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| Stock cam question https://slantsix.org/forum/viewtopic.php?t=58983 |
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| Author: | paul_sak [ Sun Jan 17, 2016 9:30 am ] |
| Post subject: | Stock cam question |
I've heard that the Direct Connection doc has "wrong" information. But I've never heard specifics. Is it outdated or flat out wrong? That being said, the Mopar performance manual states that "The best production camshaft available for the Slant Six was used in the 1971-77 engines. This mechanical camshaft had a 244 degree duration, 26 degree overlap and a lift of .406" intake and .414" exhaust" My question is: If I am rebuilding a tired daily driver, and I'm relatively happy with stock performance BUT I'd take "free" horsepower if it's there for the taking, should I stick with my stock cam? |
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| Author: | DusterIdiot [ Sun Jan 17, 2016 9:40 am ] |
| Post subject: | It's... |
That cam is the best production Cam...if you are adding some compression then then the 244 Purple cam/ Erson RV10 would be the next best choice, there is another thread where Dan was working on getting one patterned by OCG so you can buy one on regrind or on a new blank. Even the late mechanical cam wakes up a bit in a stock engine if some simple head work/porting is done and you upgrade to a super six. |
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| Author: | Reed [ Sun Jan 17, 2016 9:40 am ] |
| Post subject: | |
What year engine do you have? Yes, the stock 71-80 cam was OK for the street, and it doesn pretty good on the street with increased compression and increased valves and porting. Board members hav even done very well with the milder 60s era cam by just doing the above mentioned head work. If you are building a motor for a daily driver, then the stock cam is likely plenty provided you improve the ability of the head to flow air and possibly upgrade to a two barrel carb and increase the size of the exhaust system. |
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| Author: | paul_sak [ Sun Jan 17, 2016 9:54 am ] |
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DusterIdiot - yes the group buy thing is what got me thinking about this. I was wondering if it's "worth it". Not so much worth it financially but worth it in the sense of how non-stock parts can sometimes lead to other complications. In the case of a reground cam, I think the pushrods might need to be longer (or if I have enough adjustment, may be as simple as re-adjusting the valves.) Question: If I put in a re-ground cam AND shave the head do I approximately end up where I started? Reed - This is a '72 stock 225. I plan to stick with a one barrel because I feel the performance upgrade won't be worth it financially AND I have a NOS Holley I bought from SSD ten years ago. |
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| Author: | Reed [ Sun Jan 17, 2016 10:48 am ] |
| Post subject: | |
OK- I say keep the cam, keep the single barrel, improve the compression and head flow, and increase the exhaust diameter. That should make a noticeable difference. |
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