LS6 throttle body
A larger tb wont really help, it will be a lot harder to rig up and the gains arent that much even when the car puts out 500-600hp. So on our cars you would see any gains, maybe a loss in low end power. Also the ls6 intake flows ALOT better than any other ls intake(save for the ls3 and 7)
I'm about to do headers and LS6 intake when I get the transmission built. Going to wait on the cam for a while, when I get bored with what I got. I guess I'll get an adapter fabbed up.
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Teching In
Joined: Sep 2009
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A larger tb wont really help, it will be a lot harder to rig up and the gains arent that much even when the car puts out 500-600hp.
here's something to think about, the LS6 intake makes more power than the LS2 and it uses a 78mm TB vs. 90mm.
At the 400hp level there won't be large gains, but when you get into the 500+ hp level the gains are significant. LS1 guys use the fast 90/92 and pick up good hp at that level. Cost is usually the biggest concern when debating intakes.
With an LS4 you'll probably never need more than an LS6 intake with 78mm TB.
At the 400hp level there won't be large gains, but when you get into the 500+ hp level the gains are significant. LS1 guys use the fast 90/92 and pick up good hp at that level. Cost is usually the biggest concern when debating intakes.
With an LS4 you'll probably never need more than an LS6 intake with 78mm TB.
Teching In
Joined: Sep 2009
Posts: 40
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here's something to think about, the LS6 intake makes more power than the LS2 and it uses a 78mm TB vs. 90mm.
Thats not to say I'd throw a FAST 90 setup on an otherwise stock LS4- just that I do think there are power gains to be had well below the 600+ hp level mentioned.
I think if you had a car making crazy power, a 90/92mm tb would be great but our cars will very see that level of power unless its turboed. Maybe a few ponies would come from switching from the ls6 to the fast 90mm but it would be under 5hp unless we make power.
