Topic Options
#2521182 - 07/12/18 06:26 PM Cam measurement
deaks Offline
master

Registered: 05/16/04
Posts: 3117
Loc: robin hood country
I checked the cam lift in my 470 today, i measured it with the dial gauge on the lobe and multiplied it by 1.5, i get .585 int, 615 exh. I've looked in the comp cams catalogue but can't find anything that matches, any ideas as to the make ? it's a solid roller.
Mick
_________________________
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36

Top
#2521210 - 07/12/18 07:13 PM Re: Cam measurement [Re: deaks]
AndyF Offline
Too Many Posts

Registered: 01/20/03
Posts: 24507
Loc: Oregon
Are you checking the cam in a block with a dial indicator? If you do that way then you can measure the lobe lift of the cam. If you have a degree wheel you can also measure the duration at 0.050 and 0.200 which will help figure out the lobe. If the cam is out of the block you can look for numbers stamped on the end. Usually there is a grind number on the cam.

Top
#2521234 - 07/12/18 08:36 PM Re: Cam measurement [Re: deaks]
sr4440 Offline
mopar

Registered: 02/06/08
Posts: 463
Loc: Central TEXAS!!!!
solid roller lobe #'s 1465, 4294, 4295, 4831, 12050, 2202 all have .390 cam lift. (.585 /1.5)
I didn't do your exhaust

did you look in the master lobe catalog?

http://www.compcams.com/Technical/Catalogs/CamLobeMasterCatalog.pdf


Joe
_________________________
Without Data, you’re just another guy with an opinion.

Top
#2521339 - 07/13/18 04:42 AM Re: Cam measurement [Re: deaks]
deaks Offline
master

Registered: 05/16/04
Posts: 3117
Loc: robin hood country
Andy, the engine is all together except for the heads, i had .040 shaved from the Indy -1 Heads to get a bit more comp, so i clayed the valves for clearance and measured straight off the lobe. I've been looking through the info i got with the motor and it says it's a Herbert roller D6H but i cant find the specs on their site.
Thanks Joe, i didn't realise i had the cam make and number untill i looked through my stuff.
Mick
_________________________
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36

Top
#2521389 - 07/13/18 08:53 AM Re: Cam measurement [Re: deaks]
sr4440 Offline
mopar

Registered: 02/06/08
Posts: 463
Loc: Central TEXAS!!!!
Originally Posted By deaks
Andy, the engine is all together except for the heads, i had .040 shaved from the Indy -1 Heads to get a bit more comp, so i clayed the valves for clearance and measured straight off the lobe. I've been looking through the info i got with the motor and it says it's a Herbert roller D6H but i cant find the specs on their site.
Thanks Joe, i didn't realise i had the cam make and number untill i looked through my stuff.
Mick


http://www.herbertcams.com/cam-grinds/


joe
_________________________
Without Data, you’re just another guy with an opinion.

Top
#2521408 - 07/13/18 09:53 AM Re: Cam measurement [Re: deaks]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11196
Loc: So. Burlington, Vt.
The one Herbert roller I ever measured wasnt even close to the advertised specs.
None of it was correct....... Not the Lift, duration, or lsa. All were off enough to where it was hard to believe the cam had the correct part number on it.
Of course, nothing else in their catalog matched my measurements any better.

I seem to recall Chip had a similar experience with his Herbert roller.

As Andy mentioned, put a degree wheel on it and measure it up.
It is what it is, regardless of what the specs say it's supposed to be.

I did find this with a little digging:
Quote:
CD6H 260/270, 605/605, 108LC, 3400-7400 ROLLER CAM
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

Top
#2521459 - 07/13/18 11:52 AM Re: Cam measurement [Re: deaks]
deaks Offline
master

Registered: 05/16/04
Posts: 3117
Loc: robin hood country
I've just spoken to herberts and they tell me a D6H measures .604/.604 260/270 at .50 on a 108, so that can't be my cam. I haven't got a degree wheel.
Mick
_________________________
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36

Top
#2521461 - 07/13/18 11:59 AM Re: Cam measurement [Re: deaks]
deaks Offline
master

Registered: 05/16/04
Posts: 3117
Loc: robin hood country
I've just been looking through some parts i have and would you believe i've got another herbert roller , it's a D6C, the card says.625/.625, 275int/283 exhaust at .050 on a 108 lobe centre.
Mick
_________________________
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36

Top
#2521473 - 07/13/18 12:38 PM Re: Cam measurement [Re: deaks]
AndyF Offline
Too Many Posts

Registered: 01/20/03
Posts: 24507
Loc: Oregon
Why don't you think that the cam you have is a D6H. Looks to me like it could be the one you have.

The real question is what are you trying to do? Do you need a different cam for some reason? Isn't the cam you have working for you? Just trying to figure out what the real question is.

Top
#2521486 - 07/13/18 01:17 PM Re: Cam measurement [Re: deaks]
deaks Offline
master

Registered: 05/16/04
Posts: 3117
Loc: robin hood country
Sorry i went off at a bit of a tangent, when talking about the other cam, the one in the motor was the one i was looking for info about. Andy, i don't think mine is the D6H because the guy at herberts said the D6H was .604/.604, whereas mine measures .585 int/.615 exh. .390/.410 lobe lift. I haven't run the car yet, the motor's been on an engine dyno but i've had .040 shaved off the heads since then, hence why the heads are still off the car.
_________________________
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36

Top
#2521495 - 07/13/18 01:30 PM Re: Cam measurement [Re: deaks]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11196
Loc: So. Burlington, Vt.
Sounds like its time to invest in a degree wheel.
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

Top
#2521505 - 07/13/18 02:18 PM Re: Cam measurement [Re: deaks]
AndyF Offline
Too Many Posts

Registered: 01/20/03
Posts: 24507
Loc: Oregon
Measure your cam again. I bet you'll find out that it is 604/604.

Top
#2521524 - 07/13/18 03:10 PM Re: Cam measurement [Re: deaks]
deaks Offline
master

Registered: 05/16/04
Posts: 3117
Loc: robin hood country
lobe lift was .390/.410, i measured it twice on both, those numbers x1.5 make 585/610, yes i need a degree wheel.
A slight distraction but here's the dyno sheet before i made my changes. Mods are swap .060 head gaskets for .040, another .040 shave off the heads and HP 1000 to 1050 dominator, i'm hoping for another 25 hp. Engine is 470 low deck, 230 block, bushed lifter bores, cross bolted mains, zero deck, Indy 440-1 heads.
Mick


Attachments
img051.jpg


_________________________
69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36

Top
#2521554 - 07/13/18 05:00 PM Re: Cam measurement [Re: fast68plymouth]
Cab_Burge Offline
I Win

Registered: 08/23/03
Posts: 31224
Loc: Bend,OR USA
Originally Posted By fast68plymouth
Sounds like its time to invest in a degree wheel.

iagree Knowledge is power scope
I use to race a street hemi in NHRA stock, I tested a bunch of different rocker arm sets on my motor at the retainers with the same cam and head using light pressure checking springs, them stupid stock 426 Hemi ductile iron rocker arms varied from .430 lift at the retainer to .520 on the same lobe with the same zero lash setting shock puke
Test, test and test some more thumbs wrench
You really need a decent degree wheel to degree the cam, that can make a hoop of differences on the track and at the engine dyno work scope
_________________________
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Top
#2521890 - 07/14/18 03:24 PM Re: Cam measurement [Re: deaks]
fast68plymouth Online   content
I Live Here

Registered: 01/20/03
Posts: 11196
Loc: So. Burlington, Vt.
When the lobe lift wasn’t what you were expecting, did you check another intake and exhaust lobe?
_________________________
68 Plymouth Satellite, 383, stock 906's, 3550lbs, 11.18 @ 123, 1.51 60'
WD- Comp Cams / Indy Cylinder Heads

Top

Advertisement
Forum Stats
25,485 Registered Members
32 Forums
192,924 Topics
2,251,965 Posts

Most users ever online: 1,424 @ 06/20/18 07:18 PM
Moparts Newest Topics
1970 exhaust tips
by gregok
09/19/18 08:29 AM
70 Cuda with C26 code
by horsepower.2007
09/19/18 08:08 AM
Hoosier DOT drag radial?
by gregsdart
09/19/18 07:07 AM
1970 Satellite Station Wagon
by moparmike1
09/19/18 05:49 AM