Small Block Chevy Suffix Codes: UTU - ZY

Abbreviations: AB = Air Brakes, AR = Air Injector Reactor, CA = California, HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas, PG = Powerglide, mt = manual trans, mt-3, 3 speed manual, SHP = Special High Performance, TH = Turbo Hydramatic, ti = transistor ignition. Induction is one (1) 4 barrel carburetor unless specified.

	Engine Code	Year	CID	Application	Engine VIN	HP	BBLS	GM Body/Comments
	UTU	1978	305	van & bus	U LG9	145	2	C-10 & 1500
	UTW	1978	305	conv.cab	U LG9	145	2	C-10 to 2500
	UTX	1978	305	conv.cab	U LG9	145	2	C-10 to 2500
	UU	1969	307	m/t		200	2	C-20
	UUB	1983	350	conv.cab	L LS9	165	4	C-10 to 3500
	UUC	1983	350	conv.cab	L LS9	165	4	C-10 to 3500
	UUD	1983	350	conv.cab	L LS9	165	4	C-10 to 3500
	UUF	1983	350	conv.cab	L LS9	165	4	C-10 to 3500
	UUH	1983	350	conv.cab	L LS9	165	4	C-10 to 3500
	UUJ	1983	350	conv.cab	L LS9	165	4	C-10 to 3500
	UV	1969	307	m/t		200	2	K-20
	UW	1969	307	m/t		200	2	K-20
	UYR	1979	305	conv. cab, m/t	G LG9	145	2	C-10 to 2500
	UYS	1979	305	conv. cab, a/t	G LG9	145	2	C-10 to 2500
	UZA	1981	350	con cab, m/t, exp	L LS9	165	4	C-10 & 1500
	UZB	1981	350	con cab, a/t, exp	L LS9	165	4	C-10 & 1500
	UZC	1981	350	con cab, m/t, exp	L LS9	165	4	K-10 & 1500
	UZD	1981	350	con cab, a/t, exp	L LS9	165	4	K-10 & 1500
	VB	1969	350	m/t	-	255	4	C-10 & 20
	VJZ	1972	350	m/t	-	175	4	C-10 & 20
	VR	1969	350	m/t, 3 spd	-	255	4	C-20 & 30
	VS	1969	350	m/t, 3 spd	-	255	4	K-20
	WA	1965	283	M/t	-	175	2	C-10 to 35
	WA	1968	307	M/t	-	200	2	C-10 to 25
	WA	1969	350	-	-	255	4	C-20 to 35
	WB	1967	283	m/t	-	175	2	K-10 to 25
	WB	1968	307	M/t	-	200	2	C-20 to 35
	WC	1967	283	tur hydro		175	2	C-20 to 35
	WC	1968	307	m/t, 3 spd	-	200	2	C-10 to 35
	WD	1967	283	-	-	175	2	van 10 to 25
	WD	1968	307	-	-	200	2	van 10 to 25
	WE	1965	283	M/t	-	175	2	C-10 to 25
	WE	1968	307	Powerglide	-	200	2	C-10
	WF	1966	283	m/t, A.I.R.	-	175	2	C-10, 15, 20
	WF	1968	307	M/t	-	200	2	C-20 & 25
	WF	1969	350	-	-	215	2	C-50
	WG	1967	283	m/t	-	175	2	C-10 to 30
	WG	1968	307	m/t	-	200	2	C-20 & 30
	WH	1966	283	Powerglide, A.I.R.	-	175	2	C-10 to 25
	WH	1968	307	m/t	-	200	2	K-20 & 25
	WH	1969	350	m/t, A.I.R.	-	255	4	C-15, 25, 35
	WI	1967	283	m/t	-	175	2	K-10 to 25
	WI	1968	307	M/t	-	200	2	K-10 to 25
	WI	1969	350	-	-	255	4	C 25 & 35
