; a special high-strength version was developed as a replacement.
410:
A downside of the Trophy 4 is engine vibration, as an inline four-cylinder engine suffers from inherent secondary imbalance resulting from its 180 degree crankshaft. The Trophy 4 is cushioned by flexible rubber engine mounts designed to isolate the engine from the rest of the car, and its forces are
358:; and 155 hp (116 kW) at 4,800 rpm and 215 lb⋅ft (292 N⋅m) at 2,800 rpm with the optional four-barrel carburetor and automatic transmission. A "power pack" option for the 1962 four-barrel carburetor increased rated power to 166 hp (124 kW).
561:
403:
inch (16 mm) solid rotating shaft, inside the pressed steel square torque tube. Uniquely, the shaft is also bent downwards into a curve, which has the effect of making the
354:
using regular gas, and 120 hp (89 kW) with premium); 130 hp (97 kW) with regular gas (and 140 hp (104 kW) with premium), as fitted with
361:
389:
runs at engine speed, rather than the transmission output speed, it runs at a higher speed and lower torque than a conventional driveshaft for a
407:
of such a flexible shaft higher than the engine's maximum rpm. The curve of this flexible, thin driveshaft earned it the nickname "rope drive".
603:
307:
in 1961. Its 194.43 cu in (3.2 L) displacement is precisely half of the 389, with an identical bore and stroke of
342:, then the head of a design team responsible for the birth of the Tempest line, the Trophy 4 produces 110 hp (82 kW) (
618:
414:
The Trophy 4 was dropped from the
Tempest line when it upgraded from a compact to an intermediate for the 1964 model year.
539:
613:
514:
53:
433:
428:
201:
273:
for model years 1961 through 1963. Created from one bank of
Pontiac's powerful 389 cu in (6.4 L)
608:
623:
355:
159:
266:
83:
49:
492:
351:
98:
88:
44:
438:
275:
346:) at 3,800 rpm and 190 lb⋅ft (258 N⋅m) at 2,000 rpm with a single-barrel
423:
390:
469:
366:
304:
280:
213:
131:
404:
270:
238:
196:
597:
339:
108:
579:
28:
464:
382:
287:, playing off the racing success that had earned the 389 V8 engine the nickname
262:
91:
562:"What's It Worth? 1962 Pontiac Tempest "Trophy 4" Convertible ..A Johnny D Gem"
386:
374:
347:
343:
300:
179:
154:
540:"The New Sweet Running Trophy 4 Engine from Pontiac Performance Specialists!"
378:
519:
189:
385:, giving the car a near-perfect 50-50 front-rear weight balance. As the
223:
360:
172:
303:
created from the right bank of the 389 V8 for the debut of the
299:
The Trophy 4 engine is a short-stroke, 45-degree inclined
279:, its only application was in the first generation
237:
232:
222:
212:
207:
195:
185:
171:
166:
153:
130:
107:
97:
82:
77:
69:
59:
43:
38:
21:
473:. Popular Science Publishing Co. pp. 53–58.
555:
553:
515:"Cut-Down Engine of the Week: Pontiac Trophy 4"
486:
484:
482:
480:
393:car. This allows it to be an unusually small
8:
534:
532:
530:
508:
506:
458:
456:
454:
261:) is a 194.5 cu in (3.2 L)
27:
18:
16:Reciprocating internal combustion engine
450:
338:The brainchild of auto industry legend
465:"Pontiac Tempest: Radical New Compact"
513:Martin, Murilee (20 September 2017).
291:after just two years of competition.
228:190–215 lb⋅ft (258–292 N⋅m)
7:
103:194.5 cu in (3.2 L)
14:
463:Fermoyle, Ken (September 1960).
218:110–166 hp (82–124 kW)
560:Baumann, Johnny (3 June 2021).
283:. It was dubbed by Pontiac the
491:LaChance, Dave (August 2010).
381:connected to the engine via a
1:
604:Products introduced in 1961
546:. December 1960. p. 4.
493:"1961–'63 Pontiac Trophy 4"
33:1962 Pontiac Tempest LeMans
640:
434:Pontiac straight-8 engine
429:Pontiac straight-6 engine
243:470 lb (210 kg)
26:
377:features a rear-mounted
126: in (103.2 mm)
265:engine produced by the
251:Pontiac Trophy 4 engine
149: in (95.3 mm)
22:Pontiac Trophy 4 engine
566:Vintage Auto Appraisal
370:
356:automatic transmission
267:Pontiac Motor Division
619:Straight-four engines
584:Classic Car Catalogue
364:
263:inline four-cylinder
497:Hemmings Motor News
352:manual transmission
178:Single or 4-barrel
89:Naturally aspirated
614:Slant-four engines
371:
439:Pontiac V8 engine
253:(also called the
247:
246:
162:2 valves per cyl.
631:
588:
587:
576:
570:
569:
557:
548:
547:
536:
525:
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510:
501:
500:
488:
475:
474:
460:
424:Iron Duke engine
402:
401:
397:
391:rear wheel drive
350:(as fitted with
334:
333:
329:
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321: in ×
320:
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50:Pontiac Division
31:
19:
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629:
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609:Pontiac engines
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544:Popular Science
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490:
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470:Popular Science
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367:Pontiac Tempest
331:
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281:Pontiac Tempest
145:
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64:
34:
17:
12:
11:
5:
637:
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621:
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596:
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580:"Pontiac 1962"
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476:
449:
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436:
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426:
419:
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405:critical speed
373:The Tempest's
296:
293:
271:General Motors
255:Indianapolis 4
245:
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197:Cooling system
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63:Indianapolis 4
61:
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54:General Motors
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36:
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32:
24:
23:
15:
13:
10:
9:
6:
4:
3:
2:
636:
625:
624:John DeLorean
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340:John DeLorean
336:
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278:
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224:Torque output
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177:
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135:
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132:Piston stroke
129:
112:
110:
109:Cylinder bore
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100:
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84:Configuration
81:
76:
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62:
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55:
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258:
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214:Power output
202:Water-cooled
99:Displacement
45:Manufacturer
383:torque tube
369:convertible
301:inline four
92:inline four
60:Also called
598:Categories
445:References
387:driveshaft
375:drivetrain
348:carburetor
289:Trophy V-8
239:Dry weight
233:Dimensions
180:carburetor
167:Combustion
155:Valvetrain
70:Production
379:transaxle
276:Trophy V8
186:Fuel type
520:Autoweek
418:See also
285:Trophy 4
190:Gasoline
39:Overview
398:⁄
330:⁄
316:⁄
305:Tempest
295:History
144:⁄
121:⁄
73:1961-63
259:Indy 4
208:Output
175:system
78:Layout
65:Indy 4
365:1962
344:gross
257:, or
249:The
173:Fuel
269:of
160:OHV
52:of
600::
582:.
564:.
552:^
542:.
529:^
517:.
505:^
495:.
479:^
467:.
453:^
318:16
123:16
586:.
568:.
523:.
499:.
400:8
396:5
332:4
328:3
325:+
323:3
314:1
311:+
309:4
146:4
142:3
139:+
137:3
119:1
116:+
114:4
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