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Re: Please Help Me Pick a Cam for my 511"
[Re: Jeremiah]
#1578255
02/13/14 03:34 PM
02/13/14 03:34 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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My  ... 1. 4-speed and 275/60R15 is a DISASTER combination w/ that much power. It won't matter what you pick for a cam 'cuz it'll never hook. 2. With a stick car, better find a way to put a bigger bias-ply DOT-legal tire under it, like at least a 10"-tread Hoosier QT Pro or MT ET Street. Even a sticky radial won't hook w/ a stick. 3. I also suggest strongly that you put your faith and $$$ into Dwayne Porter's hands w/ respect to cam selection. Be HONEST with him about your expections and what trade-offs you're willing to live with and he'll get you something that works. 4. If it was mine, I'd look for something around 275 @ .050" intake, 280 @ .050" exhaust, 110 LSA, and no more than about .700" net lift for durability concerns. That's still going to be something you need to stay on top of re: spring tension and lifter wear, though. Of course, with my cam pick & your combination, I'd expect my Challenger to be capable of dipping into the 9s on pump gas. But mine's an auto w/ reasonably sorted out suspension and I'm used to regular maintenace (when it's actually running). If you want a "set it and forget it" type cam, better re-think going much over .600" lift and stick with milder lobes that won't require killer spring pressures to keep the valve train glued together.
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Re: Please Help Me Pick a Cam for my 511"
[Re: Sport440]
#1578256
02/13/14 03:35 PM
02/13/14 03:35 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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 Just didn`t wanna pee in anyones cheerios.............  I`d bet my cam would work awesome in that thing............  This; .680-.660 lift 275-280 @ .050 108 lsa installed at 105......... Lash stays nice, idles and drive very nice and haulzz azz.............
Last edited by Thumperdart; 02/13/14 03:50 PM.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Please Help Me Pick a Cam for my 511"
[Re: Jeremiah]
#1578258
02/13/14 04:55 PM
02/13/14 04:55 PM
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Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines
master
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master
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
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That cam recommendation is horrible for what you are doing. That looks like a BBC camshaft. You should strongly reconsider that option.
RIP Monte Smith
Your work is a reflection of yourself, autograph it with quality.
WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
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Re: Please Help Me Pick a Cam for my 511"
[Re: CompWedgeEngines]
#1578259
02/13/14 05:19 PM
02/13/14 05:19 PM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
OP
master
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OP
master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Quote:
That cam recommendation is horrible for what you are doing. That looks like a BBC camshaft. You should strongly reconsider that option.
That is why I am asking questions here and verifying my options as I go.
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Re: Please Help Me Pick a Cam for my 511"
[Re: BradH]
#1578260
02/13/14 05:39 PM
02/13/14 05:39 PM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
OP
master
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OP
master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Quote:
My ...
1. 4-speed and 275/60R15 is a DISASTER combination w/ that much power. It won't matter what you pick for a cam 'cuz it'll never hook.
2. With a stick car, better find a way to put a bigger bias-ply DOT-legal tire under it, like at least a 10"-tread Hoosier QT Pro or MT ET Street. Even a sticky radial won't hook w/ a stick.
3. I also suggest strongly that you put your faith and $$$ into Dwayne Porter's hands w/ respect to cam selection. Be HONEST with him about your expections and what trade-offs you're willing to live with and he'll get you something that works.
4. If it was mine, I'd look for something around 275 @ .050" intake, 280 @ .050" exhaust, 110 LSA, and no more than about .700" net lift for durability concerns. That's still going to be something you need to stay on top of re: spring tension and lifter wear, though.
Of course, with my cam pick & your combination, I'd expect my Challenger to be capable of dipping into the 9s on pump gas. But mine's an auto w/ reasonably sorted out suspension and I'm used to regular maintenace (when it's actually running).
If you want a "set it and forget it" type cam, better re-think going much over .600" lift and stick with milder lobes that won't require killer spring pressures to keep the valve train glued together.
1) Don't say never. There are lots of tricks to getting a clutch car to work. I might have to change tires but that is minor and can be addressed.
2) See #1. My goal is to have fun making this work and I will make it work.
3) I will contact Mr. Porter. When you say honest with expectations I have to ask why would I want to deceive the guy designing the "brains" of my engine. It will run as fast as it runs and that will be plenty fast for me.
4) I am not worried about maintenance when it comes to changing oil, checking lash and stuff like that. Everything I own is old and requires maintenance. What I want to avoid is changing out parts like valve springs and I have been told that I can run in the neighborhood of .750ish lift with good spring and be fine. To be honest Brad I expected something more towards what you specified with more net lift. That said I'm not an engine builder just a hobbyist looking to have a fast street car.
What I am trying to do has been done and may not be plug and play but I am willing to work for it and have plenty of budget to try different things.
So do you think we should get out the Gold leaf and paint DISASTER on the door of my car? Thinking outside of the box is not a disaster it is a journey and an adventure.
So back to cam recommendations if we may...
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Re: Please Help Me Pick a Cam for my 511"
[Re: Jeremiah]
#1578261
02/13/14 06:40 PM
02/13/14 06:40 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
So do you think we should get out the Gold leaf and paint DISASTER on the door of my car? Thinking outside of the box is not a disaster it is a journey and an adventure.
 Naaaahhh... just trying to pass on from my own experience and what I've seen with others' that big cubes + big power + manual transmission + small tires = a really tough time hooking up.