	WJ	1969	350	Powerglide	-	255	4	C-10 to 35
	WK	1969	350	tur hydro	-	255	4	C-10 to 35
	WL	1967	283	-	-	175	2	van 10 to 25
	WL	1968	307	-	-	200	2	van 15 to 25
	WL	1969	350	Powerglide, A.I.R.	-	255	4	C-20 & 25
	WM	1967	283	-	-	175	2	van 10 to 25
	WM	1968	307	-	-	175	2	van 10 to 25
	WM	1969	350	-	-	255	4	C-20 to 35
	WN	1968	307	-	-	200	2	C-20 to 35
	WN	1969	350	m/t, A.I.R.	-	255	4	K-10 to 25
	WO	1967	283	m/t	-	175	2	K-10 & 20
	WO	1968	307	m/t, 3 spd	-	200	2	C-10 to 30
	WO	1969	350	m/t	-	255	4	K-20 & 25
	WP	1968	307	-	-	200	2	C-20 to 35
	WP	1969	350	tur hydro	-	255	4	K-10 to 25
	WQ	1968	307	-	-	200	2	C-20 & 25
	WQ	1969	350	turbohydro, A.I.R.	-	255	4	K-20 & 25
	WR	1967	283	turbohydro, A.I.R.	-	175	2	C-10 to 25
	WR	1968	307	m/t, 3 spd	-	200	2	C-20 to 35
WR	1969	350	Powerglide	-	255	4	C-20 & 30
WS	1969	350	turhydro	-	255	4	C-20 & 30
WT	1969	350	M/t	-	255	4	C-20 & 30
WW	1967	283	-	-	175	2	van 10 to 25
WW	1968	307	-	-	200	2	van 15 to 25
WZ	1969	350	m/t, 3 spd	-	255	4	C-10 & 20
XA	1969	350	m/t	-	255	4	C-10 to 35
XB	1969	350	M/t	-	255	4	C-20 to 35
XC	1969	350	Powerglide	-	255	4	C-10 to 25
XD	1969	350	turhydro	-	255	4	C-10 to 35
XE	1963	327	universal service	-	-	-	cars
XE	1969	350	M/t	-	255	4	C-20 & 30
XF	1969	350	Powerglide	-	255	4	C-10 to 35
XG	1969	350	turbohydro	-	255	4	C-10, 20, 30
XH	1969	350	-	-	215	2	C-40
XI	1969	350	-	-	215	2	C-50 & 60
XJ	1969	350	-	-	215	2	C-50
XK	1969	350	-	-	215	2	T-50 & 60
XN	1969	350	-	-	215	2	C-60
XO	1969	350	turbohydro, A.I.R.	-	255	4	K-20
XP	1969	350	m/t, A.I.R.	-	255	4	C-10 to 30
XS	1969	350	-	-	215	2	C-40 & 50
XU	1969	350	-	-	215	2	C-50
XV	1969	350	-	-	215	2	T-50
XW	1969	350	m/t	-	255	4	K-10 to 25
XX	1969	350	m/t	-	255	4	K-20 & 25
XY	1969	350	turbohydro	-	255	4	K-10 to 25
XZ	1969	350	Powerglide,A.I.R.	-	255	4	C-20 & 25
YA	1968	327		-	240	4	C-20 to 35
YB	1968	327	Powerglide	-	220	4	C-10
YC	1966	327	m/t, A.I.R.	-	220	4	C-10 to 25
YC	1968	327	m/t, A.I.R.	-	240	4	C-10 to 25
YD	1966	327	Powerglide,A.I.R.	-	220	4	C-10 to 25
YD	1968	327	Powerglide,A.I.R.	-	240	4	C-10 to 25
YH	1966	327	hydramatic	-	220	4	C-30
YH	1967	327	Powerglide,A.I.R.	-	220	4	C-10 to 35
YJ	1967	327	turbohydro,A.I.R.	-	220	4	C-10 to 25
YJ	1968	327	turbohydro,A.I.R.	-	240	4	C-20 & 25
YK	1968	327	m/t, 3 spd	-	240	4	C-10 to 35
YL	1968	327	M/t	-	240	4	K-20 & 25
