Chevy Casting Numbers, Big Block Chevy Intake Manifolds:

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Casting Number	Engines	Type	Years Used	Notes
3866963	396cid V8	Aluminum, Holley 4bbl	1965	375, 425 L-37
3885069	396cid V8	Aluminum, Holley 4bbl	1966 - 1968	375 L-78
3885069	427cid V8	Aluminum, Holley 4bbl	1966 - 1968	425 L-72
3886093	427cid V8	Aluminum, Holley 4bbl	1967	430 L-88
3894374	427cid V8	Aluminum, Holley 4bbl	1967	435 3x2 L-71
3894382	427cid V8	Aluminum, Holley 4bbl	1967	400 3x2 L-68, Oval Port
3919849	427cid V8	Aluminum, Holley 4bbl	1968	390 L-36, Oval Port, Qjet
3919850	427cid V8	Aluminum, Holley 4bbl	1968	400 3x2 L-68, Ovat Port
3919852	427cid V8	Aluminum, Holley 4bbl	1968	435 3x2 L-71
3919878	396cid V8	Aluminum, Holley 4bbl	1968	375 L-78
3919878	427cid V8	Aluminum, Holley 4bbl	1968	425 L-72
3933163	396cid V8	Aluminum, Holley 4bbl	1968 - 1969	375 L-78/L-89
3933163	427cid V8	Aluminum, Holley 4bbl	1968 - 1969	425 Copo
3933198	427cid V8	Aluminum, Holley 4bbl	1968 - 1969	430 L-88/ZL-1
3937793	427cid V8	Aluminum, Holley 4bbl	1968	390 L-36, Oval Port, Qjet, Late
3937795	427cid V8	Aluminum, Holley 4bbl	1969	400 3x2 L-68, Oval Port
3937797	427cid V8	Aluminum, Holley 4bbl	1969	435 3x2 L-71
3947801	427cid V8	Aluminum, Holley 4bbl	1969	390 L-36, Oval Port, Qjet
3963569	396,402cid V8	Aluminum, Holley 4bbl	1970 - 1971	375 L-78/L-89
3963569	454cid V8	Aluminum, Holley 4bbl	1970 - 1971	LS-6, Lowrise
3967474	454cid V8	Aluminum, Holley 4bbl	1971	425
6269318	454cid V8	Aluminum, Holley 4bbl	1972
336789	454cid V8	Iron, Rochester 4bbl	1974	235, 270
346242	454cid V8	Iron, Rochester 4bbl	1975	215
353015	454cid V8	Iron, Rochester 4bbl	1973	215, 245
393841	454cid V8	Iron, Rochester 4bbl	1973 - 1975	215
3856289	396cid V8	Iron, Rochester 4bbl	1965 - 1966	325 L-35
3866948	396cid V8	Iron, Rochester 4bbl	1966 - 1967	325, 360 L-34/L-35
3866948	427cid V8	Iron, Rochester 4bbl	1966 - 1967	390, Holley
3883948	396cid V8	Iron, Rochester 4bbl	1966 - 1968	325 L-35
3883948	427cid V8	Iron, Rochester 4bbl	1966 - 1968	385, 390 L-36
3931067	396cid V8	Iron, Rochester 4bbl	1969	325 L-35
3931067	427cid V8	Iron, Rochester 4bbl	1969	335, 390 L-36
3952900	396cid V8	Iron, Rochester 4bbl	1969	265 2V
3955287	402cid V8	Iron, Rochester 4bbl	1970 - 1971	300, 330, 350 LS-3
3955287	454cid V8	Iron, Rochester 4bbl	1970 - 1971	360, 365, 390
6263753	402cid V8	Iron, Rochester 4bbl	1972	240 LS-3
6263753	454cid V8	Iron, Rochester 4bbl	1972	240, 270

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