[JSchmitz]

I've read all of the threads about SD Performance and how busy Dave is. Some say try Facebook. I searched and wasn't sure exactly what to do there. I sent an email two weeks ago and have left several phone messages. I need to get my car back together. Can I buy the Stump Puller from Comp or other source? How about a close alternative? Most other cams with close to the same duration have a lot less lift it seems. Are the ramps just very aggressive on this cam? This is quite a bit of money. I don't want to $h!t the bed on this.

[steve25]

Please post up the info on your motor build and the cars gearing.

[Cliff R]

Dave went to basically a "one man show" a while back. I did the same thing here this year, no one left here but me and I'm loving it.

Bad news is that turn-around times are longer and it's impossible to return all the phone calls that come in.

Not sure how Dave operates but here if you want to get to the top of my call list tell me that in addition to wanting some free-tech with the carb build that you didn't buy ALL your parts someplace else and just want me to crawl thru the phone and fix the mess! If I'm going to make a couple of bucks for my time it really helps when I go thru all the phone calls and put them in chronological order to return them......FWIW.......Cliff

[JSchmitz]

Originally Posted by steve25

Please post up the info on your motor build and the cars gearing.

Below is my combo. EXCEPT I now have Butler/Edelbrock 290cfm D-ports. I'm also willing to go with a little more stall if needed. The Continental 13" doesn't stall very high coupled with a 3.23 gear. So, I have to be a little careful not to over-cam it.

1964 GTO post
'70 +.060" 455, w/TRW forged pistons, stock crank (ARP studs), and rods (w/ARP bolts)
'71 #96 d-ports, w/Ferrea "race" valves (light bowl and port work)
RAIV cam, w/1.65 Crower S.S. rollers
800 Q-jet
RPM intake
HEI Distributor
1-3/4" Doug’s headers
3" Pypes X, w/ dumps, 3” Pypes mufflers, & 2.5” Pypes tailpipes
400 turbo, w/13" Continental converter
3.23 cogs, in 12/10 bolt Olds posi rear, w/Southside lower arms
9" x 26" Hoosier slicks
Mallory 110, converted to bypass regulator
Car 3580# + me 175# = Race weight 3755#
Launch from 1000 rpm
Shift @ 5200 rpm
Idles @ 650rpm in gear w/ported vacuum
Best e.t. = 12.28, m.p.h. = 111

[AG]

You can order from Comp directly, Butler, etc. I've ordered from Comp and the last cams I bought I went through Brent Lykins., good to deal with.

[JSchmitz]

Originally Posted by Cliff R

Dave went to basically a "one man show" a while back. I did the same thing here this year, no one left here but me and I'm loving it.

Bad news is that turn-around times are longer and it's impossible to return all the phone calls that come in.

Not sure how Dave operates but here if you want to get to the top of my call list tell me that in addition to wanting some free-tech with the carb build that you didn't buy ALL your parts someplace else and just want me to crawl thru the phone and fix the mess! If I'm going to make a couple of bucks for my time it really helps when I go thru all the phone calls and put them in chronological order to return them......FWIW.......Cliff

I understand. Not trying to be judgemental. I'm just anxious to get this thing going. I've had the heads since September of last year. I started to try and get them installed months ago. Been struggling to get back on track here.

[Steve C.]

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

Both can be ordered custom with any Comp Cams dealer.

( no secrets, the cam card was posted here on PY )


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[JSchmitz]

Originally Posted by Steve C.

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

Both can be ordered custom with any Comp Cams dealer.

( no secrets, the cam card was posted here on PY )


.

I asked Butler if they could supply this cam. They said that the lobes are proprietary and I'd have to order it from SD. I guess I can call Comp or other dealer. Or pick another cam.

[72LuxuryLeMansLa.]

Originally Posted by JSchmitz

I asked Butler if they could supply this cam. They said that the lobes are proprietary and I'd have to order it from SD. I guess I can call Comp or other dealer. Or pick another cam.

B.S. I don't know why they would say that but oh well. Just give them the numbers that Steve supplied. I suppose if you say "Stump Puller" they get scared?

[tom s]

Pretty sure you can order the lobes from Summit if necessary.Ask for Scott Esterly,he is a pontiac racer.Tom

[JSchmitz]

Ok. Thanks for all of the suggestions. I like to support Pontiac specific shops. But I need to get going.

How about best hydraulic roller lifters? I also wanted to get SD to recommend springs for this cam. It's 1.820" installed height for The Edelbrock D-port heads with Com retainers, locks, etc.

[pastry_chef]

Originally Posted by AG

Brent Lykins., good to deal with.

lykinsmotorsports.com

[Steve C.]

Butler is full of poop ! Those lobes are not proprietary, they are right out of the Comp Cams catalog.

http://www.compcams.com/Technical/Ca...terCatalog.pdf

Page 21

If ordered with a "B" suffix code after the lobe number the specs can be, but not always, slightly different. Note the .006" duration. Also on occasions the lobe lift might be 0.001" larger. Then it is custom ordered with a 112 lobe separation instead of Comp's normal 110 LSA. Then Dave has 5 degrees advance ground into the cam.

And here would be the Butler order sheet:
https://butlerperformance.com/i-2462...tegory:1272239

Summit would use the same part number:

https://www.summitracing.com/parts/cca-51-000-11

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[Steve C.]

And a fwiw.... you do not have to order it with the "B" suffix code. Or the 5 degrees advance ground in. It would be the same part number, but the grind number would be:

P8 3194 / 3196 HR112.0


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[Scott65]

Crane 99893 spring were what he used on mine years back when he set them up. He shimmed them to the pressure he preferred, which I believe was 150#, but don't quote me on that. Do your own measuring, set them accordingly.

[Steve C.]

"...in most applications we use the Crane 99893 valve spring, installed at 1.790-1.810", I set the intakes on the tighter side of the tolerance, I test all the springs and always put the ones with the higher pressures on the intake valves, since the intake valves weigh more and also have the momentum of the charge pushing on the back side of the valve while the exhaust valve if anything has pressure pushing or drawing it closed and the valve is lighter. On my digital InterComp spring tester the seat pressures on a new set of springs will range from 147-157 lbs typically @ 1.800" and 380-390 lbs @ 1.200" open pressure."

Posted by Dave Bisschop

My comments ...

No matter what brand just remember never trust catalog stated pressures, they can and do vary. Test them at your intended installed height with the retainers you plan to use. Valve springs are one of the most critical and most overlooked components in your engine. Proper selection of the valve spring begins with identifying the application and selecting all of the valve train components to achieve the engine builders’ goals. Always run enough seat pressure to control the valve action as it returns to the seat. Heavier valves require more seat pressure. Strong, lightweight valves require less seat pressure. When in doubt, run slightly more seat pressure . . . not less. Remember springs will typically lose pressure after run in and with use.


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[AG]

I just set-up some Eddy RP heads using Crane 99893 springs at 150# seat pressure, worked great.

[Lee]

PM sent. I may be able to assist, if needed.

[Formula8]

I have the Old Faithful grind in my car. I ended up just looking up the grind numbers and working with Paul at Paul Knippen Muscle Motors (630) 400-4441 who ordered it directly from Comp. At the time, Paul got it to me for less than SD advertises. It arrived a few days later and I was good to go. Lower price, less shipping cost and faster to my door. Definitely worth a call, can't go wrong with Paul: https://www.facebook.com/PaulKnippensMuscleMotors/

[Steve C.]

Both Paul and Lee could custom order it.

Easy peasy lemon squeezy


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