The Thruth on Cam Advertised Duration Etc
 

Here is some good info to read. This is from a Evo 8-9. Yes I know they are two different motors but I use the numbers as a reference to convert to DSM specs e.i. intake duration @ .050 lobe lift: 211.5 is universal on cam analyzer. So the breakdown speaks for itself and gives an idea of the real numbers vs advertised numbers.
4g63 Camshaft Research: The truth shall set the tires free!!
It gets really good when they get to the Evo 9 FP4R cams on the cam analyzer. Here are the advertise specs of the Evo 9 FP4R version 1 & 2. Both have more duration then the DSM FP4R (from what I have researched every evo cam has more duration then the corresponding dsm cam).
http://store.forcedperformance.net/m...s/evo94rv1.pdf
http://store.forcedperformance.net/m...s/evo94rv2.pdf

If you want to cross reference here are some evo cams at 1mm advertised duration. Also Jun 272 peak lift is advertised as 10.8 but shows 0.41829 =10.6mm on the cam analyzer.
Cam Specs Thread - Updated - evolutionm.net
I will say this. I have to give props to Darren at FFWD. He is the only person my machine shop and I have ever seen that posted the true specs of cams. They have always been there. Most just dont understand them.
http://www.ffwdconnection.com/dsm/dks/dks3.html

Re: The Thruth on Cam Advertised Duration Etc
 

I ran IX 4R cams with stock springs...whoops :)

Re: The Thruth on Cam Advertised Duration Etc
 

To what rpm?

Re: The Thruth on Cam Advertised Duration Etc
 

Interesting that stock 9 cams are similar to the DSM HKS 272's.

Re: The Thruth on Cam Advertised Duration Etc
 

Heh this info is kinda old but good! Cams are a mystical and magical thing.

LOL I'm still loving this. I think the only thing that saved you was the rev limiter and some luck! Then again, Jim ran 4R's in his IX on stock valvesprings as well--to like 8400rpm on the drag strip!

Yea man, the stock mivec cams on the 9 and 10 are really pretty dang fantastic out of the box. With the right sized-snail they can go very far!

Re: The Thruth on Cam Advertised Duration Etc
 

I run FFWD KING KAMS. Almost everyone blasted them and called the Kelford and/or FP 5R regrinds/clones. That just verified to me what I already knew. Which is most don't have a clue about what they are looking at. Because the real specs of KING KAMS were posted right on it's page in the cams description from the cam analyzer. My from the cam analyzer my intake cam is bigger then DSM FP 5R's advertised duration and my exhaust cam is damn near bigger then the DSM Kelford 280 advertised duration and i mean damn near. I wanted to rev to the moon and back. Thats why I bought the KING KAMS and I got the last set made. But alot of people would have loved the cam. If they knew what they were looking at lol.

Re: The Thruth on Cam Advertised Duration Etc
 

I thought cams were just for that sweet sweet engine lope???

Re: The Thruth on Cam Advertised Duration Etc
 

7,800

Re: The Thruth on Cam Advertised Duration Etc
 

Update and a damn good read!. February 2014 issue of dsport magazine. They themselves just did a unbiased evo cam showcase. Part 1 only showed a few cams that were tested and all the other cams will be shown in part 2! They show the real duration (cam pro analyzer) vs advertised and also dyno'd them. I linked pics of the article. Which shows the kelford 264, 272, and 280 real cam data!!!!!! Down to the volumetric efficiency of the cams.....throughout the rpm range!!!


http://i307.photobucket.com/albums/n...ad8cd9254e.jpg
http://i307.photobucket.com/albums/n...af0bde5586.jpg
http://i307.photobucket.com/albums/n...e659b54e8b.jpg
http://i307.photobucket.com/albums/n...a31cea976b.jpg

Re: The Thruth on Cam Advertised Duration Etc
 

Impressive gains!

Re: The Thruth on Cam Advertised Duration Etc
 

Yep. Part 2 will have the other 14 cams they tested!!

Re: The Thruth on Cam Advertised Duration Etc
 

Hmmm Kelfords. I'd like to see GSC's tested.
Need to find a good replacement for these stockers.

Re: The Thruth on Cam Advertised Duration Etc
 

You'll see GSC cams. Although I haven't seen the results I'm take a shot and say the GSC will be close to the kelford's. We'll know soon

Re: The Thruth on Cam Advertised Duration Etc
 

I have Kelfords, this is good lol

Re: The Thruth on Cam Advertised Duration Etc
 

I just like GSC's because even though they are only a few years old, they re did them after about a year or so.
Basically they continue to improve their cams and released a set for stroker DSMs

Re: The Thruth on Cam Advertised Duration Etc
 

I too am very interested in gsc. I just wonder if all the big boys are running kelford because they are no doubt top two and maybe get a little incentive to run them? either way it's most likely a wash between them

Re: The Thruth on Cam Advertised Duration Etc
 

Hum, what about dial indecators, degree wheels, and solid lash adjusters. I have degrees cams a lot in the 4g63 and 6g72 motors and have a lot of good info written down.

