Generation IV Internal Engine - 06 ls2 w/ lingenfelter cnc 243s + mods = ? hp/tq

putting this together for the formula

i have an

06 ls2 shortblock out of a vette
lingenfelter stage 2 heads (243s)
230/230 .587 112lsa custom grind comp cam
ls6 intake
pacesetter longtubes and 3" y pipe hooker aerochamber w dual cutouts
3500 stall
3.73 gears

car without the ls2 and cnc heads was good for 363 rwhp and an 11.80 timeslip

56 views and not a single guess??

400-435 RWHP? What kind of compression will you end up with? That looks to be a fun build.:drive:

My old LS1 with Patriot 243's and cam, FAST 90/90 and LG street longtubes got 450 RWHP. I was at about 11.2:1. Since breaking it I am going to build a 404 shortblock and put all my top end goodies on. kicking around a new cam though.

Chris

putting this together for the formula

i have an

06 ls2 shortblock out of a vette
lingenfelter stage 2 heads (243s)
230/230 .587 112lsa custom grind comp cam
ls6 intake
pacesetter longtubes and 3" y pipe hooker aerochamber w dual cutouts
3500 stall
3.73 gears

car without the ls2 and cnc heads was good for 363 rwhp and an 11.80 timeslip

I have the same LPE ported 243 heads and last week made 473 rwhp / 425 rwtq on the dyno.

My build is as follows.

- LPE CNC 243 heads full roll, which I guess is stage 2.
- LPE GT-11 Cam. Specs: 216/231 duration, .631"/.644" lift on 118 LSA
- Dynatech headers
- Corsa Cat Back.
- Cats are there.
- FAST 92. Ported by me. This picked up 31 rwhp over stock LS2 manifold. Get the FAST intake.
- Stock TB. Ported by me.
- Yella Terra roller rockers
- Comp Cam Hi-Tech push rods
- LS3 card style MAF installed in older Halltech Killer Bee bridge.
- K & N air filter

If the heads are off the motor, have them pressure tested. Mine developed a crack on #5 intake port and was leaking coolant into the cylinder. A local shop welded them up good as new. Stock head castings can get thin during the CNC process.

I tuned the car myself and it starts and idles dead smooth at 675 rpm. Most people never suspect it makes this kind of power. Driveability is stock. I love this combination.

Last week, I switch to the LS3 card MAF and Halltech bridge and picked up 17 rwhp over the stock MAF and K&N assembly. Very shocked.

Torque curve is virtually flat from 4700-5800 rpm at 420 rwtq. Makes the peak HP at ~6000 rpm.

425 with the little cam.