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Cam identification/spec question


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#1 Hoosierquest

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Posted 30 March 2016 - 05:18 AM

I recently picked up another quest and was told that it had a cam installed but the previous owner did not remember any details.
I started digging through the paperwork file that came with the car and I came across the attached paperwork.
The first is the receipt from a place called artspeed in Los Angeles dated 1996. The other picture shows some notes written on the back I assume by the previous owner.
First off has anyone ever heard of this place?  Second, if those are indeed the cam specs they are quite different from any other cams I have seen for the G54B. Thoughts?


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<a href="http://s102.photobuc...t=100_2004.jpg" target="_blank"><img src="http://i102.photobuc...h_100_2004.jpg" border="0" class="linked-sig-image" /></a>

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#2 kev

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Posted 30 March 2016 - 09:18 AM

It's a custom grind for sure.   At first glance, the specs look good but would have to study it.  

How does it run?

#3 kev

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Posted 30 March 2016 - 09:22 AM

Btw; I see m&s in the corner.   M&S Recycling use to be a huge supplier of used conquest parts in the 90s.   Probably where the stock cam was obtained.    

I may be wrong but wasn't TEP working with M&S?

#4 scott87star

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Posted 30 March 2016 - 10:26 AM

With a 100 degree LSA and a duration of 239 @ 0.050" that thing is going to have a LOT of overlap.  Get a turbine A/R over 1 or don't bother.

Those are the correct stock cam specs.
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#5 Hoosierquest

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Posted 30 March 2016 - 03:41 PM

Hopefully I will tell you how it runs soon. The engine has been built but never ran, i can still see assembly lube on the cam.   Have some minor buttoning up to do and probably dropping the fuel tank since it has been 20 years since it has ran.

As fare as turbo size it is currently paired with a south flordia performance header and a 7degree clip tdo5 14g. Lol. Not quite the turbo you described.   Also supposed to be some heard port and polishing.
<a href="http://s102.photobuc...t=100_2004.jpg" target="_blank"><img src="http://i102.photobuc...h_100_2004.jpg" border="0" class="linked-sig-image" /></a>

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#6 Funky Phil

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Posted 30 March 2016 - 04:05 PM

Reciept says HR70
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#7 Hoosierquest

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Posted 30 March 2016 - 04:35 PM

Does HR70 have some kind of signifance or just pointing out the obvious?
<a href="http://s102.photobuc...t=100_2004.jpg" target="_blank"><img src="http://i102.photobuc...h_100_2004.jpg" border="0" class="linked-sig-image" /></a>

87, .030 over JE's, non jet head, small 16G. Delphi injectors.  Quest owner since 2000.

#8 Hoosierquest

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Posted 30 March 2016 - 04:54 PM

Well after some searching of HR 70 I see that has been related to TEP cams in the past. Maybe the same company ground this cam? May never know.
I had searched the whole number but not just the hr70.  Thanks for that tip.
I'll have to measure this thing in the future I guess.
<a href="http://s102.photobuc...t=100_2004.jpg" target="_blank"><img src="http://i102.photobuc...h_100_2004.jpg" border="0" class="linked-sig-image" /></a>

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#9 Guest_STARION_NORTH_*

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Posted 31 March 2016 - 05:36 AM

View Postscott87star, on 30 March 2016 - 10:26 AM, said:

With a 100 degree LSA and a duration of 239 @ 0.050" that thing is going to have a LOT of overlap.  Get a turbine A/R over 1 or don't bother.

Those are the correct stock cam specs.

100 degree lobe centerline just indicates the camshaft installed position relative to TDC, in this case it would appear to have been significantly advanced. Lobe separation angle is ground into the cam and cannot be altered (in SOHC configuration anyways) but intake centerline can be manipulated by either advancing or retarding the camshaft in relation to the crankshaft. I wouldn't be too worried about the amount of overlap based on the notes you have.

Edited by STARION_NORTH, 31 March 2016 - 05:40 AM.


#10 scott87star

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Posted 31 March 2016 - 09:11 AM

Good catch, my bad.  That's what I get for trying to decipher someone else's chicken scratches.
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#11 Funky Phil

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Posted 31 March 2016 - 10:17 AM

It may say HR70 but those numbers scratched on it make it look like a pretty big cam.

