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DOUGHERTY RACING CAMS 530-672-2286 EMAIL |
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Camshafts for Porsche 911, 930, 964, 993 engines |
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All new 47mm or 49 mm chill cast camshafts use the later (1981+) style bolt and washer. |
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Model |
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Duration at 1mm |
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Duration at .050" |
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Valve lift |
Lobe separation angle |
Lift @ overlap setting |
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Porsche 2.7 CIS S |
I/E |
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226/206 |
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220/200 |
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.405"/.350" |
110 |
1.1 mm |
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Grind your 2.7 cores |
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Porsche 911 E
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I/E |
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238/226 |
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230/222 |
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.405"/.393" |
102 |
3.0-3.3 mm |
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Porsche 911 Solex |
I/E |
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248/236 |
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242/230 |
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.455"/.414" |
97 |
4.2-4.6 mm |
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Porsche 911 S MFI |
I/E |
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268/240 |
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263/235 |
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.455".399" |
98 |
5.0-5.4 mm |
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Porsche 911 SC /3.2 Carrera |
I/E |
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236/224 |
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228/218 |
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.450".395" |
113 |
1.4-1.7 mm |
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47mm |
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49mm |
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Porsche 964 C2 / C4 |
I/E |
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246/232 |
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238/226 |
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.470"/.430" |
113 |
1.26 mm |
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Porsche 3.8 Super Cup |
I/E |
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248/234 |
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242/228 |
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.490".455" |
112 |
2.0 mm |
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Porsche GT2 Evo |
I/E |
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254/238 |
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248/232 |
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.485"/.470" |
112 |
2.5 mm |
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Porsche 906 Carrera 6 |
I/E |
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290/262 |
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283/255 |
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.463"/.405" |
96 |
6.8 mm |
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Porsche RSR Sprint |
I/E |
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278/267 |
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272/262 |
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.470"/.450" |
101 |
6.2 mm |
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Porsche 3.8 RSR |
I/E |
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280/264 |
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275/258 |
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.490"/.490" |
109 |
4.6 mm |
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Dougherty Racing profiles |
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Duration at 1mm |
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Duration at .050" |
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Valve lift |
Lobe separation angle |
Lift @ overlap setting |
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All new 47mm or 49 mm chill cast camshafts use the later (1981+) style bolt and washer. |
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DC 10 |
I/E |
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242/228 |
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236/222 |
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.461"/.402" |
110 |
2.0-2.4 mm |
2.7 CIS upgrade |
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DC 12 |
I/E |
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240/232 |
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234/226 |
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.474"/.430" |
102 |
3.4-3.6 mm |
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DC 13 |
I/E |
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240/230 |
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234/224 |
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.475".425" |
113 |
1.6-1.8 mm |
High lift SC type cam |
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DC 15 Sport SC |
I/E |
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244/234 |
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238/228 |
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.451"/.395" |
113 |
1.8-2.0 mm |
3.0 8.5-1 compression |
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DC 19 |
I/E |
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246/232 |
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238/226 |
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.485"/.450" |
113 |
1.8-2.0 mm |
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Grind your SC / 3.2 cores
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DC-993SS |
I/E |
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248/234 |
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242/228 |
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.490".455" |
114 |
1.6-1.8 mm |
Hot 3.2L or 964 upgrade |
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DC 21 |
I/E |
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248/238 |
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242/232 |
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.490"/.470" |
112 |
2.0 mm |
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DC 24 |
I/E |
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254/244 |
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247/237 |
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.485"/.460" |
113 |
2.4-2.6 mm |
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DC-30 "Mod-Solex" |
I/E |
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248/236 |
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242/230 |
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.455"/.414" |
102 |
3.8 mm |
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DC 35 EFI or Turbo |
I/E |
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258/238 |
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252/232 |
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.490"/.470" |
112 |
2.4-2.6 mm |
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DC 35 carburetor type |
I/E |
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258/238 |
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252/232 |
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.490"/.470" |
102 |
3.8-3.9 mm |
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DC 40 "MOD-S" |
I/E |
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266/249 |
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259/242 |
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.474"/.440" |
102 |
4.5 mm |
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DC 43x-102 carburetor type |
I/E |
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264/248 |
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258/242 |
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.490".455" |
102 |
4.4-4.6 mm |
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DC 43-112 EFI or Turbo |
I/E |
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264/248 |
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258/242 |
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.490".480" |
112 |
3.0 mm |
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DC 44 |
I/E |
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264/254 |
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258/248 |
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.490".480" |
112 |
3.2-3.4 mm |
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DC 60 |
I/E |
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271/255 |
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264/248 |
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.485".450" |
102 |
5.0 mm |
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DC 65 |
I/E |
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272/258 |
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266/250 |
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.508".485" |
102 |
5.2-5.3 mm |
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DC 70 |
I/E |
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274/264 |
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268/258 |
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.505".485" |
100 |
5.2 mm |
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DC 80 |
I/E |
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283/265 |
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276/258 |
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.505"/471" |
100 |
6.2 mm |
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DC 85 |
I/E |
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286/264 |
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278/258 |
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.514"/490" |
100 |
6.1-6.2 mm |
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DC 100 |
I/E |
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292/274 |
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284/266 |
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.530"/.495" |
100 |
6.5 mm |
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Turbo specific profiles |
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Duration at 1mm |
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Duration at .050" |
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Valve lift |
Lobe separation angle |
Lift @ overlap setting |
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All new 47mm or 49 mm chill cast camshafts use the later (1981+) style bolt and washer. |
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Porsche 930 turbo |
I/E |
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214/202 |
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208/197 |
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.368"/.339" |
108 |
.80 mm |
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Porsche 930 turbo cheater |
I/E |
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226/214 |
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220/208 |
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.405"/.368" |
111 |
1.1 mm |
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Grind your 930 cores
49mm
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SC on Turbo |
I/E |
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236/224 |
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228/218 |
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.450"/.395" |
113 |
1.4-1.7mm |
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964 |
I/E |
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246/232 |
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238/226 |
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.470"/.430" |
113 |
1.26 mm |
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DC-993SS |
I/E |
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248/234 |
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242/228 |
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.490"/.455" |
114 |
1.6-1.8 mm |
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GT 2 Turbo |
I/E |
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254/238 |
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248/232 |
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.485"/.470" |
112 |
2.5 mm |
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DC 35-112 |
I/E |
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258/238 |
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252/232 |
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.490"/.470" |
112 |
2.4-2.6 mm |
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DC 43-113 |
I/E |
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264/248 |
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258/242 |
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.490"/.480" |
112 |
3.0 mm |
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DRC 935 |
I/E |
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266/266 |
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259/259 |
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.474"/.474" |
102 |
4.5 mm |
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All lift values are based on zero lash and theoretical rocker arm ratios. Your results may vary. |
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Copyright © 2023 Dougherty Racing Cams. Reproduction of contents is a violation of applicable laws. All rights reserved |
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Not affiliated with Porsche of North America nor Porsche AG |
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