[STEELCITYFIREBIRD]

51-314-4 http://www.compcams.com/Company/CC/c...csid=1210&sb=0

51-116-3 http://www.compcams.com/Company/CC/c...px?csid=6&sb=0

Anyone have any experience or insight here?

[74Grandville]

No experience, but the 51-314-4 does not even look close to an 041. I'd go with the 51-116-3


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[dragracerx2813]

The 51-116-3 is a very good cam. Makes good power and is very street able in a 455.

[steve25]

The first Cam is very much like a Crane custom ground roller that I used in my 455 over 30 years ago, other than my Cam had only …469" lift with 1.5s.
It ran very well with stock chambered 1971 #96 heads and pulled good vacuum even before I placed the Blower on top!

[jamaca85]

the 116 cam is with 1.65 rockers.the lift on the cam is abt 470 aprox with the 1.5 rockers. they should state that on the cam card somewhere.

[ponyakr]

That first cam is an XE series steep ramp cam.

If I wanted to run something similar to an 041 grind, but didn't like Rhoads lifters, I'd go with the Howards 410051-14, or back off to the Crower 60243.

https://www.summitracing.com/parts/h...w/make/pontiac

This Lunati is similar, but with a 110 LSA.

http://www.lunatipower.com/Product.aspx?id=1764&gid=279

[vitamin c]

I cant give you any comments really because I haven't run the car enough before doing a mini mechanical restoration, but the 74 SD I picked up late summer has the 51-314-4 in it. Test driving the car before I purchased it seemed as if it was short on bottom end power, and light on vacuum for the brakes. I will be finishing a tune up here soon and will be able to give some vacuum readings and such, but with winter here wont be able to drive it for some time.

[steve25]

Mill your SD heads .060" to get the comp up from 8.4 to near 9.3 and not only will your vacuum come up , but so will the motors power along with improved idle.

[1968GTO421]

Just for FYI the Lunati 041 cam is this one:

http://www.lunatipower.com/Product.aspx?id=1755&gid=340

[STEELCITYFIREBIRD]

With different lifts where the #'s are taken from, are these very similar cams on a tighter LCA or much different animals? I have no clue how to convert or if anyone has used the 51-314-4.
This is way beyond the scope of my ability to convert to comparable #'s, hoping for some more definitive differentiation.
The 51-116-3 looks to be a very viable 041 clone, the other ?????

[Hillard]

If you are looking for a RAIV replacment cam the Melling SPC-8 is a direct replacement. The Crower 60919 is also a RAIV replacement cam and I've used it many times. It works great. https://www.crower.com/media/pdf/2008b/126-128.pdf. I think if you do a search on here you'll find lots of people like it. I'm curious though why you want it. What's your combination? Maybe something else would work better. Cubic inch? compression? headers? auto or manual trans? Converter? gear ratio? Street? Race? Street/strip? All of these need to be taken into consideration when picking a cam.

[ponyakr]

Originally Posted by 1968GTO421

Just for FYI the Lunati 041 cam is this one:

http://www.lunatipower.com/Product.aspx?id=1755&gid=340

Yeah, there are several vendors who sell their version of the 041 clone. Some of these are probably the same cam. Don't know who actually grinds their own cams.

http://www.ebay.com/itm/Engine-Camsh...3D252651405427

https://www.summitracing.com/parts/crn-969681

http://www.jegs.com/i/Crower/258/609...FW0BoCWAjw_wcB

http://www.edelbrock.com/automotive/...7157&submit=go

http://www.ebay.com/itm/Pontiac-Ram-...1Uwp5F&vxp=mtr

The Wolverine # was WG-1014. A quick Google search did not find anybody selling that cam. I read that Crane bought Wolverine. So they probably dropped that part number, in favor of the Crane version listed above.

http://ronspontiacpage.com/reference.../wolverine.htm

This is probably a good thread to list all the 041 clones currently available. So, if ya'll know of others, please post the links.