YM	1967	327	m/t	-	220	4	K-10 to 25
YM	1968	327	m/t	-	240	4	C-20 to 35
YR	1966	327	Powerglide	-	220	4	C-10 to 25
YR	1968	327	Powerglide	-	240	4	C-20 & 25
YS	1966	327	m/t	-	220	4	C-10 to 35
YS	1968	327	m/t, 3 spd	-	220	4	C-20 to 35
YT	1968	327	Powerglide		220	4	K-10 & 20
YU	1968	327	m/t, 3 spd	-	220	4	K-20
YV	1968	327	M/t	-	220	4	C-10
YX	1967	327	m/t	-	220	4	K-10 to 25
ZA	1965	327	m/t	-	275	4	Nova
ZA	1969	350	m/t, A.I.R.	-	255	4	C-10, 20, 30
ZAA	1979	350	m/t, L48	8	195	4	Vette
ZAA	1992	350	ZR1, ohc, 32v, m/t	J LT5	375	MPFI	Vette
ZAB	1979	350	a/t, L48, fed.	8	195	4	Vette
ZAC	1979	350	L48, Calif	8	195	4	Vette
ZAC	1992	350	rev cooling, a/t	LT1 P	300	TPI	Vette
ZAD	1979	350	L48, high altitude	8	195	4	Vette
ZAK	1980	350	a/t, L48	8	190	4	Vette
ZAM	1980	350	m/t, L48	8	190	4	Vette
ZB	1965	327	m/t, high perf.	-	300	4	Chevy II
ZB	1966	327	m/t, hi perf. A.I.R.	-	300	4	Chevy II
ZB	1969	350	m/t	-	255	4	C-20
ZBA	1979	350	m/t, L82	4	225	4	Vette
ZBA	1982	350	Cross-fire inject	L83 8	200	TTBI	Vette
ZBB	1979	350	a/t, L82	4	225	4	Vette
ZBC	1980	350	a/t, L82	6	230	4	Vette
ZBC	1982	350	Cross-fire inject	L83 8	200	TTBI	Vette
ZBD	1980	350	m/t, L82	6	230	4	Vette
ZC	1966	327	A.I.R., a/c	-	-	-	Chevy II
ZC	1969	350	m/t		255	4	C-20 & 30
ZCA	1980	305	a/t, LG4	H	180	4	Vette
ZD	1966	327	Powerglide, A.I.R.		275	4	Chevy II
ZD	1969	350	Powerglide		255	4	C-10
ZDA	1981	350	M/t	L81 6	190	4	Vette
ZDB	1981	350	a/t	L81 6	190	4	Vette
ZDC	1981	350	m/t	L81 6	190	4	Vette
ZDD	1981	350	m/t	L81 6	190	4	Vette
ZDF	1985	350	Tuned port inj, a/t	L98 8	230	TPI	Vette
ZE	1965	327	man trans., a/c	-	-	-	Chevy II
ZE	1969	350	m/t	-	255	4	C-20
ZF	1965	327	m/t, a/c, hi perf.	-	300	4	Chevy II
ZF	1969	350	turbohydro	-	255	4	C-10 & 20
ZF	1969	350	m/t	-	255	4	K-10
ZFC	1984	350	Tuned prt inj, a/t	L83 8	205	TPI	Vette
ZFD	1984	350	Tuned prt inj, m/t	L83 8	205	TPI	Vette
ZFF	1984	350	Tuned prt inj, a/t	L83 8	205	TPI	Vette
ZFM	1984	350	Tuned prt inj, m/t	L83 8	205	TPI	Vette
ZFN	1982	350	Tuned prt inj, a/t	L83 8	200	TPI	Vette
ZFN	1984	350	Tuned prt inj, a/t	L83 8	205	TPI	Vette
ZG	1966	327	A.I.R.spec hi perf.	-	325	4	Chevy II
ZG	1969	350	m/t, 3 spd	-	255	4	K-10 & 20
ZH	1966	327	sp hi per, EM, a/c	-	325	4	Chevy II
ZH	1969	350	m/t, 3 spd	-	255	4	K-20
ZI	1966	327	special high perf.	-	325	4	Chevy II
ZJ	1966	327	spec high perf, a/c	-	325	4	Chevy II
