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Phitown Hustler 
AMC Apprentice 
Joined: Mar/14/2019 Location: Philly Status: Offline Points: 124 |
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 Posted: May/14/2019 at 7:47pm |
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The Schneider 279 cam is the cam I run in one car as I was looking for a mechanical with not too much lift and needed 230-240ish duration to run on the street with a dual carb setup. Very happy with it so far. On this 401, I am also using the Crane 99838 double springs as I prefer shorter assembly heights that give moderate seat loads and quicker open pressure than comparable taller springs. With all mechanical cams on AMCs I only use Howards direct lube .904 lifters and smith bros restricted pushrods.
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WesternRed
AMC Addicted 
Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5798 |
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Posted: May/14/2019 at 8:48pm |
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Hopefully not hijacking the thread completely but that Schneider cam is probably on par with my current hydraulic, bit shorter gross duration, which might help off the line, but otherwise not much to gain. Next size up might be a step too far.
Need something that will let me turn a little more than the current 6500 across the line and also help drop the 60' time down a touch from 1.7 seconds, maybe a big ask? This is where I'm at now with the hydraulic, which feels like it is running out of puff at 6500: Intake: Adv Dur 298, 0.050" Dur 232, Valve Lift 0.510" Exhaust: Adv Dur 302, 0.050" Dur 238, Valve lift 0.510" LSA 110 11.74 @ 114.3 mph.
Edited by WesternRed - May/14/2019 at 8:53pm |
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I've finally given up drinking for good...........now I only drink for evil.
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PROSTOCKTOM
Supporter of TheAMCForum 
Joined: Jun/20/2010 Location: Indiana Status: Offline Points: 2450 |
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Posted: May/14/2019 at 10:57pm |
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For what it's worth my first pure strip car I ran a 250 @ .050" duration Crane solid lifter cam in a 302 and it ran really well to my 7,200 RPM redline. I am still looking for my time slips from that car, but I think it was hitting in 1.50 - 1.60 60 ft. times.
Tom
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PHAT69AMX
AMC Addicted
Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Posted: May/15/2019 at 2:37am |
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That was the same logic applied when I chose the Crane 99893 Springs for my cylinder heads. Not that I "know" from experience, but picked up that perspective somewhere...
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Ken_Parkman
AMC Addicted
Joined: Jun/04/2009 Location: Ontario Status: Offline Points: 1814 |
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Posted: May/15/2019 at 5:01pm |
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I like the specs on the Bullet cam, the comp suggestion may be considered a little smaller than what you have. The Bullet spring loads are pretty high, I would tend to think go on the lower side of their recommendation. The down side of high spring loads is increased probability of wiping a lobe - for sure make sure you are religious on break in and proper oil.
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PHAT69AMX
AMC Addicted
Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Posted: May/17/2019 at 12:49pm |
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Summit does show 2 more AMC Crane Solid Lifter Cams available, each a little step more than
# 861201 = 300/310 Adv, 3,000-6,500, # 861241 = 310/320 Adv, 3,800-7,200, # 861321 = 320/320 Adv, 4,200-7,500, The 1987-88 Crane Catalog on-hand says they all use those Crane # 99893-16 Valve Springs.
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Ramzilla
AMC Nut
Joined: Jan/28/2019 Location: arizona Status: Offline Points: 354 |
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Posted: Jun/06/2019 at 2:54pm |
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Sorry you made a mistake on the valve springs 99838 for solid mech roller cam. The new catalog is easier to identify. I know because this is the cam I plan on using when the time comes as for now anyway. 99893 springs are for Hyd roller cam a difference in spring pressures. Actually the solid roller has less spring pressure do to the less weight of the solid lifters. You can correct also when I am wrong.
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Ramzilla
AMC Nut
Joined: Jan/28/2019 Location: arizona Status: Offline Points: 354 |
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Posted: Jun/06/2019 at 3:02pm |
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That's for the 868511 cam springs 99838 .The 868821 cam has different springs 99876. Love that new catalog. If you see something different let me know. I know should of just cut and paste info.
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WesternRed wrote: