Cylinder Head ID
Small block chevy head castings
Casting #	Combustion Chamber size CCs	Intake valve	Exhaust valve	Production Years	Misc	Engine
10033867	62cc	2.02	1.6		over the counter 23 degree, angle plug, 196 cc intake runner, Aluminum
10045434	55cc				Over the counter 15 degree, angle plug, raised runner, aluminum
10051101	55cc	2.02	1.6		Bowtie, Aluminum angle plug, raised runner, 196 intake ports
10065202	cc	1.94	1.5	1987-95		350
10065203	cc	1.94	1.5	1987-95		350
10065204	cc			1987-65		350
10065205	cc			1987-95		305
10065206	cc			1987-95		350
10065207	cc			1987-68		305
10088113	58cc	1.94	1.5	1988-up	angle plug, "D" exhaust ports	350
10093328	61cc				Pontiac 15 degree heads, aluminum, 224 cc ports.
10106178	cc			1990	LT1, ZR1, DOHC 32-valve, aluminum.	350
10106179	cc			1990	LT5, ZR1, DOHC 32- valve	350
10110810	cc			1993-up	Gen. 1	350
10120928	cc			1987-95		350
10125320	cc			1994-96	Gen.2 LT1, cast iron	350
10128374	68cc			1992-up	Gen. 2 LT1, reverse flow, 175 intake ports, 68 cc exhaust ports	350
10129552	cc			1987-95		350
10134352	45cc				Bowtie Low port, angle plug, 18 degree, 223 intake port, race head
10147898	cc			1995-96	Gen. 1 crate motor	350
10159550	cc			1987-95		350
10159551	cc			1987-95		305
10159553	cc			1987-65		305
10174389	cc			1991-94	LT1, ZR1, DOHC-32 valve	350
10174390	cc			1991-95	LT1, ZR1, DOHC-32 valve	350
10185040	45cc				Bowtie, symmetrical ports,263 cc intake ports, splayed valves
10185040	45cc				Bowtie, 2nd version symmetrical ports, 240cc intake ports, splayed valves
10205245	cc			1993	Gen. 2 LT1, Reverse flow, 175 intake ports, 68 cc exhaust ports	350
10207643	cc			1994-96	Gen. 2 LT1, Reverse flow, 175 intake ports, 68 cc exhaust ports	350
10215339	cc			1997	Gen. 3 "LS1"	350
10225121	cc			1994-95	LT5, ZR1, DOHC 32-valve	350
10225122	cc			1995	LT5, ZR1, DOHC 32-valve	350
10239902	54.4cc			1996-up	Gen. 2 LT4, Reverse flow, 195 cc intake, angle plug.	350
10239906	64cc	1.94	1.5	1996-up	Vortec 5700, L31, 170 cc intake ports.	350
12367712	62cc	2	1.55	1999-up	Fast burn, aluminum, 210 cc intake ports.
12367713	62cc	2	1.55	1999-up	Fast burn, used on ZZ430 crate engine, aluminum 210cc intake ports.
12480005	38cc	2.125	1.625	2000	LS1, GTZ, Aluminum,
12480011	48cc			1997-up	Bowtie SB2.2, 2nd version of SB2, mirror ports, revised valve, angle plug location
12506450	cc			1987-95		350
12509859	cc			1987-94		305
12516852	cc			1987-95		350
12551561				1996	Gen. 2 LT1	350
12552520	cc			1997-up	Vortec truck	350
12554290	cc			1994-96	Gen. 2 LT1	350
12555690	cc			1996	Gen. 2, LT4	350
12558059	64cc	1.84	1.5	1997	Vortec, truck	350
12558062	64cc	1.94	1.5	1998	L31 Vortec truck, 170cc intake ports.	350
12558806				1997-98	Gen 3 LS1 Aluminum	350
12559853				1999	Gen 3 LS1 Aluminum	350
14008856				1979-81		267
14010201				1982-85		305
14010516				1980-86		350
14011034	64cc	2.02	1.6	1980	Bowtie, 184 cc intake ports, angle plug, Phase 2 head	350
14011049	55cc	2.02	1.6	1982	Bowtie, aluminum , angle plug, 180 cc intake ports.
