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Advertised duration vs 050

You also need to look at the advertised duration vs. the 0.050 duration. A cam with those numbers closer to each other stays open longer and should make more power than a cam with those numbers further apart, even if they're both "246 degree" cams. But, if gearing is totally open, you could potentially use deeper gearing to get more torque to.

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Mar 01, 2004 · Roller Vs. FlatThis is an intake lobe comparison of a flat tappet hydraulic versus a hydraulic roller lobe, with the same duration at 0.050 numbers for the flat versus roller camshafts. There are ....

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The advertised duration of the bracket master 0010 is 292, .050 duration is 230. Lift is .480. Now this new lunati voodoo cam 60104 (which Harold designed) has a similar duration at .050 at 233 degrees. But, its got more valve lift at .504 lift....and a lot less advertised duration at 276 degrees.

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Sep 16, 2006 · is to take the advertised duration, and subtract the duration @.050”. The larger the number, the slower the ramp rate, the more gently the cam lifts the valve. Slower ramp rates usually tend to have higher advertised duration, with less duration @.050”, and less lift. This tends to give the “big cam feel” of large advertised duration ....

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248/254 @ .050: Lift =.600"/.606" 286/292 Advertised Duration: Pistons Speed Pro L2166NF-30 Domed 5.3 cc : 331 cu. inches: Bore 4.030: Stroke 3.25: Rods 5.7 inch: Headers=Hedman 1-5/8" primary tubes: Piston to Deck +.004 out of the hole with .034 Quench.038 Head Gasket: 20 deg. Initial Timing: 37 degrees @ 2500 RPM Total Timing 14 degree vac ....

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Features & Benefits: Manufactured from high quality durable materials for long wear. Precision engineered for optimum fit and function. Designed for long-life and worry-free performance. Class 1 hydraulic camshaft that provides extra low end torque for light towing and performance applications..

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Why measure duration at 0.050 inch? When choosing a cam, should one compare advertised duration, 0.050-inch duration, or both? A. Advertised duration is the measure used by manufactures to rate how large a cam will act. However, because of the problems with how advertised duration is rated that are covered in answer 2, it can be very difficult ....

Score: 4.1/5 (30 votes) . Advertised Duration is the degrees of crankshaft rotation that the lifter is raised more than a predetermined amount.This predetermined amount varies between manufacturers. Duration at 0.050" is the degrees of crankshaft rotation between when the lifter is raised 0.050" and when it is 0.050" from its resting position. COMP Cams: Advertised Duration: Duration @ 0.050: Valve lift with 1.60 * Intake: Exhaust: Intake: Exhaust: Intake: Exhaust: LSA.

The connector is installed between the fuel line and the carburetor on 2-barrel MerCarb and 4-barrel Weber carburetors ;Advertised Duration (Int/Exh): 268/279 ;Duration @ Jump to Latest Follow Part of the 90 degree small block V-8 family of Ford engines, the 351 Windsor reached its peak stock horsepower in 1969 at 290 Compatible with MAF EFI Compatible with MAF EFI.

Jan 02, 2012 · Advertised Duration is the figure you usually see in the cam ads and hear about at those late-night bench races. The problem with advertised duration is cam makers use various methods of measuring it, making it difficult to compare cams from different makers. “Duration at .050” measures duration at .050 inches of valve lift..

May 01, 2008 · There are two types of durations, typically called "advertised" and "at 0.050." The difference is a matter of measurement, specifically when you consider a valve to be open. Advertised duration is ....

Duration is the amount of time that the valve is open in relation to crankshaft rotation. It is expressed in crankshaft degrees. If we have a cam with a duration of 300 degrees, the valve will be open for 300 degrees of crankshaft rotation. There are two methods used to describe duration. Seat-to-seat or Advertised duration and at .050 ....

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Dec 27, 2011 · I read in another thread that someone (Philip) was running 18 degrees initial timing on a SBC with a cam of about 270 -280 degrees advertised duration. My 383 seems like it needs more initial timing. It is just not pulling as hard as I expect it to. Sometimes if I mash it from a roll (2,000RPM) it will hesitate before pulling..

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Comparing .050" duration and advertised can tell you something about the aggressiveness of the lobes. Not the whole story, but something. Comparing Two cams with the same .050" but different advertised, the cam with the shorter advertised will have less overlap and likely more cylinder pressure.

