Spend the money for a converter first and build your motor later. A stock motor with a loose converter will run a whole lot better than a cammed up motor with a stock converter.
Build from the back to the front for happiness.
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| Cam Choice https://slantsix.org/forum/viewtopic.php?t=59539 |
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| Author: | 63dartconv [ Tue Apr 26, 2016 5:51 pm ] |
| Post subject: | Cam Choice |
So after talking with a couple people on here about the cam I originally went with, they advised against it. What is a good street cam with noticeable idle? I am running a 4 barrel Offy with 500 EB, Headers, .100 off of the head, stock TC and gears. |
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| Author: | Joshie225 [ Tue Apr 26, 2016 6:44 pm ] |
| Post subject: | |
The stock torque converter and your desire for a "noticeable" idle are at odds with one another. If you get that noticeable idle you're likely to hate driving the car for the lack of low speed performance. I wouldn't change the cam without changing the converter unless it was a very short duration cam and then you don't get your desired idle. |
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| Author: | 63dartconv [ Tue Apr 26, 2016 6:46 pm ] |
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Ok thank you! |
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| Author: | 63dartconv [ Tue Apr 26, 2016 6:54 pm ] |
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What is a better than stock cam with good street manners then without changing TC? |
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| Author: | DadTruck [ Wed Apr 27, 2016 5:19 am ] |
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see this thread http://www.slantsix.org/forum/viewtopic ... light=rv10 and this thread has info on street hydraulic cams http://www.slantsix.org/forum/viewtopic ... rpm+torque |
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| Author: | Joshie225 [ Wed Apr 27, 2016 7:40 am ] |
| Post subject: | |
I second the RV10 recommendation. I also like the Oregon Cam Grinding #819 as an intake lobe and the #818 for the exhaust on 108° lobe separation. This would give a short seat timing of 248/240° with 219/212° at .050" and .437/.431" gross lift. This is a couple steps up from stock and would take advantage of the raised compression ratio without killing the bottom end torque and making the car a slug at stop lights. I know you had .100" taken off the head, but it is a very good idea to measure deck height and combustion chamber size in order to determine the true static compression ratio. |
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| Author: | Rick Covalt [ Wed Apr 27, 2016 2:13 pm ] |
| Post subject: | |
The 819 lobe is what I have in my truck on both intake and exhaust. I like it very much. Will see what it runs in the 1/4 in about 3 weeks. Rick |
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| Author: | Joshie225 [ Wed Apr 27, 2016 2:27 pm ] |
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When I last road raced my 225 powered Dart it had the Oregon 819 cam with a home ported big valve (1.78/1.45") head and .100" milled off both the head and block. The compression ratio was probably near 10.5:1 and I ran it on 100 octane low lead av-gas. It would pull to 5800 RPM. I didn't have the oiling system up to snuff and ventilated the block when a rod bearing got hot and the rod failed. |
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| Author: | Dart270 [ Thu Apr 28, 2016 3:06 am ] |
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With the stock converter and gears, and your engine setup, I like either the 819 on both I+E or the 819/818 as Josh says. Those cams will be about as big as you can go and still use the stock converter. I don't see the RV10 specs in those threads, but as I recall it is very close to stock, in my book. Degree the cam at 100-102 centerline. Lou |
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| Author: | slantzilla [ Thu Apr 28, 2016 12:20 pm ] |
| Post subject: | |
Spend the money for a converter first and build your motor later. A stock motor with a loose converter will run a whole lot better than a cammed up motor with a stock converter. Build from the back to the front for happiness.
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| Author: | Dart270 [ Thu Apr 28, 2016 12:34 pm ] |
| Post subject: | |
That's the best advice I've heard all day... Lou |
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| Author: | Joshie225 [ Thu Apr 28, 2016 12:46 pm ] |
| Post subject: | |
Quote: Spend the money for a converter first and build your motor later. A stock motor with a loose converter will run a whole lot better than a cammed up motor with a stock converter.
Love it!
Build from the back to the front for happiness. |
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| Author: | Rick Covalt [ Thu Apr 28, 2016 1:07 pm ] |
| Post subject: | |
That is why I always put a new tailpipe on all my vehicles 1st!!  And I am running a stock convertor on my truck with the 819 cam. Rick |
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| Author: | slantzilla [ Thu Apr 28, 2016 3:28 pm ] |
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Quote: That is why I always put a new tailpipe on all my vehicles 1st!!
Yeah, but you are special. And I am running a stock convertor on my truck with the 819 cam. Rick
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| Author: | Killer6 [ Fri Apr 29, 2016 9:01 am ] |
| Post subject: | |
Quote: Spend the money for a converter first and build your motor later. A stock motor with a loose converter will run a whole lot better than a cammed up motor with a stock converter.
Ding! Build from the back to the front for happiness. 
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