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Power Estimation

This is a discussion on Power Estimation within the Internal Engine forums, part of the LSx Technical Help Section category; Originally Posted by lingenfelter69 lpe ls6 cnc'd heads fast 90 intake fast 90 TB Long tube 1 3/4 flowmaster 3" ...

  1. #41
    Quote Originally Posted by lingenfelter69 View Post
    lpe ls6 cnc'd heads
    fast 90 intake
    fast 90 TB
    Long tube 1 3/4 flowmaster 3" with e cutout
    281 Hr street strip cam with the ratio changed from 1.6 to 1.7(same cam used with my 346ci ls1
    pully
    msd wires
    free mods

    -looking at the mustang dyno sheet it looks like the power starts to flatten out at 5125rpm. from 103mph to 109mph it just stays flat. The shop whom did my car for me said we could get a little more out of it changing the msd limiter. From what I gather not being a expert at all, It looks like it could be a few ponies more but she is pretty much close to as good as shes going to get. Also it has not had a dyno tune either so who knows. What dyno is more accurate, mustang or dyno jet? What is the conversion? I used 17 percent on the dynojet and 20 percent on the mustang.
    Something is very wrong. You should make power clear until at least 6200-6400rpm. Change from 1.6 to 1.7? What!? Stock ratio is 1.7 How/why did you have 1.6s on there? And what rocker do you have now? If aftermarket, go back to stock!

  2. #42
    Member lingenfelter69's Avatar
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    BLACK
    2003 ZO6

    I must be mistaken on the rockers then. When I had talked to my mechanic quite a while ago about my camshaft, he said that they raised the ratio. He told me that it is very high lift how it stands now. I was thinking that I would need a 287 HR stroker cam or ms3, to greatly benifit the stroker package, not sure now. He had told me that my weaklink are my ls6 cylinder heads and I should look at trickflow 215's.

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