Widening their separation angle helps increase upper rpm power output. A 350cu in oval track racing engine, for example, often runs on a narrow lobe separation angle of 106 degrees. Effect Of Changes In Cam Timing And Lobe Separation Angle The following tables illustrate how variations in lobe separation angle and cam timing will effect the behavior of the engine in which the camshaft is installed. For instance the old PS truck motors. But at 108 you will be in a good area. Lobe separation, or lobe separation angle, is the distance (in camshaft degrees) that the intake and exhaust lobe centerlines are spread apart. It a 355. thanks in advance Hulk Aug 20, 2006 #2. lluciano77 Guest. Do you have the cam card? Cam Lobe Separation Lobe separation can be measured using a dial indicator and a degree wheel, but is usually calculated by dividing the sum of the intake centerline and the exhaust centerline by two. Crane Cam 274' int/274' exh/ 106' lobe separation. As an example, many Crane street camshafts are … When considering whether to go a 106, 108, 110, 111 or 112 lsa all the other valve timing events would ideally be about the exact same on each cam. This is ground into … A 110 will build slower, have a lower peak torque but hold onto it longer. If it really is a 106 LSA, that's too narrow for a 351C with the sort of duration and specs you are talking about. the specific numbers (durations, lobe separation angles, etc) are not where the trends lie. What does it do? The number of degrees between the intake and exhaust lobe centerlines establishes what is called the lobe separation angle. You're just widening or narrowing the Intake vs … If you shift at 7500-7800 add 4-6 degrees to both intake and exhaust and spread the lobe separation to 108-110. Again this is dependent on your shift rpm and assuming you truly have 14-1 compression. the specific numbers (durations, lobe separation angles, etc) are not where the trends lie. In the right combination 106 separation might even be better. ditch the hydraulic roller and go to a mechanical roller with around 250 deg @ … A 110-degree lobe separation angle means that the peak opening points of the intake and exhaust lobes are 110 degrees apart. The dyno plot however, shows how different each cam really was. Crane Cam 272' int/272' exh/ 110' lobe separation. 114 LSA would be narrow, yet a 360 SS motor would die with a 114 LSA because the exhaust is way too early. Most of Comps street grinds are on a 110 LSA but are installed 4 degrees advanced on a 106 ICL. “Lobe separation angles,” he continues, “are influenced by the camshaft grind. IMO A 106* cam is good for racing, but usually not much good for the street. A wider lobe separation angle such as 112/114 degrees will give up power at the bottom of the range for power higher up in the rpm. 108 vs. 110 lobe separation angle?? Do you have the cam card? What I'm trying to do is not overcam this stock low compression truck motor that Im stuck with right now. We put it to the test and check out what the results are. I always recommend that you contact your favorite cam grinder for specific camshaft recommendations for your application. BUT I still want a noticeable idle. I also like the 106 lobe separation with the intake on 103. Lobe Separation or Lobe Center is simply the distance between the peak opening points on the Intake and Exhaust lobes. Its all relative. SBC Cam Gurus - Need help. 110 + 4 means that the Lobe Separation Angle is 110* and the cam shaft has 4 degrees of advance built into it. Comp Cam 268' int/268' exh/ 110' lobe separation. Most of Comps street grinds are on a 110 LSA but are installed 4 degrees advanced on a 106 ICL. Use more stall speed with an automatic transmission. I ran a 108* LSA street roller cam in my old 383 and it was OK, as long as you keep the duration conservative you can get away with a little tighter lobe sep. Just don't get too agressive with duration AND lobe separation or it will be unbearable on the street. 114 LSA would be narrow, yet a 360 SS motor would die with a 114 LSA because the exhaust is way too early. yet the 106 … My opinion is your best choice is 108 deg of lobe separation with the intake centerline in around 106 to 107deg. A 106 LSA (Lobe Seperation Angle) will have peak torque early and fall off faster at higher rpms. Summit Cam 282"/282" 114' lobe separation. ditch the hydraulic roller and go to a mechanical roller with around 250 deg @ … If it really is a 106 LSA, that's too narrow for a 351C with the sort of duration and specs you are talking about. In the right combination 106 separation might even be better. The lobe separation angle of a camshaft is typically determined by the engine’s purpose, its displacement and its compression ratio. Can Camshaft Lobe Separation Angles give you more performance. Re: 110 vs. 112 lobe seperarion on a cam 04-10-03 10:20 AM - Post# 209744 In response to BowtieFreak There may be little difference in the 2 degrees you mention. For instance the old PS truck motors. The 106 vs 110, the 106 would have a lot more overlap, be much more lopey, and it … Its all relative. SBC Cam Gurus - Need help. A heavy car with too much duration will like the tighter LSA since it will bring torque on at lower rpm (coming off the turn). You'll have alot more power down low where it counts in a street car with the 106 as well, I have 250/262 @ 50 on a 106 and I have 6" of vac at 900rpm but at 1100 I have 10" and the brakes work fine, The 106 will give you a narrow powerful power band.