Re: The Thruth on Cam Advertised Duration Etc
 

^well make a thread then.

Re: The Thruth on Cam Advertised Duration Etc
 

That would be some awesome info for us who still can't decide between them.

Re: The Thruth on Cam Advertised Duration Etc
 

Thruth lol

Re: The Thruth on Cam Advertised Duration Etc
 

Awesome isn't the word lol.

All I can say is this test is much more in depth and has better data then the AMS cam test article. It impressed me so much I subscribed to a 1yr subscription of DSport lol.

Re: The Thruth on Cam Advertised Duration Etc
 

mega awesome

Re: The Thruth on Cam Advertised Duration Etc
 

Ok I got the Dsport with all the cams. It has some very good info but not all of it is applicable because not all Evo cams have the same specs as dsm. The only ones I know that are same are Kelford, GSC, COMP Cam, and Tomei. They put alot of work into this test so I am not going to put the specs. Go out and get the mag. Here are what they tested and my theory of stating advertised duration not being correct compared to similar cams are proven on a few cams. Some of the results are very surprising.

Comp 264
HKS 272
Comp 272
Kel 264
Cosworth M1
Comp 280
GSC S2
Kel 272
Tomei 270
Buschur 272
Jun 272
Tomei 280
GSC R2
Kel 280
GSC S3
Tomei 290

Re: The Thruth on Cam Advertised Duration Etc
 

Ah Wtf I didn't get mine yet...I guess ill wait till Monday

Re: The Thruth on Cam Advertised Duration Etc
 

Wow they got GSC R spec cams. I might have to look at this issue

Re: The Thruth on Cam Advertised Duration Etc
 

r spec? I should have my s3 early next week can't wait

Re: The Thruth on Cam Advertised Duration Etc
 

It has some very good info. But not all of the info is applicable because not all Evo cams have the same specs as a dsm. The only ones I know that are same are Kelford, GSC (minus the spec r), COMP Cam, and Tomei

Re: The Thruth on Cam Advertised Duration Etc
 

R specs are for strokers I believe.

Re: The Thruth on Cam Advertised Duration Etc
 

I spoke to GSC when the R2's first came out last year and as of this time they are still only offered for Evo's. I do not see DSMers supplying enough demand for them to make a DSM R2.

Re: The Thruth on Cam Advertised Duration Etc
 

so how did the s3 do compared to the kelford 280

Re: The Thruth on Cam Advertised Duration Etc
 

I heard the larger S3's have not to long ago been revised and out perform the slightly smaller Kelford 280's something nasty!!! But the smaller advertised duration 226/226 Kelford 272 not only makes more power than the larger advertised duration 230/230 GSC S2. Test show that the Kelford 272 are actually larger. Verifying what I have stated. That advertised duration BS don't really mean nothing. The test also show that the TOMEI 280'S almost mirror the GSC SC3 in performance!!

Re: The Thruth on Cam Advertised Duration Etc
 

ouch on bc. If I were doing a test I would do the same thing or have a third party access cams for me.

Re: The Thruth on Cam Advertised Duration Etc
 

I feel they didn't want to be up against the elite lol. Theythrow the cams in a random car with results that will have ton a variables. Then sit back watch the results.

Re: The Thruth on Cam Advertised Duration Etc
 

Yup cant say it any better, proof is always in the pudding as they say!!

Re: The Thruth on Cam Advertised Duration Etc
 

I must be saying something right lol. Brian Crower reached out and contacted me stating I am correct on the way I am comparing cams. They also stated they are/have revised some of their cams. The new BC 284/280 advertised specs are right there with GSC S3 and Kelford 280. Then they gave me the advertised specs on their soon to released BC 276 cam.

Re: The Thruth on Cam Advertised Duration Etc
 

I'd have to see them tested to trust them.

A few DSMers have the R spec cams

Re: The Thruth on Cam Advertised Duration Etc
 

What are r spec cams? I believe what they are saying. They have info on new BC 284/280 cam. It was put on their website last year. Look at it compared to the FP 5R cam. It's just slightly smaller

BC 284/280
http://www.briancrower.com/makes/mit.../bc_0103-2.pdf

FP 5R
http://store.forcedperformance.net/m...ds/dsmfp5r.pdf

Re: The Thruth on Cam Advertised Duration Etc
 

^ he already answered that. stroker cams. buy gsc or kelford and stop pretending you want something else ftw

Re: The Thruth on Cam Advertised Duration Etc
 

That's funny lol. Because last I checked with GSC the R2 was not made for DSM's. That was last year and not even sponsored DSM's I personally know could get R2's. I just spoke to GSC at 7:30am today and was verified that info is still accurate.

Do not get my intentions confused. I just post accurate info. I am no fan boi to any company lol. BC asked me if I were interested in running their cams. I thanked them. Then I told them they don't offer a cam big enough to support my setup lol. I run what I want in my car lol. FFWD KING KAMS!

Re: The Thruth on Cam Advertised Duration Etc
 

I know I've seen a set for sale on the link forums.

You should post this info there, that is easily the most tech forum for DSMs right now.