239@.05 is probably near 300dur seat-seat with the way a hyd lobe profile is and .330 lift (I imagine at the the cam) times rocker ratio is up there as well. Id like to know LSA
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#12 Hoosierquest

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Posted 31 March 2016 - 06:51 PM

Me too Phil,  I guess I am going to invest in a degree wheel and a dial indicator.
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#13 StarquestRescue

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Posted 31 March 2016 - 07:13 PM

I suspect you will find the cam measures more like this.

HR70 Cam Numbers

109 lc

26 Intake open
64 Intake Close

64 Exhaust open
26 Exhaust Close

@ .006 lash

.435 lift
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#14 Tim_C.

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Posted 16 April 2016 - 08:52 PM

I would just see how it runs. It is a .462 lift with the stock rockers. It should run fine even with the stock fuel system.
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#15 Hoosierquest

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Posted 19 April 2016 - 10:47 PM

That is the plan Tim, thanks for chiming in. I still have some work to get it in running order. (Down to the fuel system now) but I will update in the future. I will also eventually check the cam just for my own information as it will drive me nuts not knowing.
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#16 Hoosierquest

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Posted 18 June 2017 - 08:43 PM

Alright fellas, I'm just getting around to this point on the car.  I made a base to bolt into the cam tower and have the indicator inline with the valve. This engine has hydraulic lifters that have been in there since the mid 90's still showing assembly lube present. Using a feeler  gauge I removed what lash I could
.011 and took her for a couple turns around just trying to get a lift at the rocker idea. I came up with .403. Am I doing this correctly and will this hydraulic lifter screw with my readings?

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#17 Funky Phil

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Posted 19 June 2017 - 05:46 PM

You need a solid lifter to read it. .410 is stock lift (off the top of my head)

Edited by Funky Phil, 19 June 2017 - 05:48 PM.

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#18 kev

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Posted 27 June 2017 - 09:26 AM

I take an old hydraulic lifter, pop it a part, remove the spring and ball, and reassemble.   This will allow it to fully collapse.   Then I use feeler gauges to take up the gap.  

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#19 Hoosierquest

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Posted 27 February 2018 - 03:24 PM

Back at it again with this cam.
I installed an adjustable cam gear I had and then mounted my degree wheel etc.
After finding tdc I first looked for love center and came up with 107.25.
At .050 I had the following.
7.5 BTDC
42 ABDC.
So would that also give me about a 230 degree intake at .050?  
This cam degreeing is all new to me.
Tried doing the exhaust but it was whack.
Going to go get my mechanical rockers and do it over. I'll get back then.

Edited by Hoosierquest, 27 February 2018 - 06:21 PM.

<a href="http://s102.photobuc...t=100_2004.jpg" target="_blank"><img src="http://i102.photobuc...h_100_2004.jpg" border="0" class="linked-sig-image" /></a>

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#20 Hoosierquest

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Posted 01 March 2018 - 04:45 PM

Ok so I apparently was doing my math wrong yesterday. Today I used a calculator. I also dissasembled a set of lifters and removed the springs and balls.
Here is where I'm at  

Intake at .001
Open 27 BTDC
Close 79 ABDC
Duration 286

Exhaust at .001
Open 68 BTDC
Close 29 ATDC
Duration 277

LSA 112.8
Overlap 56

Intake at .050
Open 8 ATDC
Close 38 ABDC
Duration at .050 210

Exhaust at .050
Open 32 BBDC
Close 4 BTDC
Duration at. 050 208

Intake centerline 113

I did this several times and got pretty close to these numbers each time.
Btw this cam is a CWC so I'm assuming a blank from 1996.

Thoughts?

Just reset the dial and ran through it again on each.  
I get the exact same at .050 but it keeps changing at 001.
This time I got I got
297 duration intake
And 272 exhaust. Do I need to ditch the Chinese dial and get a good one?

Edited by Hoosierquest, 01 March 2018 - 09:11 PM.

<a href="http://s102.photobuc...t=100_2004.jpg" target="_blank"><img src="http://i102.photobuc...h_100_2004.jpg" border="0" class="linked-sig-image" /></a>

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