[GoGoat]

Has anyone used this cam. CCA- BP8023SP. I'm looking for a mild cam that sounds and performs good but want a decent idle with AT

[400 Lemans]

https://butlerperformance.com/i-2936...-journals.html

[Steve C.]

Dave Bisschop "revised" Stump Puller would be similar but with more valve lift, a good thing.
And it could be ground on the wide 114 lobe separation by him or any other source if desired.

Revised Stump Puller
Comp lobes 3194 and 3196

281 / 287
230 / 236
.3890 / .3910
.583" / .586"
112LSA
( Dave has it ground with 5 degrees advance )

( Information provided in this post does not represent a product endorsement. And unless specified it is not based on personal experience and is offered for general interest only )



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[Formulajones]

What size engine is this planned for?

If for a 455, I'd say that cam being only 230 @ .050 and on a 114 LSA will idle very smooth and provide plenty of vacuum for power brakes. It's really not a large camshaft at all for a 455.

Here's an example of a 455 I built, with a larger camshaft, 239 @ .050 and on a tighter 112 LSA and as you can see, it has a very mild lope and yet still makes 12+ inches of vacuum idling at 800 rpm way up here at 5,000 feet elevation (would be 15+ at sea level). Works the power brakes perfectly.

https://youtu.be/AOqwz3QlO5k

[Steve C.]

" It's really not a large camshaft at all for a 455"

Agree.

A fwiw, I did a edit regarding a note stating that my post for the above cam was not meant as product endorsement. More IMPORTANT I mention it to point out the additional valve lift.
Besides size of engine and bit of info on the lift curve in association with the heads in use would be helpful as well.


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[napster]

Originally Posted by GoGoat

Has anyone used this cam. CCA- BP8023SP. I'm looking for a mild cam that sounds and performs good but want a decent idle with AT

GoGoat,

I use the cam, but it has an LSA of 112. It is in a 433 RA IV. 447 HP, TQ 535. Both uncorrected numbers. Output is thru RA IV manifolds with 2.5 inch outlet. Also, the roller rockers are 1.65:1 ratio. Compression is 9.9. Carb is a Holley Street Avenger 770 CFM vacuum secondaries. Engine builder tried to talk me into long tube headers. He said it would add 30 HP.

Love the cam and sound. Here is a clip to view. https://www.youtube.com/watch?v=BAFVExVbLXY

[Cliff R]

We used a near duplicate of that cam in a 455 Super Duty build with low compression (apprx 8.8 to 1). I had ours ground on a 112LSA. It idled dead smooth clear down to under 600rpm's without the first hint of "lope". Very mild at a glance and as mentioned a pretty "small" cam in a 455 build. Cam card and dyno sheet below.....Cliff

[Steve C.]

Butler hyd roller cam on the intake side uses the common Comp XE lobe 3315 and the 3194 is a XE lobe as well, both with the same .050" duration but the 3194 lobe has more .200 duration & lobe lift.
Butler as noted has his custom ground with a wider 114 lobe separation. As noted Dave often custom orders cams with a 112 LSA.

Lobe 3315 / 151 degrees at .200" and .510" lift
Lobe 3194 / 157 degrees at .200" and .584" lift

( note those Comp specs listed are catalog numbers, if custom ordered with a "B" suffix code after the lobe number the advertised duration and/or lobe lift could, but not always, vary slightly. Example the Comp catalog will list the 3194 with 282 at .006" but when custom ordered it might come with 281. Similar situation as on Cliff's the cam card posted, note it has 281 and not 282 as in the catalog )

.


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[Steve C.]

Are we replacing a Voodoo 60904 cam ??? IF so, can we expect a whopping big difference with similar .050" duration but going to a roller cam ???

"I have 2 455's bored 30, 1 with stroker crank. Both had Quadrajets originally , not sure size I believe they were 750 or 800 CFM. My builder had me get a 650 Ederbrock for the stroked motor, had Lunati voodoo cam #60904 . Seems like I should have more cfm. Motor dyno at 430 hp/515 ft/lb"

https://forums.maxperformanceinc.com...79#post5828979

The Voddo 60904 HFT cam:

276/284
233/241
.504/.527
110/106
( intake lobe has 146 at .200 on the intake )

The obvious, a wider 112 or 114 lobe separation with a roller lobe would probably improve the idle quality over a flat tappet lobe with the 110 LSA.


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[chiphead]

Originally Posted by napster

GoGoat,

I use the cam, but it has an LSA of 112. It is in a 433 RA IV. 447 HP, TQ 535. Both uncorrected numbers. Output is thru RA IV manifolds with 2.5 inch outlet. Also, the roller rockers are 1.65:1 ratio. Compression is 9.9. Carb is a Holley Street Avenger 770 CFM vacuum secondaries. Engine builder tried to talk me into long tube headers. He said it would add 30 HP.

Love the cam and sound. Here is a clip to view. https://www.youtube.com/watch?v=BAFVExVbLXY

Now that sounds rowdy. Does going from 428 to 455 really tame the cam's behavior that much?

[Formulajones]

Yep it will to some degree. General rule for every jump in engine size (350-400-455) you need to add about 10 degrees of duration for the camshaft to have the same basic power range.

Just listen to the clip I posted, with a 239 cam (9 degrees larger) and on the same 112 LSA, but in a 455. Its' not nearly as choppy as Napsters 230 cam in a 428. Same compression, same rockers.

[Steve C.]

Comp Cams take on making the lobe separation wider (larger LSA number)....

Raise Torque to Higher RPM
Reduces Maximum Torque
Broadens Power Band
Reduce Maximum Cylinder Pressure
Decrease Chance of Engine Knock
Decrease Cranking Compression
Decrease Effective Compression
Idle Vacuum is Increased
Idle Quality Improves
Open Valve-Overlap Decreases
Closed Valve-Overlap Decreases
Natural EGR Effect is Reduced
Increases Piston-to-Valve Clearance



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[GoGoat]

This cam would be going in a stock 67 400 with 670 heads, in a 67 GTO AT 355 rear. I may add add on air in future

[chiphead]

That would be pretty snotty (rough idle) in a 400, based on how choppy it is in the larger 428. I'd have it ground on a 114LSA and install 6* advanced to help the idle quality. Keep compression about 9.8:1 and add a 2800 stall converter and it should run good. This cam would like some head porting and good intake/exhaust to really work. Look at the peak lift numbers, they're above where a stock head flows well. Porting would take advantage of the valve lift.

[Formulajones]

A 400? I personally wouldn't recommend that cam for a 400 since you want a good idle for an automatic and plan on AC etc... Sounds more like a cruiser.

Are you willing to do a stall converter for it? If not, I'd be looking at something a pinch smaller.

[GoGoat]

Steve C.I have the same combo Voodoo 60904 in my 69 FB. Have same numbers for HP &TQ. 750 Eledebrock carb. All is great but idle is quite rough in gear. AT w/2500 TC. This is why I'm trying to get this next build closer to what I want.

[Steve C.]

It wasn't clear in the start of this thread so I had to guess.


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[Steve C.]

It wasn't clear in the start of this thread so there was obvious speculation on my part.




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[Rick Jones]

I put the Butler HR cam one step down from this (224/230 @ .05) in a 9.4/1 400, and it is a very good street cam. Just a hint of lope at idle and pulls very well when you get on it.

Rick