![]() ![]() I put this cam in my engine rebuild/re-power and I can say that I am very happy with the performance of our boat. Here are some numbers distilled from the above that you can plug into you cam calculator to get close to the above actual opening and closing points. Intake Close 60-abdc 53-abdc 24-abdc 20-bbdcĮxhaust Open 63-bbdc 60-bbdc 35-bbdc 8-abdcĮxhaust Close 28-atdc 23-atdc 10-btdc 54-btdc Intake Open 20-btdc 17-btdc 7.5-atdc 50-atdc I did not take duration at lash point as that is pretty meaningless but GM says it is 288/308 - lift measured right on spec with. Note that lobes appear to be asymetrical on opening and closing sides. Here is some more cam info to help if you are planing to degree the cam- I cant vouch for the accuracy of the specs as they were pulled from a chevelle website: The 350 Marine cam would be a good one if used with good flowing heads like the Vortecs they were designed for.Įven though they look pretty mild they actually make good power. These are really a very good cam choice and GM used them in the 350 Ramjet and HT383 crate motors. If it is from a Marine 5.7L Vortec the most common cam has the following specs: Here is some info I found on a camshaft with similar specs you are looking for: ![]()
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