14011083	64cc	1.94	1.5	1985-86	Crate motor,285/300hp
14014415		1.72	1.5	1980-85		267/305
14014416	58cc	1.84	1.5	1980-86		305
14014440	58cc	1.84	1.5	1980		305
14019821				1980-86		350
14019924				1979-81		267
14019926				1980-86		350
14020517				1980		350
14020555				1981		305
14020556				1981		350
14022056				1981-85		350
14022206				1980		350
14022301				1980-86		305
14022601	58cc	1.84	1.5	1980-86		267/305
14022801		1.72	1.5	1980-86		305
14034806				1978-82		267
14034808				1980-86		350
14034808	73cc	1.94	1.5	1996-up	Gen 1 Good wrench	350
14034810				1980-86	Truck	350
14034811				1980-86	Truck	350
14039122				1981-86	Truck	305
14039121				1981-86	Truck	305
14071114				1980-86		350
14075381				1980-86	Truck	350
14079261				1986		350
14085844				1980-86	Truck	350
14085963				1986	350	350
14089119				1986-88		350
14094093				1986-88		350
14094093				1986-88		350
14094093				1986-88		350
14096217	64cc			1985-86	Crate motor, 285/300hp	350
14101081				1987-95		305
14101083	64cc			1987-up	Gen 1, also used on crate motor	350
14101128	58cc			1986-87	Aluminum, angle plug	350
14102187	58cc	1.84	1.5	1987-91		305
14102191				1987-up		305
14102193				1987-up		350
1816887	60cc	1.72	1.5	1963	Made in Canada	283
24502559				1996-97	Bowtie, SB2, 1 st version, mirror ports, aluminum, 196 cc ports.
25500141	42cc	2.1	1.625		Buick, chevy aluminum 10 degree heads, 235 cc intake ports.
3986316	76cc	1.94	1.5	1971-72		350
330545	76cc	2.02	1.6	1973		350
333881	76cc	2.02	1.6	1974-75		350
333882	75cc	1.94	1.5	1974-80		350/400
340292	64cc	2.02	1.6	70s	angle plug head
354434	60cc	1.72	1.5	1975-79		262/267/305
358741	76cc	1.72	1.5	1976-79		305
3636839	cc	1.72	1.5	1955		265
3703523	67cc	1.72	1.5	1955		265
3713358	cc	1.72	1.5	1955-56		265
3713569	cc	1.72	1.5	1955-56		265
3725306	56cc	1.72	1.5	1956	Corvette head	265
3731539	60cc	1.72	1.5	1957	Corvette 283HP	283
3731554	70cc	1.72	1.5	1957-62		283
3731556	cc	1.72	1.5	1957	Made in Canada	283
3731762	56cc	1.72	1.5	1956	Corvette 2x4 Carbs	265
3731544	60cc	1.72	1.5	1957-61	Corvette	283
3737775	75cc	1.72	1.5	1962-67		283/327
3740997	76cc	1.94	1.6	1957	1x4,2x4, FI Corvette	1957
3743096	cc	1.72	1.5	1962-67		327
3747363	cc	1.72	1.5	1957-61		283
3747460	69cc	1.72	1.5	1959-67		283/327
3748770	60cc	1.72	1.5	1955-62	1x4,2x4 FI Corvette	265/283
3748772	69cc	1.72	1.5	1957-65	1x4,2x4 FI Corvette	283
3755537	69cc	1.72	1.5	1957-62	2 Brl	283
3755549	60cc	1.72	1.5	1957-62	Car and truck, 2 bbl	283
3755550	60cc	1.72	1.5	1957-62	1x4,2x4 FI Corvette	283
3755539	60cc	1.72	1.5	1958-62	Truck	283
3755585	cc	1.72	1.5	1962-67	Truck	327
376450	76cc	1.72	1.5	1975-81	6 or 7 exhaust bolt holes	262/267/305
376455	75cc	1.72	1.5	1980-84		350
3767462	62cc	1.94	1.5	1962-67		327
3767465	60cc	1.72	1.5	1959-61	1x4,2x4 FI Corvette	283
3767754	60cc	1.72	1.5	1959-61		283
3767792	cc	1.72	1.5	1960-64		283
3770126	cc	1.94	1.5	1967-70		327/350
3774682	69cc	1.72	1.6	1960-67		283/327
3774684	75cc	1.72	1.5	1962-64		327
3774692	60cc	1.72	1.5	1958-64	1x2,2x4 FI Corvette	283
3782461	62cc	2.02/1.94	1.60/1.50	1961-70	Double hump heads, no accessory holes 160 cc runners	302/327/350
3782461x	64cc	1.94	1.5	1960-63	Double hump heads, no accessory holes 172 intake runners	283/327
3795896	60cc	1.72	1.5	1958-72		283/307/327
3798996	cc	1.72	1.5	1963-67		327
3814482	75cc	1.72	1.5	1962-67		283/327/350
3817680	cc	1.72	1.5	1959		283
3817681	cc	1.72	1.5	1962-67		327
3817682	cc	1.72	1.5	1961-62		283
3836839	cc	1.72	1.5	1955		265
3836842	cc	1.72	1.5	1957-67		265/283
3837064	67cc	1.72	1.5	1958-62		265/283
3837065	cc	1.72	1.5	1955-56	Truck	265
3837775	75cc	1.72	1.5	1962-67		283/327
3848720	cc	1.72	1.5	1957-58		283
3854520	61cc	1.72	1.5	1962-67		283/327
3874480	69cc	1.72	1.5	1960-67		238/327
3884520	60.5cc	1.72	1.5	1960-67	Some marked "Made in Canada" also used by studebaker	283
3890462, 3891462	63.3cc	2.02,1.94	1.60,1.50	1962-68	Double hump heads, no accessory holes	302/327/350
3901068	64cc	1.94	1.5	1987-up	Crate motor, 285 HP	350
3911032	70cc	1.72	1.5	1968-70		307/327
3912264	cc	1.72	1.5	1958-62	car,truck	283
3912265	cc	1.72	1.5	1963-64		283
3912311	cc	1.72	1.5	1965-67		327
3912313	cc	1.72	1.5	1965-67		327
3917264	cc	2.02	1.6	1967	Z-28 Camaro	302
3917290	cc	1.72	1.5	1967-70	truck	307/327
3917291	63cc	2.02,1.94	1.60,1.50	1962-69	Double hump heads, no accessory holes	302/327/350
3917292	64cc	2.02	1.6	1967-69	Corvette 350HP double hump	327/350
3917293	75cc	1.72	1.5	1968-69		307/327
3927185	70cc	1.72	1.5	1968-76		307/327/350
3927186	63cc	2.02,1.94	1.60,1.50	1968-72	Double hump, no accessory holes	302/350
3927187	64cc	2.02	1.6	1969-70	Double hump heads, no accessory holes	350
3927188	75cc	1.72	1.5	1969-70		307/327
3931633	cc	1.72	1.5	1968-73		307
3931635	cc	1.94	1.5	1968-76		350
3931638	cc			1968	truck	327
3932441	76cc	1.94	1.5	1967-79	152 cfm runners	327/350
3932441x	80cc	1.94	1.5	1969-70		350/400
3932454	cc			1968-79	truck	307/350
3946812	cc	1.94	1.5	1969		350
3946813	cc	1.94	1.5	1969-79	truck	350
3947040	63.3/64cc	2.02/1.94	1.60/1.50	1968-70	Right angle casting , good HP head used in trucks, no accessory holes	302/327/350/
3947041	63/64cc	2.02/1.94	1.60/1.5	1968-79	Right angle casting, Good HP head used in trucks, no accessory holes.	1968-79
3961598	76cc	1.94	1.5	1970-76		400
3964286	cc			1968-77		350
3965742	cc			1970 over the counter angle plug		350
3970126	75cc	1.72	1.5	1967-79	148.3 intake cfm, 87.9 ex cfm	327/350
397041x	64cc	2.02	1.6	1969-70	Right angle casting .	1969-70
3973370	64cc	1.94	1.5	1969-70	over the counter, angle plug.
3973414	64cc	2.02	1.6	1970	LT1-370hp, double hump	350
3973487	75cc	2.02/1.94	1.60/1.50	1968-79	used on 71-72 LT1	350
3973487x	75cc	2.02/1.94	1.60/1.50	1698-73	Corvette LT1	350
3973493	76cc	1.94	1.5	1970-76	143.6 cfm intake, 87.2 ex cfm	400
3986339, and X	74.5cc	1.72	1.5	1968-79	car, truck	307/350
398633x	76cc	1.94	1.5			350
3986388	cc	1.72	1.5	1968-79	truck	350
3991492	64cc	2.02/1.94	1.60/1.50	1968-73	LT1, camel hump heads, accessory holes, straight or angle plug	327/350
3998916	76.2cc	2.02	1.6	1972-75	Corvette LT1, screw in studs	350
3998920	cc	1.94	1.5	1972-75		350
3998991	74.5cc	1.72	1.5	1968-79		307/350
3998993	75cc	1.94	1.5	current	Good wrench crate motor	350
3998993	75cc	1.94/1.72	1.5	1698-79	150 cfm intake, 91.1 cfm ex.	307/350
3998997	76cc	1.94	1.5	1971-73		350/400
4079261	cc	1.94	1.5	1975		350
462624	76cc	1.94	1.5	1975-86		350/400
468642	75cc	1.72	1.5	1975-84		350/400
471513	cc	1.72	1.5	1979-81		267
517513	cc	1.72	1.5	1979-81		267
	Crank Numbers
	Block Numbers