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{{ImportedFrom|site=Xenonzcar|title=XenonZcar|url=https://dev.z31library.com/xenonzcar_archive/s30/cams.php.html|archive=https://dev.z31library.com/xenonzcar_archive/s30/cams.php.html|fetched=2026-05-15}} == S30 Camshaft Specifications == === L-Series Camshaft Specifications === During its thirteen-year lifespan in the Z series, the L Series motors came with a variety of camshafts. The chart below will help you identify your camshaft specifications, including some common aftermarket options. === Quick Links === == Stock Specs == | Engine | L24 | L26 | L28 L28E | L28E | L28ET | L28ET | L28ET | L24E | |---|---|---|---|---|---|---|---|---| | Head | E31/E88 | E88 | N42/N47, P79 | P79 | P90 | P90 | P90A | N47 | | Cam Mark | A | C | A | F | B | J | M | E | | Applied Date | All | All | Before 8/81 | 9/81 and After | Auto Before 7/82 | Manual Before 7/82 | All after 8/82 | All | | Part # 13001-XXXXX | E4126 | N3626 | E4126 | P7980 | P3026 | P9580 | P9980 | S6280 | | Intake Duration | 248 | 256 | 248 | 240 | 240 | 240 | 240 | 240 | | Deg BTC Intake Opens | 16 | 20 | 16 | 16 | 12 | 12 | 16 | 22 | | Deg ABC Intake Closes | 52 | 56 | 52 | 44 | 48 | 48 | 44 | 38 | | Int Center Angle | 18 | 18 | 18 | 14 | 18 | 18 | 14 | 8 | | Exhaust Duration | 248 | 256 | 248 | 248 | 248 | 240 | 240 | 240 | | BBC Exhaust Opens | 54 | 58 | 54 | 58 | 54 | 52 | 54 | 54 | | ATC Exhaust Closes | 14 | 18 | 14 | 10 | 14 | 8 | 6 | 6 | | Exhaust Center Angle | 20 | 20 | 20 | 24 | 20 | 22 | 24 | 24 | | Lobe Centers | 109 | 109 | 109 | 109 | 109 | 110 | 109 | 106 | | Cam Lift Intake | 0.289 | 0.276 | 0.289 | 0.276 | 0.276 | 0.276 | 0.266 | 0.276 | | Cam Lift Exhaust | 0.289 | 0.289 | 0.289 | 0.289 | 0.289 | 0.276 | 0.264 | 0.276 | | Valve Lift Intake | 0.413 | 0.394 | 0.413 | 0.394 | 0.394 | 0.394 | 0.378 | 0.394 | | Valve Lift Exhaust | 0.409 | 0.409 | 0.409 | 0.409 | 0.409 | 0.39 | 0.374 | 0.39 | === Aftermarket cams === There are many different Manufactures that are making new or Regrind cams for the L-Series motors. Below you will find some of these cams and their specifications. == Colt Cams == | ID NUMBER | ? | DURATION | CAM LIFT | VALVE LIFT | LOBE SEP. | DESCRIPTION | | |---|---|---|---|---|---|---|---| | @.050 | ADV. | |||||| | C.556.S | INTAKE | 213? | 266? | .312 | .468 | 109 | MILD PERFORMANCE | | EXHAUST | 213? | 266? | .312 | .468 | No caps or springs required | || | C.540.S | INTAKE | 205? | 256? | .327 | .491 | 109 | MILD PERFORMANCE | | EXHAUST | 205? | 256? | .327 | .491 | ? GOOD WITH AUTO & F.I ? | || | C.542.S. | INTAKE | 224? | 280? | .340 | .510 | 108 | PERFORMANCE | | EXHAUST | 224? | 280? | .340 | .510 | Best all around Cam 3000-6500+ | || | C.557.S | INTAKE | 238? | 292? | .320 | .480 | 108 | STREET STRIP | | EXHAUST | 238? | 292? | .320 | .480 | 3500 - 7000 | || | C.543.S | INTAKE | 243? | 304? | .350 | .525 | 109 | RACE - OVAL TRACK | | EXHAUST | 243? | 304? | .350 | .525 | STRONG - 4000 - 7500+ | || | C.575.S | INTAKE | 243? | 308? | .380 | .570 | 108 | RACE - OVAL TRACK | | EXHAUST | 243? | 308? | .380 | .570 | 4500 + UP | PLEASE NOTE: ALL PROFILES FROM C.540.S + UP REQUIRE CAPS AND SPRINGS F.I. WILL WORK WITH C.542.S WITH HIGHER COMPRESSION AND A WIDER LOBE SEPARATION == Integral Cams == The stage 1L - 2L performance cams are designed to work with the stock valve springs to 7000 RPM. The stage 3 - 4 road race cams require performance valve springs. All profiles are available on new Chilled Cast Iron Billets. When ordering, specify if you want a solid core billet (external oiling) or a rifle drilled billet (internal oiling). You can also specify a different lobe separation angle for no extra charge. | Profile | Seat Duration | .050" Duration | Gross Valve Lift | Lobe Separation | |---|---|---|---|---| | Stage 1L street | 280? | 232? | .450" | 110? | | Stage 2L street | 285? | 237? | .450" | 110? | | Stage 3 race | 300? I / 290? E | 262? I / 253? E | .535" I / .515" E | 104? | | Stage 4 race | 310? I / 300? E | 271? I / 262? E | .555" I / .535" E | 104? | For more information on these cams, please contact: [http://www.integralcams.com/nissanL6.htm Integral Cams, LLC] [(507) 645-9308](tel:5076459308) == Motorsport Auto == The cams offered by Motorsport Auto are quality pieces with cam profiles designed specifically for a Z's requirements. Note: All cams are measured at .050" lash. | Part # | Intake Lift | Exhaust Lift | Intake Duration | Exhaust Duration | Description | |---|---|---|---|---|---| | 10-2001 | .460 | .460 | 260 | 260 | Stage I, 70-83 Z/ZX Non Turbo | | 10-2002 | .480 | .480 | 274 | 274 | Stage II, 70-83 Z/ZX Non Turbo | | 10-2003 | .460 | .460 | 270 | 280 | Stage III, 70-83 Z/ZX Non Turbo | | 10-2004 | .495 | .495 | 290 | 290 | Stage IV, 70-83 Z/ZX Non Turbo | | 10-2005 | .560 | .560 | 300 | 300 | Stage V, 70-83 Z/ZX Non Turbo | | 10-2006 | .620 | .624 | 304 | 318 | Stage VI, 70-83 Z/ZX Non Turbo | | 10-0921 | .460 | .440 | 260 | 250 | Turbo Stage I, 81-82 280ZX Turbo | | 10-0923 | .460 | .440 | 260 | 250 | Turbo Stage I, 83 280ZX Turbo | | 10-0922 | .460 | .460 | 270 | 260 | Turbo Stage II, 81-82 280ZX Turbo | | 10-0924 | .460 | .460 | 270 | 260 | Turbo Stage II, 83 280ZX Turbo | == (JWT) Jim Wolf Technology == | Part Number | Intake Lift | Exhaust Lift | Intake Duration | Exhaust Duration | Lobe Sep. | |---|---|---|---|---|---| | A280Z-00C1M | .475" | .475" | 256 | 256 | 112 | NOTE: Duration measured @ .010. Also, not to be used in '83 P90a Hydraulic Cylinder heads. == Crane Cams == | Part Number | Advertised Duration Intake / Exhaust | Duration @ .050 Intake / Exhaust | Lift Intake / Exhaust | Lobe Separation | Description | |---|---|---|---|---|---| | DA-282-2-10 | 282 / 292 | 236 / 246 | .450 / .450 | 110 | Fair idle. Good mid range. Compression ratio required 10.5-12:1. | == Schneider Cams == | Part # | Intake Duration (ADV) | Exhaust Duration (ADV) | Intake Duration (.050") | Exhaust Duration (.050") | Intake Valve Lift | Exhaust Valve Lift | Lobe Separation | |---|---|---|---|---|---|---|---| | 17030 | 260 | 260 | 220 | 220 | .460 | .460 | 107 | | 17032 | 260 | 270 | 220 | 230 | .460 | .460 | 107 | | 17033 | 274 | 274 | 215 | 215 | .480 | .480 | 107 | | 17034 | 270 | 280 | 232 | 240 | .460 | .460 | 107 | | 17035 | 284 | 294 | 240 | 244 | .480 | .480 | 107 | | 17036 | 290 | 290 | 244 | 244 | .495 | .495 | 106 | | 17038 | 300 | 300 | 256 | 256 | .560 | .560 | 106 | | 17039 | 304 | 318 | 268 | 272 | .620 | .624 | 104 | | 17040 | 314 | 314 | 268 | 268 | .592 | .592 | 106 | | 17042 | 260 | 250 | 220 | 210 | .460" | .460" | 114 | | 17043 | 270 | 260 | 230 | 220 | .460" | .460" | 114 | | 17044 | 284 | 270 | 238 | 238 | .488" | .488" | 114 | Part numbers 17042, 17043, 17044 are Turbo Grinds. == Web Cams == | Duration (ADV) | Duration @ 0.050" | Valve Lift | Regrind Part # | New Cam Part # | Description | |---|---|---|---|---|---| | 248°/248° | 230°/230° | .430" / .430" | 20-000 | 20-002 | Offers improved mid range and top end, for use in stock or modified engines. Lash caps required. | | 260°/260° | 238°/238° | .450" / .450" | 20-050 | 20-052 | Strong mid and top end power for street / strip. Lash caps required. | | 252°/252° | 230°/230° | .488" / .488" | 20-010 | 20-012 | Very broad power band, good all around cam. Requires performance valve springs and lash caps. | | 262°/262° | 240°/240° | .488" / .488" | 20-020 | 20-022 | Good mid range and top end power for hot street cars with modified engines. Lash caps required. | | 266°/266° | 246°/246° | .510" / .510" | N/A | 20-032 | Strong mid range and top end power for rally and off-road racing engines. Lash caps required. | | 304°/304° | 284°/284° | .585" / .585" | N/A | 20-042 | Special racing profile. Tremendous top end power. Competition use only! Lash caps required. | == ISKY Cams == | 240/260 Part # | 280 Part # | Valve Lift | Advertised Duration | Duration @ .050" | Description | |---|---|---|---|---|---| | 715147 | 718147 | .475" | 270 | 222 | Stage I | | 715148 | 718148 | .480" | 280 | 232 | Stage II | | 715149 | 718149 | .490" | 290 | 242 | Stage III | | 715196 | 718196 | .530" | 306 | 264 | Competition? | | 715127 | 718127 | .595" | 306 | 274 | Competition | == Comp Cams == | Part Number | Adv Duration Intake / Exhaust | Duration @ .050 Intake / Exhaust | Valve Lift Intake / Exhaust | Lobe Sep | Description | |---|---|---|---|---|---| | 84-115-4 | 240 / 240 | 194 / 194 | .400" / .400" | 110 | Good OEM Replacement | | 84-119-4 | 252 / 252 | 204 / 204 | .410" / .410" | 110 | Better Torque & Power than OEM Cam. Smooth Idle | | 84-123-4 | 260 / 260 | 214 / 214 | .420" / .420" | 110 | Street Performance. Wide Power band. Smooth Idle | | 84-131-4 | 280 / 280 | 236 / 236 | .460" / .460" | 110 | Serious Street or mild Race Cam. Strong Mid Range and Good Top end. | | 84-135-4 | 292 / 292 | 246 / 246 | .480" / .480" | 110 | Serous Road Race cam. Strong top end. | === Sources Used === * 1970-1983 Datsun 240z-260z-280z-280zx Factory Service Manuals * ISKY CAMS * WEB CAMS * SCHNEIDER CAMS * CRANE CAMS * JIM WOLF TECHNOLOGY * MOTORSPORT AUTO * INTEGRAL CAMS * COLT CAMS [[Category:Imported from Xenonzcar]]
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