[400 Lemans]

The first cam 51-314-4, is the same cam that Half Inch Stud recently installed in his gto. Dont think he cares for it compared to the one it replaced.

[STEELCITYFIREBIRD]

Likely too much time off for the Holidays has me searching around the net more than I should. This "other 041" grind just caught my eye, as I have never seen or heard mention of it before.

What I am guessing here is comp pulled the LCA in 4 degrees and recommends installation 4 degrees advanced from that. Every thing else seems a difference measured in frog hairs?
So I surmise this is cam is intended to have some added low end torque over the tried and true, and beloved 041, at the expense of idle quality compared to the factory grind?

HIS is the lab rat on this one, a 455 with 48 heads!!
What CR does that work out t??
I'm over 11:1 in a 400 w/#48's.

[ponjohn]

Originally Posted by ponyakr

That first cam is an XE series steep ramp cam.

If I wanted to run something similar to an 041 grind, but didn't like Rhoads lifters, I'd go with the Howards 410051-14, or back off to the Crower 60243.

https://www.summitracing.com/parts/h...w/make/pontiac

This Lunati is similar, but with a 110 LSA.

http://www.lunatipower.com/Product.aspx?id=1764&gid=279

No it isn't.

The cams you speak of are XE274 XE284.

I'd consider the 60919. Many proven combos here with it.

[NeighborsComplaint]

Originally Posted by ponjohn

No it isn't.

The cams you speak of are XE274 XE284.

I'd consider the 60919. Many proven combos here with it.

The first one listed is a dual pattern with Magnum lobe profiles.

[ponyakr]

Originally Posted by ponjohn

No it isn't.

The cams you speak of are XE274 XE284...

The 51-314-4 is listed as an "Extreme Energy Drag" series cam. To me, that makes it an XE cam.

http://ronspontiacpage.com/reference-pages/comp.htm

Maybe this is an old, out of date CC listing. I have no idea.

It appears that this exact same cam is now listed as a "Magnum Muscle" series cam, instead of XE Drag. Don't know exactly when the name change came. ???

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

The XE274 has 44 degrees difference between adv dur & @ .050 dur. The 51-314-4 has 48 degrees difference. They both look like steep ramp cams to me.

https://www.summitracing.com/parts/cca-51-224-4

The 51-116-3 has 61 degrees difference. That is definitely not a steep ramp cam.

http://www.compcams.com/Company/CC/c...px?csid=6&sb=0

[Steve C.]

51-314-4

Hydraulic-Magnum Muscle Camshaft / single pattern cam

http://www.compcams.com/Company/CC/c...csid=1210&sb=2

Not a XE cam.


.

[STEELCITYFIREBIRD]

I'm not trying to choose a cam, just looking for WHY and for WHAT outcome, with all the smart guys here someone has to have an answer for me. I'm vaguely familiar with the different lobes, listed in the back of the old catalogs, as I recall from a LONG time ago. http://www.compcams.com/Technical/Ca...terCatalog.pdf

Same lobes, shifted placement, or entirely different lobes?



THANKS!

[ponyakr]

Originally Posted by Steve C.

51-314-4

Hydraulic-Magnum Muscle Camshaft / single pattern cam

http://www.compcams.com/Company/CC/c...csid=1210&sb=2

Not a XE cam.


.

I would not call that a single pattern cam, since the @ .050 dur is 5 degrees different. Also the 280 exhaust duration # might be a misprint, since it is listed as 288 in some places. Have no idea what the ACTUAL specs are.

https://www.summitracing.com/parts/c...hjkaArdm8P8HAQ

51-314-4 (280AH-10) HFT D 280 288 232 237 0.482 0.482

The intake lobe looks to be almost the same as the single pattern 280 Magnum--Grind #280H . But the grind number for the 51-314-4 is 280AH-10. Looks like a different grind # than the single pattern Magnum cam.

http://www.compcams.com/Company/CC/c...csid=1197&sb=0