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Duration may also refer to the number of degrees that the lift is greater than a specified value, e.g. duration at 0.050 lift. For a cam with timing 25-65-65-25, the intake and exhaust duration are both (25 + 65 + 180) = 270 degrees. Advertised Duration - a duration which is advertised without specifying the lift at which it was measured. These.

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Mar 01, 2004 · Roller Vs. FlatThis is an intake lobe comparison of a flat tappet hydraulic versus a hydraulic roller lobe, with the same duration at 0.050 numbers for the flat versus roller camshafts. There are ....

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Jul 11, 2018 · Why are you using @ .050 duration" You should be using advertised duration. If I plug my advertised duration numbers in, It calculates my valve closing and opening events properly and I get the same IEA numbers I'm currently using. The distance from valve setting only affects part of the table..

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My concerns as comparing cams is the difference in degrees between duration @ .050 and Advertised duration. I have always relied on the .050 figure to choose and compare cams. I have found a few choices that will work for me that have the same ish .050 figures but the Advertised number vary alot. EX: Crane has about 60-62* diff between duration #.

Careers. Fox Around the World. Advertise With Us. Media Relations. Corporate Information. Advertised Duration is the degrees of crankshaft rotation that the lifter is raised more than a predetermined amount. This predetermined amount varies between manufacturers. Duration at 0.050" is the degrees of crankshaft rotation between when the lifter is raised 0.050" and when it is 0.050" from its resting position.

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Feb 24, 2021 · Reading a Cam Card: Duration at 0.050″ Lift. The next line offers this cam’s specs at the industry standard of 0.050-inch of tappet lift. Since the crankshaft will turn fewer degrees between the 0.050-inch lift point on both the opening and closing sides, the duration specs will be smaller in degrees than the advertised specs..

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May 01, 2008 · There are two types of durations, typically called "advertised" and "at 0.050." The difference is a matter of measurement, specifically when you consider a valve to be open. Advertised duration is .... MATCHES NZ vs WI - NZ Won BRM vs SOU - BRM Won BLB vs MU - Preview IRE vs AFG - Preview SMS vs MU - MU Won. West Indies vs New Zealand. 2nd T20I. Zimbabwe v Bangladesh, 2022.

Mar 01, 2004 · Roller Vs. FlatThis is an intake lobe comparison of a flat tappet hydraulic versus a hydraulic roller lobe, with the same duration at 0.050 numbers for the flat versus roller camshafts. There are ....

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Most vendors don't advertise their memory trace layout, but you can make an educated guess based on the QVL. The majority of the CPUs will do 3466MHz or higher at 1.050V SoC voltage, however the difference lies in how the different specimens react to the voltage.

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May 01, 2008 · There are two types of durations, typically called "advertised" and "at 0.050." The difference is a matter of measurement, specifically when you consider a valve to be open. Advertised duration is ....

May 01, 2008 · There are two types of durations, typically called "advertised" and "at 0.050." The difference is a matter of measurement, specifically when you consider a valve to be open. Advertised duration is ....

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Comparing .050" duration and advertised can tell you something about the aggressiveness of the lobes. Not the whole story, but something. Comparing Two cams with the same .050" but different advertised, the cam with the shorter advertised will have less overlap and likely more cylinder pressure.

Q3. What is the difference between advertised duration and “duration at 0.050?” Why measure duration at 0.050 inch? When choosing a cam, should one compare advertised duration, 0.050-inch duration, or both? A. Advertised duration is the measure used by manufactures to rate how large a cam will act. However, because of the problems with how.

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Sep 16, 2006 · is to take the advertised duration, and subtract the duration @.050”. The larger the number, the slower the ramp rate, the more gently the cam lifts the valve. Slower ramp rates usually tend to have higher advertised duration, with less duration @.050”, and less lift. This tends to give the “big cam feel” of large advertised duration ....

Nov 08, 2012 · E.G., I have the Magnum 280 in my car. 280* advertised duration, 230* @ .050", .480" lift, on both the intake and the exhaust, 110* LSA, IC 106* The Xtreme Energy 268 is advertised as 268* Int/280* Exh, 224*/230* @ .050", .477"/.480", 110* LSA, IC 106*.

