Still looking for an OF or Stump Puller cam but stumped on that one...
 

While keeping and eye out for an OF or stump puller cam I stumbled on this one .
I always been avoiding rock and roll engineering and fulper stuff but...

What you guys think of that cam?

At 245 @ 050 its way too big for my strert driven 461 with 9.3 CR but maybe it would be usefull for someone here...

Meanwhile im still looking for an OF or Stump puller . .!

Peter

Contact Mike with this info.
He can grind you up what you need instead of waiting 1/2 a year for what you as of yet can’t find.

His cams are quite expensive! Not worth it

Still Looking?? Are cores not available? Dave doesn't have one? Bullet can't knock one out for you? The lobes are widely known, don't see why someone can't widdle one out as long as cores are available?

Ok fine, but what isn’t expensive these days?

I mean if your build hang up is a Cam and it looks like your gonna loose this coming summer season of driving then this has to be considered.

Everything is expensive now Steve. If it's cost that's the issue for the OP and he's trying to build an engine right now, it's probably not the best time in this economy, cheap prices are non existent.

I guess I don't understand his question and had me thinking cores aren't out there to be ground, because a cam is just a simple phone call away.

I believe they are the magnum lobes, but not certain. Go to the Comp Cams master lobe catalog, and find the lobes you want, SP, OF or RP....call them, tell them what LSA you want them on and they'll ship it to you in 2-3 weeks.

https://edelbrock-files-v1.s3-us-wes...be-Catalog.pdf

Here are numbers from a early Old Faithful cam as reported directly from a cam card:

Grind number P8 3122B / 3120B HR112.0
Rated 289 / 306 at .006" tappet lift
236 / 245 at .050"
112 LS / 108 ICL
Lobe lift .3800" and .3830"

Note the lobe numbers have the "B' suffix code.
Note the .006" numbers, 289 & 306, are slightly different than stated in the Comp Cams lobe section, 290 & 304

Roller cam lobe suffix codes

If ordered with a "B" suffix code after the lobe number the specs can be, but not always, slightly different.
Example, If you look at Dave Bisschop's custom grinds they are typically ordered with that code, and
it doesn't matter if it's a Magnum Hyd lobe or a Xtreme Energy hyd lobe.

And another thing to understand often the duration numbers that show up on the cam card are ever so slightly different than what the catalog lobes show, as the Pontiac cams are typically ground on a slightly different base circle than the sbc/bbc typically use, and that can result in minor changes.


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SD Performance revised Stump Puller:

Part number 51-000-11
Grind number: P8 3194B / 3196B HR112+5

281 / 287
230 / 236
.3890 / .3910
112.0 LSA / 107 ICL

His old Stump Puller used lobes 311B and 3122B / note it has less valve lift

As with the Old Faithful lobes these lobes can be ordered custom with any Comp Cams dealer if desired.

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In Larry's post number 4 he mentions Bullet and the fact if cores are available they could make a similar cam. Here is a example right from the Bullet Racing Cams hydraulic roller lobe list:

Lobe HR290/380
Advertised duration 290 degrees
236 degrees at .050" lift
159 degrees at .200" lift
0.3800" lobe lift

https://www.bulletcams.com/Masters/HRlobes.htm

For all practical purposes it is identical to Comp Cams lobe 3122 used for the intake side of the Old Faithful cam.
Same could be done for the exhaust.
And the cam could be ground with whatever lobe separation desired.


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Try LSM!Tom

Actually the last cam I bought came from Clay Smith.Came pretty quick.Tom

Is this a cam that you have or what you thought of buying?
I might be interested in if this is yours and I might have the cam
your looking for.

GT

Not sure the specs you are looking for but summit racing has this in stock

https://www.summitracing.com/parts/c...1/make/pontiac

Call Howards cams see if they have cores...
I have a new Comp Cams 232 / 242 @.050..... its on 108 Lobe Sep...........

I had a comp 288 just like that one and sold it to someone here many years ago.. maybe I should have kept it but just really wanted Daves OF cam at the time , should have pulled the trigger earlier

Sent you a message blueghost

Is it much more expensive to get a cam ground?

And BP 8022SP looks silly close to the revised OF cam. Am I wrong?

(HR) (Std Firing Order/ Std Journals) 282/288, 230/236, .510/.521, 112 LS with 1.5 ratio rockers

Butler uses Comp XE lobes and for the most part SD Performance uses Comp High Lift Magnum lobes. The XE lobes have shorter seat timing.

Similar conversation here: https://forums.maxperformanceinc.com...d.php?t=849037

Stated.... "And BP 8022SP looks silly close to the revised OF cam. Am I wrong?"

I presume you are referring to the OF 2.0

Unless the situation has changed the SD Performance revised version of the Old Faithful cam has been shipped without a cam card and with limited information provided. That information included the actual lobe lift and reported as 0.3910" intake and 0.4000" exhaust. With that and the .050" duration it's not hard to figure out the lobes it probably uses, If you presume they are ordered with a "B" suffix code as Dave typically does.

From this we can presume they are XE lobe 3196B and Magnum High Lift Lobe 3123B

Again, the "B" suffix code can, but not always, add an additional 0.001" lobe lift. Also it can, but not always, alter the .006" duration by 1-2 degree. The .050" duration will remain as in the catalog.


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send me a message about my cam if you would like to trade