Casting Numbers for C3 Corvettes

1968 Corvette Casting Numbers

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
327 - 300 HP (early) Base	3914660	3917291	3919803	3872765	3872778
327 - 300 HP (late) Base	3914678	3917292	3919803	3872765	3872778
327 - 350 HP L79	3914678	3917292	3919803	3872765	3872778
427 - 390 HP (early) L36	3916321	3917215	3919849	3880827	3880828
427 - 400 HP (early) L68	3916321	3917215	3919850	3880827	3880828
427 - 430 HP (early) L88	3916321	3919842	3885069	3880827	3880828
427 - 435 HP (early) L71/L89	3916321	3919840	3919852	3880827	3880828
427 - 390 HP (late) L36	3935439	3917215	3919849	3880827	3880828
427 - 400 HP (late) L68	3935439	3917215	3937795	3880827	3880828
427 - 430 HP (late) L88	3935439	3919842	3933198	3880827	3880828
427 - 435 HP (late) L71/L89	3935439	3919840	3937797	3880827	3880828

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 300 HP (early) Base	3932386	3927186	3927184	3872765	3932461
350 - 350 HP (early) L46	3932386	3927186	3927184	3872765	3932461
350 - 300 HP (mid) Base	3956618	3927186	3927184	3872765	3932461
350 - 350 HP (mid) L46	3956618	3927186	3927184	3872765	3932461
350 - 300 HP (late) Base	3970010	3947041	3927184	3872765	3932461
350 - 350 HP (late) L46	3970010	3927187	3927184	3872765	3932461
427 - 390 HP (early) L36	3935439	3931063	3947801	3880827	3880828
427 - 400 HP (early) L68	3935439	3931063	3937795	3880827	3880828
427 - 430 HP (early) L88	3935439	3946074		3880827	3880828
427 - 435 HP (early) L71	3935439	3919840	3937797	3880827	3880828
427 - 390 HP (mid) L36	3955270	3931063	3947801	3880827	3880828
427 - 400 HP (mid) L68	3955270	3931063	3937795	3880827	3880828
427 - 430 HP (mid) L88	3955270	3946074		3880827	3880828
427 - 435 HP (mid) L71	3955270	3919840	3937797	3880827	3880828
427 - 390 HP (late) L36	3963512	3931063	3947801	3880827	3880828
427 - 400 HP (late) L68	3963512	3931063	3937795	3880827	3880828
427 - 430 HP (late) L88	3963512	3946074		3880827	3880828
427 - 435 HP (late) L71	3963512	3919840	3937797	3880827	3880828
427 - 430 HP ZL1/L88 (alum)	3946052	3946074	3933198	3880827	3880828
427 - 435 HP L89 (alum)		3919842		3880827	3880828

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 300 HP Base (early)	3970010	3927186	3965577	3846559	3932465
350 - 300 HP Base (late)	3970010	3927186	3965577	3846559	3989036
350 - 350 HP L46 (early)	3970010	3927186	3965577	3846559	3932465
350 - 350 HP L46 (late)	3970010	3927187	3965577	3846559	3989036
350 - 370 HP LT1	3970010	3973414	3972110	3872765	3932461
454 - 390 HP LS5 (early)	3963512	3964290	3955287	3969869	3880828
454 - 390 HP LS5 (late)	3963512	3964290	3969802	3969869	3880828

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 270 HP Base	3970010	3973487	3973469	3846559	3989036
350 - 330 HP LT1	3970010	3973487	3959594	3872765	3932461
454 - 365 HP LS5	3963512	3993820	3955287	3880869 *	3880828
454 - 425 HP LS6 (early)	3963512	3946074	3967474	3880869 *	3880828
454 - 425 HP LS6 (late)	3963512	3946074	3963569	3880869 *	3880828

*3969869 was also used

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 200 HP Base (early)	3970010	3998993	6263751	3932461	3989036
350 - 200 HP Base (late)	3970014	3973487X	6263751	3932461	3932461
350 - 255 HP LT1 (early)	3970010	3998993	3959594	3932461 *	3932461 *
350 - 255 HP LT1 (late)	3970014	3973487X	3959594	3932461 *	3932461 *
454 - 270 HP LS5	3999289	3999241	6263753	3969869	3880828

*386711 was also used

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 190 HP L48 (early)	3970014	3998993	3997770	3932461	3932461
350 - 190 HP L48 (mid)	3970010	333881	3997771	3932461	3932461
350 - 190 HP L48 (late)	3970010	333882	3997771	3932461	3932461
350 - 250 HP L82	3970010	330545	3997771	3932461	3932461
454 - 275 HP LS4	3999289	353049	353015	3969869	3880828

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 195 HP L48 (early)	3970010	333881	340261	3932461	3932461
350 - 195 HP L48 (late)	3970010	333882	340261	3932461	3932461
350 - 250 HP L82	3970010	333882	340261	3932461	3932461
454 - 275 HP LS4 (early)	3999289	336781	353015	3969869	3880828
454 - 275 HP LS4 (late)	3999289	336781	336789	3969869	3880828

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 165 HP L48	3970010	333882	346249	3932461	3932461
350 - 250 HP L82	3970010	333882	346249	3932461	3932461

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 180 HP L48	3970010	333882	346249	3932461	3932461
350 - 210 HP L82	3970010	333882	346249	3932461	3932461

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 180 HP L48 (early)	3970010	333882	346249	3932461	3932461
350 - 180 HP L48 (late)	3970010	376450	346249	3932461	3932461
350 - 210 HP L82	3970010	333882	346249	3932461	3932461

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 175 HP L48	3970010	462624	346249	3932461	3932461
350 - 185 HP L48	3970010	462624	346249	3932461	3932461
350 - 220 HP L82	3970010	462624	458520	3932461	3932461

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 195 HP L48 (early)	3970010	462624	14007376	3932461	3932461
350 - 195 HP L48 (late)	14016379	462624	14014433	3932461	3932461
350 - 225 HP L82 (early)	3970010	462624	458520	3932461	3932461
350 - 225 HP L82 (late)	14016379	462624	14007378	3932461	3932461

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
305 - 180 HP LG4	4715111	14014416	14014432	14037671-W	14037672-W
350 - 190 HP L48 (early)	3970010	462624	14014432	3932461	3932461
350 - 190 HP L48 (late)	14010207	462624	14014432	3932461	3932461
350 - 230 HP L82 (early)	3970010	462624	14014432	3932461	3932461
350 - 230 HP L82 (late)	14010207	462624	14014432	3932461	3932461

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 190 HP L81	14010207	462624	14033058	14037671-W	14037672-W

Application	Block	Cylinder Head	Intake	Exhaust (left)	Exhaust (right)
350 - 200 HP L83	14010207	462624	14031372	14037671-W	14037672-W