ZJ	1969	350	turbohydro	-	255	4	K-10 & 20
ZJB	1985	350	Tuned prt inj,m/t	L98 8	230	TPI	Vette
ZJC	1985	350	Tuned prt inj,exp	L98 8	230	TPI	Vette
ZJH	1986	350	a/t, alum heads	L98 8	235	TPI	Vette
ZJJ	1985	350	Tuned prt inj, a/t	L98 8	230	TPI	Vette
ZJK	1985	350	Tuned prt inj, m/t	L98 8	230	TPI	Vette
ZJN	1987	350	a/t, alum heads	L98 8	240	TPI	Vette
ZJR	1987	350	m/t, alum heads	L98 8	240	TPI	Vette
ZJS	1986	350	a/t, alhds, oil cool	L98 8	235	TPI	Vette
ZJW	1986	350	M/t, alhds, oil cool	L98 8	235	TPI	Vette
ZK	1965	327	Powerglide		275	4	Chevy II
ZKA	1986	350	m/t, alum heads	L98 8	235	TPI	Vette
ZKD	1986	350	a/t, alum heads	L98 8	235	TPI	Vette
ZL	1965	327	Pwerglide, hi perf.	-	300	4	Chevy II
ZLA	1987	350	a/t, alhds, oil cool	L98 8	240	TPI	Vette
ZLB	1987	350	export, al. heads	L98 8	240	TPI	Vette
ZLC	1987	350	m/t, alhds, oil cool	L98 8	240	TPI	Vette
ZM	1965	327	Powerglide, a/c		275	4	Chevy II
ZMA	1988	350	a/t, alum heads	L98 8	240	TPI	Vette
ZMC	1988	350	a/t, alhds, oil cool	L98 8	240	TPI	Vette
ZMD	1988	350	m/t, alhds, oil cool	L98 8	240	TPI	Vette
ZN	1965	327	glide, a/c, hi perf.	-	300	4	Chevy II
ZO	1968	307	M/t	-	200	2	C-10
ZP	1968	307	M/t	-	200	2	K-10 & 20
ZQ	1968	307	M/t	-	200	4	K-20
ZRA	1989	350	m/t, alhds, oil cool	L98 8	240	TPI	Vette
ZRB	1989	350	a/t, alum heads	L98 8	240	TPI	Vette
ZRC	1989	350	a/t, alhds, oil cool	L98 8	240	TPI	Vette
ZRJ	1990	350	ZR1, ohc, 32v, m/t	J LT5	380	MPFI	Vette
ZS	1968	307	M/t		200	2	C-20
ZSA	1990	350	a/t, alum heads	L98 8	250	TPI	Vette
ZSB	1990	350	m/t, alum heads	L98 8	250	TPI	Vette
ZSC	1990	350	a/t, alhds, oil cool	L98 8	250	TPI	Vette
ZTA	1991	350	a/t, alum heads	L98 8	245	TPI	Vette
ZTB	1991	350	m/t, alhds, oil cool	L98 8	245	TPI	Vette
ZTC	1991	350	a/t, alhds, oil cool	L98 8	245	TPI	Vette
ZTD	1991	350	ZR1, ohc, 32v, m/t	J LT5	375	MPFI	Vette
ZTH	1991	350	ZR1, ohc, 32v, m/t	J LT5	375	MPFI	Vette
ZTJ	1991	350	ZR1, ohc, 32v, m/t	J LT5	375	MPFI	Vette
ZTK	1991	350	ZR1, ohc, 32v, m/t	J LT5	375	MPFI	Vette
ZUA	1992	350	rev cooling, a/t	LT1 P	300	TPI	Vette
ZUB	1992	350	rev cooling, m/t	LT1 P	300	TPI	Vette
ZVA	1993	350	rev cooling, a/t	LT1 P	300	TPI	Vette
ZVB	1993	350	rev cooling, m/t	LT1 P	300	TPI	Vette
ZVC	1993	350	ZR1, ohc, 32v, m/t	J LT5	375	MPFI	Vette
ZX	1968	307	m/t, 3 spd		200	2	K-10 & 20
ZY	1968	307	m/t, 3 spd		200	2	K-20