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I've been playing around with Desktop Dyno2000 and came up with a very interesting cam for my 351C. My only concern is that the duration would be too short for the amount of compression.
I have an Australian 351C with the Australian 302C closed chambered 2V heads. The intake valve is 2.055" and the exhaust is 1.660" and they will be pocket ported. I suspect (popular with these heads) to have 11:1 compression on the pistons. I won't know for sure until I take the engine part and measure the piston spec's.
I want to build the engine for mid range torque or about 2,000-5,500 RPM and DD2000 came up with the following...
The cam on the intake side only has 213* duration at .050" lift. It has 228* on the exhaust though. Is the 213* figure too short with this compression? Will the dynamic compression shoot up too high to run the car on the street? I expect to put in premium gas (93 octane) and occasionally 100 unleaded octane to be mixed in. It ran well on 91 octane, but did even better on a mixture of 93 and 100. Never had a knock or ping.
The car will have a 5-speed manual and weighs about 3,350 pounds. The rear gear will be about a 3.25 - 3.75:1 with 26-27 inch tires. The car will be driven on the street to cruises and car shows as well as for fun. It will not be a daily driver. I will also take it down the drag track a few times I am sure.
Thanks for any input.
Steve
I have an Australian 351C with the Australian 302C closed chambered 2V heads. The intake valve is 2.055" and the exhaust is 1.660" and they will be pocket ported. I suspect (popular with these heads) to have 11:1 compression on the pistons. I won't know for sure until I take the engine part and measure the piston spec's.
I want to build the engine for mid range torque or about 2,000-5,500 RPM and DD2000 came up with the following...
The cam on the intake side only has 213* duration at .050" lift. It has 228* on the exhaust though. Is the 213* figure too short with this compression? Will the dynamic compression shoot up too high to run the car on the street? I expect to put in premium gas (93 octane) and occasionally 100 unleaded octane to be mixed in. It ran well on 91 octane, but did even better on a mixture of 93 and 100. Never had a knock or ping.
The car will have a 5-speed manual and weighs about 3,350 pounds. The rear gear will be about a 3.25 - 3.75:1 with 26-27 inch tires. The car will be driven on the street to cruises and car shows as well as for fun. It will not be a daily driver. I will also take it down the drag track a few times I am sure.
Thanks for any input.
Steve