Cam Degreeing

[Purple440]

Can anyone tell by my cam card - http://www.holley.com/data/Products/Technical/00032.pdf - what degree my cam should have been installed at?  It doesn't seem to explicitly say how to install it.

Thanks,

- Doug

[firefighter3931]

Doug, the cam card is showing an intake centerline of 107* which is 2* advanced. Check with Lunati and see what they recommend for this grind. Your's might be advanced several degrees which would account for the high dynamic compression readings. 

Fwiw, that's a very old grind with lots of seat timing and modest ramp speed/lift. The newer profiles are much better in terms of idle quality and power under the curve. 



Ron

[Purple440]

Doug, the cam card is showing an intake centerline of 107* which is 2* advanced. Check with Lunati and see what they recommend for this grind. Your's might be advanced several degrees which would account for the high dynamic compression readings. 

Fwiw, that's a very old grind with lots of seat timing and modest ramp speed/lift. The newer profiles are much better in terms of idle quality and power under the curve. 



Ron

Yep, tried Lunati today and they were closed.  Will call tomorrow and get that info.

I know I know!!!  I've been trying to get my partner in crime (dad) and my builder to get an Engle or Lunati or that Crower you pointed me too.  I DO understand why those are better and I'm TRYING to explain to them the benefits but it's a democracy in my case and I'm being out voted 

We keep going back and forth on getting this cam to work for us vs getting the RIGHT cam...keeping the same cam means a big stall, more initial and less total timing, more gears, ect ect ect....or just getting a nice new Engle/Voodoo/Crower.....ugh it's frustrating.

sry to vent lol but it's building up in me like my 170psi cranking compression 

Our messages back and forth that been a tremendous help and I've been forwarding your comments on to the appropriate people:)  I think your response here will help my cause!  Keep it coming plz 

- Doug

[Challenger340]

WOW !

Took a 'Boo at that camcard ?

Seems to be very old technology involved in this grind, not sure what they were trying to do there ? But I ain't no expert.

They want 107 ATDC installed, yet the 050 events rely upon alot of initiated port flow, at low/slow ramps to scavenge with the 12*@050 overlap.
"revvers" in the 230'ish range at "that" lobe seperation, I would have thought, would probably show around 14-16 tilted closer to Intake, with the 4-6* exh closing point, favoring the Intake/234'ish @ .050
I DUNNO !
IMHO, not a good bet, probably better to update the bumpstick, especially if you've got anything other than BONE stock heads, or any headwork at all.

I'm with Ron...update !

Just my opinion, Bob out.

[Purple440]

Well I just talked to Lunati and he said the cam should be degreed at 107*.  He also said that my cylinder pressure in the 170's is fine and that 180's would be more what he'd be expecting....