#21  
Old 06-18-2021, 07:04 PM
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Quote:
Originally Posted by Gary H View Post
Anyone know for sure what the duration @.050 numbers are? The numbers Ken Crocie posted above are 244 252. That's a lot more duration than the factory 041 cam which is 230 240 The engine didn't idle like it had the 244 252 number IMO..
I have the same cam as posted earlier and agree obviously with Ken as I have the cam card and the Rhoads lifters to take care of that 244 duration at low street speeds.

Tom V.

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  #22  
Old 06-18-2021, 07:11 PM
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Ken, would the HC-03D be the same specs?
(4th version?)


I have docs showing different specs for that, most not much different but some.


HC-03D $238 304 312 244 252 .498 .508 .548 .559 108 116


041k & lifters $167 308 320 231 240 .470 .470 .517 .517 112 115




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  #23  
Old 06-18-2021, 08:07 PM
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I had an HC-02A (744HL) and it had similar .050 numbers as a RAIV but the intake lobe was advanced. Very tame stock type idle in a 455 with Rhodes lifters. The 041HL was definitely bigger as Ken Crocie said.

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68 GTO,3860#
Stock Original 400/M-20 Muncie,3.55’s
13.86 @ 100
Old combo:
462 10.75 CR,,SD 330CFM Round Port E's,Old Faithful cam,Jim Hand Continental,3.42's.
1968 Pontiac GTO : 11.114 @ 120.130 MPH

New combo:
517 MR-1,10.8 CR,SD 350CFM E's,QFT 950/Northwind,246/252 HR,9.5” 4000 stall,3.42's
636HP/654TQ
1.452 10.603 @ 125.09
http://www.dragtimes.com/Pontiac-GTO...lip-31594.html
  #24  
Old 06-18-2021, 08:30 PM
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CAMDOCTOR Specs for HC-03/63

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  #25  
Old 06-18-2021, 08:54 PM
KEN CROCIE KEN CROCIE is offline
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try again
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  #26  
Old 06-18-2021, 09:02 PM
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Like the 744 in my 400 but with AC need a 1/2 way decent idle.

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  #27  
Old 06-24-2021, 12:43 AM
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Now the HC-03 specs are sorted, how about some burnout pics and vids using it for a bit of fun lol. (Great sounding cam as well !!)

Pump gas 455, 6X heads, HC-03 with 1.65 rockers and 3.73 rear gear (Doug Nash 4+1 box) from about 20 years ago !!!!

2 gear burnouts, some tyre torture on launch and it even managed to pull the fronts power shifting into 2nd gear !!

Burnout vids

https://youtu.be/-pAjopaC4-4

https://youtu.be/fwRXlALY188
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Working on going faster (and now staying dry at the same time !!)
  #28  
Old 06-24-2021, 07:55 AM
KEN CROCIE KEN CROCIE is offline
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Johnta1 and others :
here it is 4:44 am and I'm losing sleep trying to answer your ?
The 500/504 cam was custom ground for us at Comp.
Lobe #s are 5214 int./5217 ex. On a late version we used the 5210 ex. lobe for .525 lift. These are based on the Magnum series of lobes.
No info in my files for other profiles used for the HC-03/63. The cam doctor report is for the 500/504 cam. was measured on 4-16- 1990

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  #29  
Old 06-24-2021, 09:35 AM
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Quote:
Originally Posted by KEN CROCIE View Post
Johnta1 and others :
here it is 4:44 am and I'm losing sleep trying to answer your ?
The 500/504 cam was custom ground for us at Comp.
Lobe #s are 5214 int./5217 ex. On a late version we used the 5210 ex. lobe for .525 lift. These are based on the Magnum series of lobes.
No info in my files for other profiles used for the HC-03/63. The cam doctor report is for the 500/504 cam. was measured on 4-16- 1990
Ken,
Is it possible that you still have the Cam Doctor files? While I don't have a Cam Doctor I do still have the Cam Doctor MS-DOS software.

Stan

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  #30  
Old 06-24-2021, 12:02 PM
KEN CROCIE KEN CROCIE is offline
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Stan: I don't have the files. Do you have the Cam Doc interface board? Sent my board back to Oz for repair/replace, never to be seen again!

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  #31  
Old 06-24-2021, 03:04 PM
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Quote:
Originally Posted by KEN CROCIE View Post
Stan: I don't have the files. Do you have the Cam Doc interface board? Sent my board back to Oz for repair/replace, never to be seen again!
Ken,
No I don't. All I have is the software and a few old cam files.

Stan

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