Chevrolet Head Casting Number Reference
Small Blocks
330545 350, 73, Corvette, 76cc, 2.02-1.6 valves
333881 350, 74-75, 76cc, 2.02-1.6 valves
333882 350-400, 74-80, 76cc, 160/60cc ports
340292 "Turbo" Over Counter
Angle Plug, 64cc, 2.02-1.6 valves
354434 262-267-305, 75-79, 163/57cc ports
LW casting
358741 305, 76-79
376450 262-305-350, 84-81, 168/60cc ports, 7
bolt ex.
376455 350, 77-85
458642 350-400, 67-70,
462624 350-400, 75-86, 161/62cc ports, 7 bolt
ex.
468642 350-400, 76-up, small sparkplugs
471513 267,350, 79
517513 267,350, 79
3030817 400, 74
3636839 265, 55
3703523 265 Corvette, 55
3703524 265,55
3713358 265, 55-56
3713569 265, 55-56
3720991 265, 56-57
3731262 265, 56, 2x4 carb, Corvette
3725306 265, 56-57
3731539 57 Corvette FI
3731544 283, 57-61
3731548 283, 57-62
3731554 283, 57-61
3731556 283, 57 truck
3731762 265, 2x4 carbs, 56 Corvette
3737739 283, 57-62, Corvette, FI
3737775 283, 327, 62-67
3740997 283, 57
3743056 283, 58
3743096 327, 62-67 GMC truck
3747363 283, 57-61
3747460 283, 327, 59-67
3748720 283, 57-58,
3748770 283, 1x4 , 2x4 carbs, FI Vette, X58, stagger VC bolts
3748772 283, 58-61
3755537 283, 57-62
3755539 283, 58-62, stagger VC bolts
3755549 283, 57-62
3755550 283 Corvette, 59, stagger VC bolts
3755585 327 GMC truck, 62-67
3756519 283, 57-62
3760116 283, 60-64
3767460 283,327,60-64
3767462 327, 62-67, 161/65cc ports
3767465 283, 59-61
3767754 283 Power Pack, 59-61
3767792 283, 60-64
3770126 327, 69
3774682 283, 327, 60-64
3774684 327, Pass, Truck, 62-64
3774692 283, 60-61 Corvette
3774692 283, 58-64 Pass, Power Pack
3782461 327, 64-66 Double humpers or Camel hump 161/62cc port
3782461X 60-63, Larger intake runners, 172/64cc port
3782870 327, 62-37
3789817 327, 62-67
3789935 283, 57-62
3790721 283, 64-67
3792563 327, 65-67
3795896 283 Power Pack,63-65
3795896 327, 250HP Corvette, 62-64, 140/60cc ports
3798996 327, 63-67
3814480 283, 327, 60-67
3814482 327, 350, 62-67, 75cc, Lo compression head
3817680 283, 327, 63-67
3817681 327, 350, 62-67
3817682 283, 61-62
3836839 265, 55
3836842 283,327, 57-67
3837064 265, 283, 56-62
3837065 265 truck, 55-56
3837739 283, 57
3848720 283, 57-58
3849852 283, 57-67
3849935 283, 65-67
3852174 327, 62-64
3854520 283, 327, 62-67, 140/60cc ports
3870064 265, 283, 56-62
3870065 265 Truck, 55-56
3876775 283, 327 210 HP Camaro, acc. bolt holes on one end only
3884520 283, 327, 60cc, some made in canada
3890462 302, 327, 350, camel hump, 161-165cc intake port
3901068 350,285HP Crate motor, 64cc, 72ºintake bolt angle
3911032 307, 327, 68, W/O acces. bolt holes
3912264 283, 58-62
3912265 283, 63-64
3912311 327, 67
3912313 327, 65-67
3917290 307, 327, 67-68, 142/59cc ports
3917291 302, 327, 350, camel hump, 161/65cc ports
3917292 327-350 Corvette, camel hump, 68
3917293 307, 327, 75cc, 144/58cc ports
3927185 307, 327, 69cc, 69-70
3927186 302-350, camel hump, 63cc chambers, 161/65cc ports
3927187 350, camel hump, 64cc, 69-70
3927188 307, 74cc
3928455 302, 327, 68
3928494 327, 350, 68
3928495 327, 68
3931633 307, 68-72
3931635 250, 68-76
3931637 327, 68-69
3931638 327 truck, 68
3932441 350, 76cc, 161-165cc intake port
3932441X 350, 80cc, 1.94-1.5 valves, 161/65cc port
3932441X 400, 80cc, 1.94-1.6 valves, 161/65cc intake port
3932454 307, 69
3946812 350, 69
3946813 350, 69-70, 138/72cc ports
3747041 302, 350, 64cc
3951598 400, 70, 76cc
3964286 350
3970126 327, 350, 67-70
3973414 350, 70, LT1, 64cc, camel hump
3973487 350, 71-76,
3973487 350, LT1, 75cc, 161-165cc intake port
3973487X 350, 75cc, larger intake port
3973493 400, 71, 76cc
3986316 350 Corvette, 71, 76cc
3986336X 350, 76cc
3986388 307, 350, 68-76
3986339 307, 350, 71, 75cc
3986339X 307, 350, 75cc
3991492 350 LT1, 70, 64cc, straight plug, camel hump
3991492 Over counter, strt or angle plug, 64cc, 157/62cc ports
3998916 350 LT1, 76cc, screw in studs, big valves?