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I read in another thread that someone (Philip) was running 18 degrees initial timing on a SBC with a cam of about 270 -280 degrees advertised duration. My 383 seems like it needs more initial timing. It is just not pulling as hard as I expect it to. Sometimes if I mash it from a roll (2,000RPM) it will hesitate before pulling.

BIG difference between the 300 hp cam and 350 hp cam . My brother has the 350 hp cam , and it is just barely noticeable. ... 10,496 Columbia, MO, USA. Fwiw, the 300hp/ 327 hy- cam was the great little old -929 at 195/202, 112/108, .390"/.410" lift whereas the L-79 motor, 350hp/ 327 hy- cam was the great old -151 cam at 222/222, 112/108, .447"/.447.

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Most camshafts are listed by their advertised duration. You will need to look at the “cam card” to find the actual duration, which is usually shown as: Duration @ 0.050″. The advertised duration does not provide enough information for us. b. There are usually one or two different ways that a camshaft will list the lift specs..

Engle W90 Type 1 Camshaft (Cheater Cam), 1.1 or 1.25 Rockers is designed for 1.1 or 1.25 rockers, and it's specs are .295" Cam Lift, .325" Valve Lift (1.1 Rockers), 265 degrees of advertised duration, and 224 degrees of duration at .050", on a 107 Lobe Center.. 1 day ago · Thanks, Gary in N. Cam specs: 219/228 . 7L.

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Find Camshafts 272 Advertised Exhaust Duration, 110 Lobe Separation (degrees) and get Free Shipping on Orders Over $99 at Summit Racing!.

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Score: 4.1/5 (30 votes) . Advertised Duration is the degrees of crankshaft rotation that the lifter is raised more than a predetermined amount.This predetermined amount varies between manufacturers. Duration at 0.050" is the degrees of crankshaft rotation between when the lifter is raised 0.050" and when it is 0.050" from its resting position.

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Duration may also refer to the number of degrees that the lift is greater than a specified value, e.g. duration at 0.050 lift. For a cam with timing 25-65-65-25, the intake and exhaust duration are both (25 + 65 + 180) = 270 degrees. Advertised Duration - a duration which is advertised without specifying the lift at which it was measured. These.

The connector is installed between the fuel line and the carburetor on 2-barrel MerCarb and 4-barrel Weber carburetors ;Advertised Duration (Int/Exh): 268/279 ;Duration @ Jump to Latest Follow Part of the 90 degree small block V-8 family of Ford engines, the 351 Windsor reached its peak stock horsepower in 1969 at 290 Compatible with MAF EFI Compatible with MAF EFI.

Jul 14, 2015 · I don't know the advertised duration on your cam, but your intake centerline is within 1 degree of mine, and your intake duration at 0.050 is also within 1 degree...my cam is 226 on the intake with a 110 (109.6) ICL...yours is 227 on a 109...so the math will be basically the same..

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The three types of tasks are: Fixed Duration, Fixed Units and Fixed Work, often referred to just as Duration, Units and Work. At its most basic, the Collin definitions of these are: Duration: The overall amount of time given to accomplish a task - usually measured in days.

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Camshaft Valve Timing Degrees Calculator. Find out your camshaft's valve timing events @ .050" lift by inputting intake & exhaust duration @ .050", LSA, and intake centerline. This calculator is useful for finding out your IVC @ .050" number when your cam is a brand like Comp Cams which typically only provides you with an IVC @ .006" number..

Advertised and .050-inch duration are just two arbitrary points on the overall lobe shape and do not account for subtle shape differences. This calls into question the practice of picking a.

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Feb 07, 2014 · On a camshaft, what is the difference between advertised duration and duration at .050-inch lift? Camshaft duration is the period of time, measured in degrees of crankshaft rotation, that a valve is open. “Advertised duration” measures duration from the point where the cam manufacturer believes the lobe starts raising the lifter..

Features & Benefits: Manufactured from high quality durable materials for long wear. Precision engineered for optimum fit and function. Designed for long-life and worry-free performance. Class 1 hydraulic camshaft that provides extra low end torque for light towing and performance applications..