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Re: Please Help Me Pick a Cam for my 511"
[Re: BradH]
#1578263
02/13/14 06:47 PM
02/13/14 06:47 PM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
OP
master
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OP
master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Quote:
Quote:
So do you think we should get out the Gold leaf and paint DISASTER on the door of my car? Thinking outside of the box is not a disaster it is a journey and an adventure.
Naaaahhh... just trying to pass on from my own experience and what I've seen with others' that big cubes + big power + manual transmission + small tires = a really tough time hooking up.
I know my fellow mopar brothers are here to help. I did not take anything that was said as disingenuous. All of the knowledge that has been shared with me is always taken into consideration and much appreciated. It is not easy to help a guy like me is taking the hard, less traveled route to achieve mediocre results. With any luck the tunnel ram will scare people away at grudge night and nobody will ever know how slow the car really is.
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Re: Please Help Me Pick a Cam for my 511"
[Re: dvw]
#1578266
02/13/14 10:32 PM
02/13/14 10:32 PM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
OP
master
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OP
master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Quote:
A couple of questions. I'm assuming this thing is going on the street? Why dominators? Why only 10.8-1? Why a mechanical fuel pump? What kind of trans and clutch? I agree, get some bias plys. Also if it's not gutted I'll bet it's closer to 3850+.
Doug
Hi Doug,
I'll try to answer these questions in order:
1) I do not have dominators. My current combo has a 4150 1050cfm QF annular carb on it. I scored a second one cheap so that is what I'll try first. My engine with one carb works great so I figured two would be even better.
2) I started with 10.8:1 to stay pump gas friendly. If needed I can bump the compression up. The block has yet to be decked and the heads are virgin as well.
3) I have a mechanical race pump fuel pump and will make sure it feeds the engine's needs on the dyno. It should not be an issue. It is what I have so that is what we are trying to use.
4) On the trans: My next project is putting a 4-speed Lenco in the car. Practical? No. Fun? Very! Getting a forgiving clutch is not a big deal either.
5) The car is as light as I say it is. In fact it's lighter right now but will gain weight with some of the improvements and a roll cage good to 8.50. That will come after the trans swap.
6) On the tires that is not really in the scope of this discussion but as I said above that is an easy thing to change. Car sits on cal tracs and mono leafs with QA1's.
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Re: Please Help Me Pick a Cam for my 511"
[Re: Sport440]
#1578268
02/14/14 12:34 AM
02/14/14 12:34 AM
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Joined: Mar 2003
Posts: 9,100
Rogue River, OR
Jeremiah
OP
master
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OP
master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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I have two mechanical fuel pumps to test. This one: http://www.racepumps.com/and this one: http://www.claysmithcams.com/mopar-b-426-chrysler-hemi/I emailed the fellow that recommended the cam and am trying to understand his logic and make sure it's not huge because I am misrepresenting my intended use, etc. Being a little out of my league on this I hate to question the experts due to my lack of knowledge. From what I read I figured something high 260-low 270 @ .050 and .740-.760 net lift at 110-112 would do the trick. I was really surprised by the duration. I did say that my combo has 800hp potential with the tunnel ram perhaps that is where I went wrong. I stopped in and measured the potential installed height on my heads today. With a .060 spring cup it looks like my heads will also be using a 1.950 installed height, 1.625 diameter spring.
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Re: Please Help Me Pick a Cam for my 511"
[Re: Jeremiah]
#1578269
02/14/14 01:55 PM
02/14/14 01:55 PM
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Joined: Jan 2003
Posts: 9,881
Weddington, N.C.
Streetwize
master
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master
Joined: Jan 2003
Posts: 9,881
Weddington, N.C.
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PM 70Blackfish and ask for the cam he discussed with Bobby (me) and Dwayne (Fast68Plymouth)....pretty sure that one will get it done for you (other than maybe retarding the ICL a couple degrees for the stick) for both street and strip and with 1.7 rockers it'll be even better for the TR....why reinvent the wheel? I seem to think it was about 274I and 280E (? it's been about 6 years and I deleted the PM's back and forth...heck it might have even been a Flat tappet which means it'll be even better with a roller nose) with a moderate/street friendly lobe lift that didn't need a monster spring to live so it'll have great longevity for a roller. I'm purdy good on the overall durations lifts and spreads and Dwayne's the true master at that as well as picking just the right lobe.  Those heads have really good mid lifts so it doesn't need as much cam to ET well since the torque through the middle can do most of the heavy lifting. (hard acceleration). With heavy cars...Remember the cam that 'real world' ET's the best and the cam that makes the most power on the dyno are seldom the same grind, torque curve is more critical than the top end power number, that's why dyno charts mean more to me than peak numbers. With good heads, big induction but in a Heavy car...there's a bit more of an ET/drivability risk in over-camming it than under-camming it.
Last edited by Streetwize; 02/14/14 02:29 PM.
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Re: Please Help Me Pick a Cam for my 511"
[Re: Jeremiah]
#1578271
02/14/14 06:28 PM
02/14/14 06:28 PM
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Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
BBR
master
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master
Joined: Jan 2003
Posts: 7,131
Amarillo, Texas
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Guys, I just want you to stop and appreciate what a valuable resource moparts is. GREAT feed back about cam selection is going on here. I wish the BBF forums were as forth coming but they seem to be too worried about losing a camshaft sale to post any meaningful information. Carry on. 
Drag Week 2011 - 77th place - DD
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