3998920 350, 72-73
3998991 307, 350, 75cc, 72-73, 73 had hard seats
3998993 307, 350, 76cc, 72-73, 15-164/64cc ports, 73 had hard seats
3998993 350 Crate motor, current, Hecho En Mexico, 159/64cc ports
3998997 350, 400, 76cc, 72-73, hard seats in 73
3998997 305, 350, 161-165cc intake port, hard seats
4079261 350, 75.
10033867 Pontiac Alm. Race head, angle plug, 62cc, 196cc intake port,
23º, 2.10-1.625 valve
10045434 Pontiac Alm. Race head, angle plug, 55cc, raised runner, 15º
roll over
10051101 Bowtie, Alm, angle plug, 55cc, raised runner, 196cc intake port
10088113 350, 88-up, Corvette, Alm., angle plug, 58cc, .100 raised
D-port ex. 1.94-1.5 valve, 19 lbs.
10106178 350, 90, LT5, ZR1, DOHC, 32 Valve, Pass. Side
10106179 350, 90, LT5, ZR1, DOHC, 32 Valve, Driver Side
10110810 350 Gen.I, 93-up
10128374 350 GenII, LT1, 53cc, angle plug, Corvette, Alm., reverse flow
cooling, 168-175 cc intake port
10134352 Bowtie, Lo port, alm. 18º, angle plug, 45cc, 223cc intake port
10134363 Bowtie, Hi port, alm, 18º, angle plug, 45cc, 210cc
intake port
10134363 Bowtie, Hi port, alm., 18º, angle plug, 60cc, 215cc intake
port,
10134363 Bowtie, Hi port, alm., 18º, angle plug, 50cc, 250cc intake
port, CNC machined, 2.15-1.625 valves
10134363 Bowtie, Hi port, alm., 18º, angle plug, 65cc, 250cc intake
port, CNC machined, 2.15-1.625 valves
10134363 Bowtie, Hi port, alm., 15º, angle plug, 36cc, 223cc intake
port
10174389 350, LT5, ZRI, DOHC, 32 Valve, 91-95, Driver side
10174390 350, LT5, ZRI, DOHC, 32 Valve, 91-95, Pass. side
10185040 Symmetrical port, splayed valve, alm, 45cc, 263cc intake port,
1st design
10185040 Symmetrical port, splayed valve, alm, 45cc, 263cc intake port,
2nd. design
10205245 350, Gen.II, LT1, alm., 93, reverse flow cooling, 168-175
intake ports
10207643 350, Gen II, LT1, alm., 94-96, reverse flow cooling
10225121 350, LT1, ZR1, DOHC, 32 Valve, driver side, 94-95
10225122 350, LT1, ZR1, DOHC, 32 Valve, pass. side, 94-95
10239902 350, 96-up, GenII, LT4, alm., reverse flow cooling
10239906 350, Vortec 5700, L-31, 64cc heart shape chmber, 1.94-1.5,
170cc intake port
14010201 305, 84
14011034 Bowtie, Phase 2, iron, angle plug, 64cc, 2.02-1.6, 184cc .080
taller intake port
14011039 350 HP Replacement Alm.
14011049 Bowtie, Phase 6, alm., angle plug, 55cc, 2.02-1.6 or 2.1-1.65,
180cc intake port
14011083 350-300HP, Crate Motor, 64cc, 90º manifold bolt, hard
seats
14011083 350, 87-up, 64cc, center bolt VC, 72º manifold bolt
14014415 267, 305, 80-85
14014416 305 HO, 80-85, 58cc, 1.84-1.5, 165/59cc ports, 7 bolt ex.
14022601 267, 305 HO, 80-85, 58cc, 1.84-1.5, 7 bolt ex.
14022801 305, 80-85
14071114 350, 80-85
14079261 350, 86
14096217 350 285HP, Crate motor, 1.94-1.5, 72º intake bolts, 64cc,
center bolt VC
14101081 305, 87-88 Camaro, center bolt VC
14101083 350 285HP, or 300HP, Crate Motor, 1.94-1.5, 72º intake
bolts
14101128 350, Corvette, 86-87, alm., angle plug, 58cc
14102187 305HO, 87-91, 1.85-1.5, 58cc, 7 bolt ex.
14102191 305, 350, 87 up center bolt VC
14102193 305, 350, 87-up, 7 bolt ex.
24502559 Bowtie, SB2, alm., mirror port,
33417369 350, Gen.I, Crate motor, Hecho En Mexico, 7 bolt ex,
76cc, 1.94-1.5, flange VC holes, heavy castings
World Products Cast Iron Heads ( by part numbers )
4351 67cc, 162cc intake
port
4350 76cc, 162cc intake
port
4205 58cc, 162cc intake
port, 305 torquer
4256 67cc, 172cc intake
port, torquer
4257 76cc, 172cc intake
port, torquer
Trick Flow Twisted Wedge Alm ( by part number )
31400001 64cc, 2.02-1.6, screw in studs, guide plates,185cc intake
ports, candid valve angles
31400002 same 01, except with 72º intake bolts for 87-up
31400003 same 01, except with center valve cover bolt, 86- up
31400005 same 01, except 1.440 valve springs
31400006 same 01, except, with 72º intake bolts, old style valve
covers
Edelbrock Alm. Heads
6061 Performer RPM Bare head, angle plug, 70cc
6063 Performer RPM Bare head, straight plugs, 70cc
6071 Performer RPM Same as 6061 exc. complete
6073 Performer RPM 70cc, 170cc intake port, straight
plug, complete
6075 Performer 65-up, 70cc, 2.02-1.6, screw in studs,
guide plates, heat riser
6085 Performer 87-93, center bolt valve cover, 60cc
6087 Performer 87, center bolt valve cover,
60cc, 165cc intake port
7700 Vr. Jr. Race Heads, Bare, 71cc, 212-267cc port, CNC Machined,
2.08-1.6,
7720 Same as 7700 exc complete
Big Blocks
058 241/86 cc port
063 256/114 cc port
083 243/110cc port
215 256/114cc port
241 252/116cc port
280 256/114cc port
290 256/114cc port
290 262/115cc port small plug head
291 327/120cc port
340 320/120cc port
820 255/114cc port
840 326/120cc port
842 318/112cc port
990 323/127cc port
330864 396-454
70-81 Oval Port
330865 366-427
70-76 Truck HD
Oval Port
336781 454
73-85
Oval Port
343771 366-454
68-85 Truck HD
343772 366-454
76-84 Truck HD
Oval Port
346236 454
75-76
Oval Port
353049 400-402
70-76 Oval Port
473328 366
68-85
Truck HD Oval Port
3732791 348
58
3758379 348
59-61
3759256 348
58
3767738 348
59-61
3781147 348
60-61
Hi Perf
3795586 409
61
360HP
3814690 409
62-64
Hi Perf
3819333 348-409 62-65
Truck
3830817 409
63-65
340 HP
3837731 409
63
RPO Z11
3852583 409
65
400 HP
3856206 396
65
Oval Port
3856208 396
65
Corvette 425 HP Sq. Port
3856213 366
66-82
Oval Port
3856260 396
68
3872702 396-427 66
Oval Port
3873858 396, 427 66
Sq. Port
3876875 427
77-85
Truck Oval Port
3904390 396-427 67
Oval Port
3904391 396-427 67
Sq. Port
3904392 427
67
Sq. Port Alm L-88
& L-89
3904393 366
66-68
Truck Oval Port
3909802 396-427 67
Oval Port
3917215 396-427 68
Oval Port
3917219 366-427 68-85
Truck HD Oval Port
3919840 396-427 67-69
Sq. Port
3919842 396-427 68-69
L-88 & L-89 Alm
3931063 396-427 68-72
Oval Port
3933148 366-427 68-84
3933149 427
68-76
Truck
3946074 454
69-71
Alm. L-88, ZL-1, LS-6
3964290 400-454 70
Oval Port
3964291 402-454 70
Sq. Port L-78, LS-6
3965198 396
68-69
Oval Port
3975950 366-427 68-70
Truck Oval Port
3986133 366-427 68-85
Truck Oval Port
3986136 366-427 68-84
Truck Oval Port
3993820 400-454 71-72
Oval Port
3994026 454
71
LS-6 Sq.
port
3999241 402-454 72
Oval Port
6272292 402-454 70-75
Oval Port
14092359 427
86-88
Truck Oval Port
14092360 454
85-88
Truck Oval Port