Thread: Final couple questions for build.

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I just went through exactly the decision making process you are going through. I decided to slow down a bit and spend a couple more dollars to do it a little better than my original plan.

As for the 5500 vs 6500 redline thing, I was faced with the same dilemma. The first heads I bought were E Streets that would have somewhat worked with my roller cam, but would top out at 5500. One of our Techs at work said "as long as you are spending that kind of money why limit yourself to only 5500......what if you miss a shift?" So I sent them back and got Performer RPM's that will go to 6500.

On the other side of the scale, I know AFR heads or TrickFlows would have given a little more hp, but for the street driving I am going to do 99.9% of the time I didn't need that top end power, would rather have it at the low to mid range. That is the decision you need to make, how you intend on driving the car. As long as you are going the 347 route good breathing will only make the engine run better. The 351 heads were the hot setup at one time, but technology has made better choices available.

You ask about AFR heads, and when I was researching my intended purchase AFR came up all the time as being about as good as they come. Everyone seemed to have respect for them.

Don