x2. Those prc ls6 heads from Texas Speed are a little over $1k. But That 102 is a sexy mofo. Gains should be big going from a 78mm stock intake.

Thought the TBSS intakes and the Gen IVs had the same design. Just cathedral ports instead of rectangle.

I just read what i typed and realized it didnt make much sense. Im curious to see how much the 90mm or the 102 fast lxrt gains over the stock 78mm intake on the 99-07 trucks... since they gain like 20 hp with the fast over the 90mm tbss/07+ intakes and the tbss intake is a pretty good increase over the 78mm like (15/18) or around those numbers... if that makes anymore sense... so in theory if it were a stock engine with the 78mm intake the fast lsxrt would gain like 35hp over the stocker....

So what does the engine have done to it now? cu. in., cam, etc...

It is going on my 06 crewcab Lq4 243 heads milled .035 unported,will be TEA stage III soon
228/232 .588 .595 112lsa 108 ICL
kooks 1 3/4 stepped to 1 7/8
Performabuilt level 2 with a pi triple disk 3800
Nitrous
regardless,it will gain with these heads,and have even better gains with the new heads when they are bolted on:D

charlie you got a great set of heads sitting on your motor right now, i would invest in having those heads reworked, i hear nothing but good things coming from those casting way better than any other head, take it for what its worth but i would at lease look into it. well almost better than the ls3 lmao

And updates on the progress can't wait to see what a good tune can do for that lsxrt.

Yes it came in monday.I got home late and got a late start,I had several emails
And pm's to do first.Manifold is on,fuel rails are on.Now I wait for the throttlebody
And x link to get here.

Yes it came in monday.I got home late and got a late start,I had several emails
And pm's to do first.Manifold is on,fuel rails are on.Now I wait for the throttlebody
And x link to get here.

what TB did you go with? Truck, one of the 2 car TBs, or one of those nick williams (i think that is the name)

My bad Charlie, we were texting back and forth yesterday when you could have been playing with your new toy, haha :nod:

That's going to be a mean setup, can't wait to hear how it runs!