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Building an LQ4 6.0 some ?'s

This is a discussion on Building an LQ4 6.0 some ?'s within the Internal Engine forums, part of the LSx Technical Help Section category; Got a killer deal on a complete lq4 6.0 MOTOR(9:1 COMP RATIO). Need rec. on best heads and cam setup. ...

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    Building an LQ4 6.0 some ?'s

    Got a killer deal on a complete lq4 6.0 MOTOR(9:1 COMP RATIO). Need rec. on best heads and cam setup. I want to use TSP torquer v2 cam, and thinking of the stage 2.5 LS6 heads with 2.02 1.57 from TSP as well to raise the comp. ratio back up. Wanting 450 rwhp. Already have all the bolt ons and exhaust. What do you guys think?

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    I don't know if you could ever get that combo up to n/a specs. That more of a blower motor SCR. You could get them to cut the PRC LS6 heads to 59cc and run a cometic .040 gasket but your still not gonna raise it that much. Call TSP and ask Jon or Jason.

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    JOSEY FUCKING WALES! Frankthetank's Avatar
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    I have a torquer v2 and have thought about throwing all my parts on a junkyard iron block and bore and stroke it....
    U think a torquer v2 would work well with that bigger displacement?

    TSP Rumbler, LT's, TSP Tqr2, PRC 921 Springs, Comp Lifters, Chromoly 7.4" Pushrods, Titanium Retainers/Seats/Seals, ARP head bolts, BMR full Rear suspension

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    Senior Member mrr23's Avatar
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    dark bowling green
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    the larger the cubes, the more it absorbs the cam.

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    u think it work work ok though?

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    dark bowling green
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    remind me of the specs.

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    JOSEY FUCKING WALES! Frankthetank's Avatar
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    232/234 .595/.598 113lsa

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    dark bowling green
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    could go larger, but it'll do nicely. more concerned over your heads. i'm guessing stock.

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    JOSEY FUCKING WALES! Frankthetank's Avatar
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    will it still sound aggressive as shit u think?

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    My car is a daily driver so I didn't want to go too radical with the cam. I talked briefly with Jon today and am getting the stage 2.5 LS6 heads with the 2.02 1.57 setup. Possibly thinking a little bigger on the cam, but not sure. Again I want to hit 440-450 rwhp that is streetable.

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    JOSEY FUCKING WALES! Frankthetank's Avatar
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    all motor?
    Is that rear wheels?

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    Senior Member mrr23's Avatar
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    Quote Originally Posted by Frankthetank View Post
    will it still sound aggressive as shit u think?
    not as much. again, the larger the motor, the more it absorbs the cam. be more docile. not as notice able. how much less, i couldn't tell you.

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    Senior Member mrr23's Avatar
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    Quote Originally Posted by kealap View Post
    My car is a daily driver so I didn't want to go too radical with the cam. I talked briefly with Jon today and am getting the stage 2.5 LS6 heads with the 2.02 1.57 setup. Possibly thinking a little bigger on the cam, but not sure. Again I want to hit 440-450 rwhp that is streetable.
    your issue will be the way low compression. to hit those numbers, NA, you'll need appoximately 11:1. with the low compression and large cam with narrow LSA, you won't be making the cylinder pressure needed to make that cam useful.

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    Okay I am actually getting an LQ9(10.1:1) only $200 more for one. So with that in mind, with the heads and cam setup I am thinking of(PRC stage 2.5 & Torquer V2) will this get me close to my 450rwhp goal?

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    Senior Member mrr23's Avatar
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    closer. you'll get over 400, but not sure if it'll hit 450. most that do, end up with a much larger cam. one thing you'll need to make a decision on. do you want a number, or actual usable power throughout the entire rpm range.

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    Ya talked to Jon @ TSP today and went with the larger torquer 3 cam.

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