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Thread: How fast on stock injectors

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    Default How fast on stock injectors

    It's my understanding that the injectors are a limiting factor on how fast I can spin my stock LSJ.

    But do we know how fast we can spin one w/o the injector upgrade?
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    Must Look With Hands. RooTBeeR is an unknown quantity at this point RooTBeeR's Avatar
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    depends on your afr

    around 12.0afr at 7000-7200rpm ive found idc to hover around 90%

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    So I'm probably stuck huh?
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    he haz 93, nm u drew movd so he haz 93 also....

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    would octane matter for flow? (other than say e85 obv.)

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    Could go slightly leaner w/o detonation with more octane as you don't need the same amount of fuel cooling.
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    good point

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    stock blower goes home for lunch at 6500 what do you want to rev higher for? No reason bubbba
    blue is fastah

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    That said you still want a proper AFR and if I ever get this thing to a race it will spend time in the upper RPM ranges unlike a drag car.
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    Quote Originally Posted by qwikredline View Post
    stock blower goes home for lunch at 6500 what do you want to rev higher for? No reason bubbba
    There's that too, I'd like to shift later to bring the gears closer together is the only reason, it's not like I'm allowed any more WHP than I probably have already
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    yeah, that's up there
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    Quote Originally Posted by TTMR View Post
    There's that too, I'd like to shift later to bring the gears closer together is the only reason, it's not like I'm allowed any more WHP than I probably have already
    hahaha
    dont care if you shift at 12 zillion rpm the gears will never get closer together. 6800 shift. thats all. dont worry about the injectors u b fine
    blue is fastah

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    not closer, but you would stay closer to peak power i spose

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    Quote Originally Posted by RooTBeeR View Post
    not closer, but you would stay closer to peak power i spose
    tis what I ment, but JP knows best
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    needs more ported head

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    Quote Originally Posted by RooTBeeR View Post
    needs more ported head
    need more points!!
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  18. #18

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    Quote Originally Posted by TTMR View Post
    need more points!!
    +1?


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    Quote Originally Posted by hawlyns711 View Post
    +1?

    Lol, NASA rules
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    Quote Originally Posted by TTMR View Post
    tis what I ment, but JP knows best
    here is a gear chart for your axle ratio
    draw a vertical line from one gear trace to the next at the 6500 level. then see where it puts you. then look at your peak torque and see where you are. I am saying categorically, you dont need to rev more; other than 1st gear, you fall right into the heart of the torque curve at 4500 rpm or better


    its like flying a plane; no guess work please

    lol
    blue is fastah

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