Pontiac Specifications

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To start the page off here's a frame dimension chart.

Year	Model Designation		Wheel base Inches	Valve Location	Bore and Stroke	Piston Dis place ment Cubic Inches	Com pres sion Ratio (Stand ard)	Maximum Brake H.P. @ R.P.M.	Maximum Torque Lbs. Ft. @ R.P.M.	Normal Oil Pressure Pounds
1950	Silverstreak 6	50-25	120	In Block	3 9/16 x 4	239.2	6.5	90 @ 3400	180 @ 1400	35
1950	Silverstreak 8	50-27	120	In Block	3 3/8 x 3 3/4	268.2	6.5	108 @ 3600	220 @ 2200	35
1951	Silverstreak 6	51-25	120	In Block	3 9/16 x 4	239.2	6.5	96 @ 3400	180 @ 1400	35
1951	Silverstreak 8	51-27	120	In Block	3 3/8 x 3 3/4	268.2	6.5	116 @ 3600	220 @ 2200	35
1952	Six Std	52-25	120	In Block	3 9/16 x 4	239.2	6.8	100 @ 3400	189 @ 1400	35
	Six Auto	52-25	120	In Block	3 9/16 x 4	239.2	7.7	102 @ 3400	189 @ 1400	35
	Eight Std	52-27	120	In Block	3 3/8 x 3 3/4	268.2	6.8	118 @ 3600	222 @ 2200	35
	Eight Auto	52-27	120	In Block	3 3/8 x 3 3/4	268.2	7.7	122 @ 3600	222 @ 2200	35
1953	Six Std	53-25	122	In Block	3 9/16 x 4	239.2	7.0	115 @ 3800	193 @ 2000	35
	Six Auto	53-25	122	In Block	3 9/16 x 4	239.2	7.7	118 @ 3800	197 @ 2000	35
	Eight Std	53-27	122	In Block	3 3/8 x 3 3/4	268.4	6.8	118 @ 3600	222 @ 2200	35
	Eight Auto	53-27	122	In Block	3 3/8 x 3 3/4	268.4	7.7	122 @ 3600	222 @ 2200	35
1954 Early	Chieftan 6 Std	54-25	122	In Block	3 9/16 x 4	239.2	7.0	115 @ 3800	193 @ 2000	35
	Chieftan 6 Auto	54-25	122	In Block	3 9/16 x 4	239.2	7.7	118 @ 3800	197 @ 2000	35
	Chieftan 8 Std	54-27	122	In Block	3 3/8 x 3 3/4	268.4	6.8	122 @ 3800	226 @ 2200	35
	Chieftan 8 Auto	54-27	122	In Block	3 3/8 x 3 3/4	268.4	7.7	127 @ 3800	234 @ 2200	35
	Star Chief 8 Std	54-28	124	In Block	3 3/8 x 3 3/4	268.4	6.8	122 @ 3800	226 @ 2200	35
	Star Chief 8 Auto	54-28	124	In Block	3 3/8 x 3 3/4	268.4	7.7	127 @ 3800	234 @ 2200	35
1955	V8	55-27	122	In Head	3 3/4 x 3 1/4	287.2	8.0	180 @ 4600	264 @ 2400	40
1955	V8	55-28	124	In Head	3 3/4 x 3 1/4	287.2	8.0	180 @ 4600	264 @ 2400	40
1956	V8 Std 2-Bar Carb		122/124	In Head	3 15/16 x 3 1/4	316.6	7.9	192 @ 4400	297 @ 2400	35-45
	V8 Std 2-Bar Carb		122/124	In Head	3 15/16 x 3 1/4	316.6	8.9	192 @ 4400	297 @ 2400	35-45
	V8 Std 4-Bar Carb		122/124	In Head	3 15/16 x 3 1/4	316.6	8.9	216 @ 4800	315 @ 2800	35-45
	V8 Auto 4-Bar Carb		122/124	In Head	3 15/16 x 3 1/4	316.6	8.9	227 @ 4800	312 @ 3000	35-45
	V8 Auto 2-Bar Carb		122/124	In Head	3 15/16 x 3 1/4	316.6	8.9	205 @ 4600	294 @ 2600	35-45
	V8 2x4-Bar Carb		122/124	In Head	3 15/16 x 3 1/4	316.6	10.0	285 @ 5100	330 @ 2600	35-45
1957	V8 Std 2-Bar Carb		122/124	In Head	3 15/16 x 3 9/16	347	8.5	227 @ 4600	333 @ 2300	35-45
	V8 Auto 2-Bar Carb		122/124	In Head	3 15/16 x 3 9/16	347	10.0	252 @ 4600	354 @ 2400	35-45
	V8 Auto 4-Bar Carb		122/124	In Head	3 15/16 x 3 9/16	347	10.0	270 @ 4600	359 @ 2800	35-45
1958	V8 Std 2-Bar Carb		122/124	In Head	4 1/16 x 3 9/16	370	8.6	240 @ 4500	354 @ 2600	35-45
	V8 Std 4-Bar Carb		122/124	In Head	4 1/16 x 3 9/16	370	8.5	255 @ 4500	360 @ 2600	35-45
	V8 Std 4-Bar Carb		122/124	In Head	4 1/16 x 3 9/16	370	10.0	285 @ 4600	395 @ 2800	35-45
	V8 Auto 2-Bar Carb		122/124	In Head	4 1/16 x 3 9/16	370	10.0	270 @ 4600	388 @ 2800	35-45
	V8 Auto 4-Bar Carb		122/124	In Head	4 1/16 x 3 9/16	370	10.0	285 @ 4600	395 @ 2800	35-45
	V8 3x2-Bar Carb		122/124	In Head	4 1/16 x 3 9/16	370	10.0	300 @ 4600	400 @ 3000	35-45
	V8 Fuel Injection		122/124	In Head	4 1/16 x 3 9/16	370	10.0	310 @ 4600	400 @ 3400	35-45
1959	V8 Economy Engine		122/124	In Head	4.0625 x 3.750	389	8.60	215 @ 3600	390 @ 2000	30-40
	V8 Std 2-Bar Carb		122/124	In Head	4.0625 x 3.750	389	8.60	245 @ 4200	392 @ 2000	30-40
	V8 Std 4-Bar Carb		122/124	In Head	4.0625 x 3.750	389	8.60	260 @ 4200	400 @ 2800	30-40
	V8 Auto 2-Bar Carb		122/124	In Head	4.0625 x 3.750	389	10.00	280 @ 4400	408 @ 2800	30-40
	V8 Auto 4-Bar Carb		122/124	In Head	4.0625 x 3.750	389	10.00	300 @ 4600	420 @ 2800	30-40
	V8 Auto 3x2-Bar Carb		122/124	In Head	4.0625 x 3.750	389	10.50	315 @ 4600	425 @ 3200	30-40
	"420-A" Engine 4-Bar Carb		122/124	In Head	4.0625 x 3.750	389	10.50	330 @ 4800	420 @ 2800	30-40
	"420-A" Engine 3x2-Bar Carb		122/124	In Head	4.0625 x 3.750	389	10.50	345 @ 4800	425 @ 3200	30-40