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How does the lift vs. duration affect the low end torque or overall power for a heavy vehicle? ... Howards HRS-CL120225-12 Duration at 050 inch Lift: 210 int./214 exh. Advertised Intake Duration: 262 Advertised Duration: 262 int./272 exh. Valve Lift with Factory Rocker Arm Ratio: 0.510 int./0.525 exh. Lobe Separation (degrees): 112 Howards HRS.

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Stud Mount vs. Shaft Mount vs. Full Shaft systems Article 5 Myths About Rocker Arm Weight and Valve Float. MORE VALVETRAIN TIPS Why Leading Cam Manufacturers Measure "Advertised Duration" at .004" Lifter Rise How To Compare Duration Specs Between Pushrod Cams and OHC!.

My 327 has a CompCams XS262S cam with advertised duration specified at .015" tappet rise. With .016" lash and 1.5 rockers, the valve starts moving at .011" tappet rise. So, the 262 degree intake spec is equal to a zero lash 262 cam being spec'd at .004" tappet rise right? Of course, Comp specifies their hydraulic cams at .006". Go figure.

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Feb 24, 2021 · Reading a Cam Card: Duration at 0.050″ Lift. The next line offers this cam’s specs at the industry standard of 0.050-inch of tappet lift. Since the crankshaft will turn fewer degrees between the 0.050-inch lift point on both the opening and closing sides, the duration specs will be smaller in degrees than the advertised specs..

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Feb 07, 2014 · On a camshaft, what is the difference between advertised duration and duration at .050-inch lift? Camshaft duration is the period of time, measured in degrees of crankshaft rotation, that a valve is open. “Advertised duration” measures duration from the point where the cam manufacturer believes the lobe starts raising the lifter..

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The 15 degrees that the calculator asks for is too small - adding in about 25 degrees would work for a relatively "steep" hydraulic roller cam like my Comp Cams Xtreme Energy (the difference in advertised and 0.050" duration being 52 degrees in this case), and something more like 30 degrees would be better for a traditional flat-tappet cam.

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Reading a Cam Card: Duration at 0.050″ Lift. The next line offers this cam's specs at the industry standard of .050-inch of tappet lift. Since the crankshaft will turn fewer degrees between the .050-inch lift point on both the opening and closing sides, the duration specs will be smaller in degrees than the advertised specs.

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Sep 16, 2006 · is to take the advertised duration, and subtract the duration @.050”. The larger the number, the slower the ramp rate, the more gently the cam lifts the valve. Slower ramp rates usually tend to have higher advertised duration, with less duration @.050”, and less lift. This tends to give the “big cam feel” of large advertised duration ....

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The advertised duration can be as much as 20 degrees, or even more than what the usable duration really is. What companies do, is gradually slope the lobe as shallow as they can for the first & last .050" of lift on the lobe. .

Mar 31, 2006 · This will change advertised duration numbers from cam to cam, or even within the same cam. Take a cam thats 280 advertised and 230 at .050. Say the advertised duration of that cam is measured at .004. If you "re-measure" that cam at .002(a lower lift point than .004), advertised duration will get longer than 280 degrees, but .050 will stay the same..

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The first 6 cams have a larger gap between the duration at .050 and advertised duration than the ones below. I read on several sites people using the below Melling and Clevite cams in there FE trucks were not happy with the performance.

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Short seat duration = less overlap = more low-mid RPM torque. If I put the .050" numbers into Desktop Dyno to compare torque curves, the Comp XE 212/218 cam is down on torque below 4,000 RPM compared to a 204/214 cam. However, if I use advertised durations, the Comp XE 212/218 (256/268 adv) makes the most low-mid RPM torque.

Divide the advertised intake duration by 2 Add the results to the lobe separation angle (LSA) ... SCR vs. DCR vs. duration. ... (SCR) with a 3.48" stroke and different camshaft intake closing points @ 0.050" tappet lift on Keith Black's dynamic compression ratio calculator. The calculator, starting at 8.25:1 SCR. The dynamic compression ratio.

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You'll see duration specifications at .050 inches. Cam manufacturers agreed on a standard to measure duration so all cams are measured the same way. The idea is to measure duration starting at .050 inches of tappet (lifter) movement. As the lobe lifts the tappet up, when the tappet moves .050 inches, the duration is measured from that point.

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