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Herbert Hydraulic Roller Cam |
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1982AMCConcord 
AMC Addicted 
Joined: Jul/13/2012 Location: Kenosha, WI Status: Offline Points: 1287 |
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 Posted: Sep/12/2021 at 2:59pm |
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I just found out about the Herbert Cams recently and wanted to post about them too... I like the smallest one. Has a nice broad rpm range. Starts at 1000-6000. Seems like a good match for the RPM Air Gap intake manifold and a Holley Sniper. 😁
Dur Int-Exh: 280/285 Dur @ .050 Int-Exh: 220/225 Lift 1.5 - 1.5 Int/Exh: 485/500 Lift 1.6 -1.6 Int/Exh: Lift 1.7 -1.7 Int/Exh: Lobe Center: 112 Valve Lash: HYD RPM Range: 1000-6000 Description: Low to mid-range torque and power. Good for daily driver. Good sounding idle Do they use their own roller lifters or do they use Morel, Gaterman, GS?
Edited by 1982AMCConcord - Sep/12/2021 at 6:43pm |
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amcenthusiast
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Joined: Jul/02/2012 Location: SW Atlanta GA Status: Offline Points: 1778 |
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Posted: Sep/12/2021 at 11:54pm |
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Make a fool out of me had no concept of your race car status.
That's a 6000 rpm car? Naw BS Sign IMO it should have all internal balanced reciprocating assembly. In this case ditch idea of hydrualic lifters. -hydraulic design is for lower maint Make it spin easy with lighter internal balanced recip assbly parts, not heavier lifters... Torsional twist & bad vibes on the crank will shorten the life of the engine. |
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443 XRV8 Gremlin YouTube video: https://www.youtube.com/watch?reload=9&v=2DmFOKRuzUc
XRV8 Race Parts website: http://amcramblermarlin.1colony.com/ |
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Elwin1989
AMC Fan 
Joined: Oct/19/2021 Location: CA Status: Offline Points: 3 |
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Posted: Oct/19/2021 at 9:34am |
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JAVsst
What did you end up doing with the rocker ratio. I see HS has 1:6:1 but can find any 1:5:1. Just going with the ca6pj cam Herbert has. What lifters did you use? Thanks
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javsst
AMC Nut
Joined: Jul/02/2007 Location: Lebanon, NJ Status: Offline Points: 435 |
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Posted: Oct/19/2021 at 10:13am |
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I used the 1.6 HS rockers, so I had to size the cam accordingly since Herbert uses the 1.5 ratio, which I believe is a Chevy ratio. I called their tech support just to confirm the web site was correct and they did say the cam specs are based on 1.5. I was able to get Crane roller lifters before they went out of business. They are are back in business, but I don't think they're making AMC Hyd. Rollers. I had no issues with the lifter bore using Crane. Not cheap. I built that engine well over 10 years ago and even then I think they were $600.00 Part number was 86532-16. Amazon last listed them at $811 and Summit indicates Not Available. Steve
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1970 Javelin SST Bittersweet Orange 360/T10 4 Speed AMC20 w/3.54s
1969 AMX BBO 360 with TF727 AMC20 w/4.10s |
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Elwin1989
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Joined: Oct/19/2021 Location: CA Status: Offline Points: 3 |
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Posted: Oct/19/2021 at 10:31am |
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Who did you have grind it?
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javsst
AMC Nut
Joined: Jul/02/2007 Location: Lebanon, NJ Status: Offline Points: 435 |
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Posted: Oct/19/2021 at 11:54am |
Not sure if they had one of the shelf, but Herbert Cams. They offer different lobe center profiles, and my machinist recommended I go for 112 degrees rather than the listed 110 degrees. He felt that it would offer a little more vacuum to make it more streetable. Steve
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1970 Javelin SST Bittersweet Orange 360/T10 4 Speed AMC20 w/3.54s
1969 AMX BBO 360 with TF727 AMC20 w/4.10s |
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Elwin1989
AMC Fan
Joined: Oct/19/2021 Location: CA Status: Offline Points: 3 |
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Posted: Oct/20/2021 at 1:12pm |
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So I ordered one they had one for 1.6 slight difference.
But they recommend the 6076 Morel lifters but those are at .903 Recall someone saying they need more clearance but if not Johnson will be the next safe option
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amxron
AMC Nut
Joined: Nov/18/2011 Status: Offline Points: 295 |
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Posted: Oct/21/2021 at 11:35pm |
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Isn't that a bbc in the silver X?
Ron.
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AMXron
Fleet/Jeep Mgr. Orbit AMC/Jeep 50-1787 |
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group20
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Joined: May/30/2022 Location: AZ Status: Offline Points: 46 |
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Posted: Jul/01/2022 at 8:58pm |
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That cam looks tasty for a street turbo 401 at 114 degree lobe angle
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Elwin1989 wrote: