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cam only vs heads and cam

Old Oct 30, 2004 | 05:11 PM
  #21  
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I need to get rid of the stock 4L60E and 10 bolt before i make anymore power. I want to launch on the gas and not break anything. But I am saving for LS6 heads and hopefully an iron block 408. Christmas is around the corner!!!!!
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Old Oct 30, 2004 | 08:22 PM
  #22  
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Originally Posted by 1SpeedDemonHawk
I need to get rid of the stock 4L60E and 10 bolt before i make anymore power. I want to launch on the gas and not break anything. But I am saving for LS6 heads and hopefully an iron block 408. Christmas is around the corner!!!!!
I hear ya! I'm afraid it's already a bit too late for my stock A4 tranny. I'm going to have to save my pennies over the winter for a race-prepped one.
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Old Oct 30, 2004 | 08:49 PM
  #23  
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Originally Posted by c54fun
You usually see 20-25 more rwhp with a nice set of ported heads over stock with the same large cam setups ! I have not seen much over 450 RWHP with H/C and 425 with Cam only!
weather you go with a h/c or just a cam wont affect ET if they are both making the same power and set up for max efficiency like was explained above. the h/c will give you more low end around town but that dont play a part in racing where the rpms are always over 5000 anyway. for example i know of lots of h/c cars that have slower et with the same or more power from inefficient setups.
i should make close to 450rwhp cam only after im finished and im expecting a mimimun of 30-35rwhp gain from good heads
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Old Oct 30, 2004 | 09:13 PM
  #24  
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Think of it like this.

You make power with the top end of the motor, camshaft included. You build the bottom end to hold the power.

A bigger cam makes more power. So why not just throw the biggest cam in the car that will fit? Here is where the heads come in. The heads need to be able to flow up to the cam specs.

Like someone else said, 400hp at 5000 rpms is 400hp at 5000 rpms.

If you have seen a cam only car make more power than a cam/heads car then you have to look at several things.

No two cars are the same.

Dynos vary.

What was the torque of each car?

What rpm did each car make peak torque at? This is important because hp is just a number that comes from a formula, it cant be measured. Torque is measured and then along with the rpm that the torque is made, and the common number of 5250 you get hp. If a cam only car makes more hp than a cam/heads car then one OR both of these things must be fact.

The cam only car MUST make more torque. If the cam only car doesnt make more torque then it MUST make its torque at a higher rpm.

So in other words if 2 cars make 400lb/ft of torque then the car that makes its peak torqe at the higher rpm WILL make more hp. Its just a mathematical fact.
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Old Oct 30, 2004 | 11:46 PM
  #25  
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hopin for 10.60 cam only?...im gonna be there and i hope to see it , that would make the weekend to see a cam only car that fast...ah cant wait, it should be fun
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