Building an LQ4 6.0 some ?'s

**kealap** · 04-08-2007, 08:00 PM

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?

**PFM** · 04-09-2007, 12:03 PM

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.

**Frankthetank** · 04-09-2007, 06:34 PM

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?

**mrr23** · 04-09-2007, 07:02 PM

the larger the cubes, the more it absorbs the cam.

**Frankthetank** · 04-09-2007, 07:03 PM

u think it work work ok though?

**mrr23** · 04-09-2007, 07:07 PM

remind me of the specs.

**Frankthetank** · 04-09-2007, 07:09 PM

232/234 .595/.598 113lsa

**mrr23** · 04-09-2007, 07:11 PM

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

**Frankthetank** · 04-09-2007, 07:13 PM

will it still sound aggressive as shit u think?

**kealap** · 04-09-2007, 07:19 PM

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.

**Frankthetank** · 04-09-2007, 07:20 PM

all motor?
Is that rear wheels?

**mrr23** · 04-09-2007, 07:26 PM

Originally Posted by Frankthetank

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.

**mrr23** · 04-09-2007, 07:30 PM

Originally Posted by kealap

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.

**kealap** · 04-11-2007, 04:52 AM

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?

**mrr23** · 04-11-2007, 04:18 PM

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.