Pontiac Specifications

By the early 1950s, Pontiac needed to overhaul its overly conservative styling and outdated straight eight. Finally, in 1955, the "old-man's-car" was dumped -- the new, vibrant "Strato-Streak" era was here. Here are the specifications for the 1955-1957 Pontiac:

By 1957, Pontiac sales and production numbers were falling.
By 1957, Pontiac sales and production
numbers were falling.

1955 Pontiac Models, Prices, Production

860 Chieftain (wheelbase 122.0) Weight
Price
Production
2-door sedan
3,476$2,10558,654
4-door sedan
3,511$2,16465,155
2-door station wagon, 6-passenger
3,626$2,4348,620
4-door station wagon, 8-passenger
3,686$2,518 6,091
Total 1955 860 Chieftain


138,520

870 Chieftain (wheelbase 122.0)
Weight Price Production
2-door sedan 3,476$2,20928,950
4-door sedan3,511$2,26891,187
Catalina hardtop coupe
3,521$2,33572,608
4-door station wagon, 6-passenger3,676$2,603 19,439
Total 1955 870 Chieftain


212,184

Star Chief (wheelbase 124.0; wagon, 122.0)
Weight
Price
Production
4-door sedan3,556$2,36244,800
Custom 4-door sedan3,557$2,45535,153
Custom Catalina hardtop coupe3,566$2,49999,629
convertible coupe
3,791$2,69119,762
Custom Safari 2-door wagon, 6-passenger
3,636$2,962 3,760
Total 1955 Star Chief


203,104
Total 1955 Pontiac


553,808

1956 Pontiac Models, Prices, Production

860 Chieftain (wheelbase 122.0)
Weight Price Production
2-door sedan 3,452$2,24041,908
4-door sedan3,512$2,29841,987
Catalina hardtop coupe3,512$2,37046,335
Catalina hardtop sedan
3,577$2,44335,201
2-door station wagon, 6-passenger3,612$2,5696,099
4-door station wagon, 9-passenger3,707$2,653 12,702
Total 1956 860 Chieftain


184,232

870 Chieftain (wheelbase 122.0) Weight PriceProduction
4-door sedan3,512$2,41322,082
Catalina hardtop coupe3,512$2,48024,744
Catalina hardtop sedan3,577$2,53425,372
4-door station wagon, 6-passenger3,657$2,749 21,674
Total 1956 870 Chieftain

93,872

Star Chief (wheelbase 124.0; wagon, 122.0)Weight
Price
Production
4-door sedan3,577$2,527
18,346
Custom Catalina hardtop coupe3,567$2,66543,392
Custom Catalina hardtop sedan3,647$2,73548,035
convertible coupe3,797$2,85713,510
Custom Safari 2-door wagon, 6-passenger3,642
$3,1294,043
Total 1956 Star Chief


127,325
Total 1956 Pontiac


405,429

1957 Pontiac Models, Prices, Production

Chieftain (wheelbase 122.0)
Weight Price
Production
2-door sedan3,515$2,46321,343
4-door sedan3,5602,52735,671
Catalina hardtop coupe3,5552,52951,017
Catalina hardtop sedan3,6352,61440,074
Safari 2-door wagon, 6-passenger3,6902,8412,934
Safari 4-door wagon, 9-passenger3,8352,898 11,536
Total 1957 Chieftain


162,575

Super Chief (wheelbase 122.0)
Weight
Price
Production
4-door sedan3,585
$2,66415,153
Catalina hardtop coupe3,570$2,73515,494
Catalina hardtop sedan3,640$2,79319,758
Safari 4-door wagon, 6-passenger3,765$3,021
14,095
Total 1957 Super Chief


64,500

Star Chief (wheelbase 124.0; wagon, 122.0)
Weight
Price
Production
4-door sedan3,630$2,8393,774
Custom 4-door sedan3,645$2,8968,874
Custom Catalina hardtop coupe3,640$2,90132,862
Custom Catalina hardtop sedan3,710$2,97544,283
convertible coupe3,860$3,10512,789
Custom Safari 2-door wagon, 6-passenger3,750$3,4811,292
Custom Safari 4-door wagon, 6-passenger*3,810$3,636 1,894
Total 1957 Star Chief


105,768

Bonneville (wheelbase 124.0)
Weight
Price
Production
convertible coupe
4,285
$5,782
630
Total 1957 Pontiac


333,473

*Also referred to as the "Transcontinental." Source: Encyclopedia of American Cars from 1930, by the Auto Editors of Consumer Guide, Publications International, Ltd., 1993. Calendar-year production was 581,860 in 1955, 332,268 in 1956, and 343,298 in 1957.

1955 Pontiac Engines

cid
compression
ratio
carburetorbhp @ rpm torque @ rpm
transmission
287.2
7.4:1
1-2V
173 @ 4,400
256 @ 2,400
3-speed
287.28.0:11-2V180 @ 4,600
264 @ 2,400
Hydra-Matic
287.28.0:11-4V200 @ 4,600 264 @ 2,400 Hydra-Matic, 3-speed

1956 Pontiac Engines

cid compression
ratio

carburetorbhp @ rpmtorque @ rpmtransmission
316.67.9:11-2V 192 @ 4,400
297 @ 2,400
3-speed (Chieftain)
316.68.9:11-2V 205 @ 4,600
294 @ 2,600
Hydra-Matic (Chieftain)
316.67.9:11-4V 216 @ 4,800
315 @ 2,800
3-speed (Star Chief)
316.68.9:11-4V 227 @ 4,800
312 @ 3,000
Hydra-Matic (Star Chief)
316.610.0:12-4V 285 @ 5,100
n/a
3-speed

1957 Pontiac Engines

­
cid compression
ratio
carburetorbhp @ rpmtorque @ rpmtransmission
347.08.5:11-2V 227 @ 4,600
333 @ 2,300
3-speed (Chieftain)
347.010.0:11­-2V 252 @ 4,600
354 @ 2,400
Hydra-Matic (Chieftain)
347.08.5:11-4V 244 @ 4,800
316 @ 2,800
3-speed (Star Chief, Super Chief)
347.010.0:11-4V 270 @ 4,800
359 @ 2,800
Hydra-Matic (Star Chief, Super Chief)
347.010.0:13-2V 290 @ 5,000
n/a
Hydra-Matic; NASCAR certified
347.010.0:13-2V 317 @ 5,200
n/a
3-speed, Hydra-Matic; NASCAR certified
347.010.25:1FI310 @ 4,800
400 @ 3,400
Hydra-Matic (Bonneville)

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