shane_ss

iTrader: (9)

Im looking at doing the 408 lq9 from TSP, not sure on what cam or heads im doing with the package just yet. Was wondering what number some of you are making to the wheels and the set up you have. I will be doing a N/A high compression or at least that's what I have my mind set to at the moment. Looking to get 500-600rwhp out of this in a 1999 Camaro SS M6.

Just seeing what some of the set ups are and the numbers you guys are making. Here are a few pictures so its not so boring to look at

Jason 98 TA

iTrader: (4)

Power levels really depend a lot on the overall combination. We've seen slap together combos make 475rwhp & we've seen combos go near 550rwhp. Really depends on the combo & the components surrounding the engine. I personally really like the PRC 237cc heads if you want to stay cathedral. They are proven performers, infact they moved the most air of any cathedral heads tested in the Hot Rod magazine head shootout!

shane_ss

iTrader: (9)

Thanks for the info and input Jason. I was looking at the PRC 237cc heads and stage 3 LS6 heads. I know I will have a Fast 102mm intake and TB combo on top of the motor for it to breath well

mark21742

Never had it on a dyno, but I have beat several sport bikes in my 04 GTO with my 408
12.5:1 compression,255/263 .624/.624 115lsa cam, ported/ milled 241s (yes my original stock heads), Edelbrock proflo xt intake manifold, 60lb injectors and fully forged bottom end. Full cut is set at 8,000 for now, but might raise it after getting on a dyno to see where the power drops off.
Idled decent at 850-900 rpms

Hope to get it on a dyno this spring with the new rear/chassis/ 3 speed manual

1BDHWK

iTrader: (18)

^This. The more power you want N/A, the more expensive its gets. And it gets expensive in a hurry!

shane_ss

iTrader: (9)

thanks for the info any videos of your car at idle and what other mods do you have like exhaust gears intake

im finding that out lately lol ive got right over 9200 to spend

dr_whigham

iTrader: (49)

Good God! That cam is HUGE! What's drive ability like?

COPO9560

600 rwhp is a lofty goal for a pump gas 408, 550 would be more achievable.

I vote for the ported LS3 style heads - you really don't need FAST for LS3 heads and can save a lot of $$ by picking up a used intake/injectors/rails off E-Bay for around $300 or so.

Mazzenger

iTrader: (5)

You might check out the sticky in the dyno section "408 Results Part II".
There are many combos for viewing in there.

Sprayed1998

iTrader: (10)

Check my sig

youngrigo

Your gonna need your budget and then more for the supporting mods.... My buddy is making 530rwhp and 505tq out of his 408 but his build wasnt cheap

shane_ss

iTrader: (9)

like I said id be happy with anything above 500 but if I get 600 that would be great but I have always been told have a set goal of power then have one you really want to try and get to it but if you dont oh well. I just sold my ls6 intake. and ive been keeping a look out on here for used ones but they have a pretty good sell going on right now for alot of FAST stuff

Thanks ill check it out

sounds like a sick set up any videos of it on the track or street?

I have a build trans and full umi suspention at the moment only thing I dont have that I really need is a rearend but ill be easy on the new motor for awhile and put some miles on it that should give me time to save for a nice 9 inch or 12 bolt

bww3588

iTrader: (49)

9 inch. With the torque arm setup and the amount of torque the 408 puts down, you will start deflecting the case on a 12 bolt and in no time the gears will start to make noise.

mark21742

I had 3" dual exhaust with an X pipe, then after the X pipe it was basically two strait peices of pipe going the rest of the way out under and just on each side of the the stock irs center section with the small 3" Dynomax bullet at the back.....with the new setup I'm not sure how I'm exactly going to run it.

I atribute a lot of the characteristicts the the engine to the intake (It's basically a cast version of a sheetmetal intake) with the 4,000 stall I was running it was VERY streetable and pulled all the way up to my 8,000 fuel cut.

As of right now it still all torn apart in the garage and this past weekend was the first time in over 4 months that it has been sitting back on the floor by itself without jackstands or blocks holding it up.

Now it has a full tube chassis, 10 NHRA legal cage, Ford 9" solid axle and 4 link, custom front double wishbone and coilover front suspension, moved the engine back 11"s, 3 speed manual swap, 4.56 gears and tucking 31-18.5 15s on custom 18" wide 15s under my custom full widebody.

Last year the car weighed in at 3665 with me in it and this year I'm shooting for a 2,500-2,700 pound race weight and still be able to daily drive it.

I can't wait to drive it again!

shane_ss

iTrader: (9)

moser custom fab 9 inch

I am shooting for 2990 on weight ive removed ac heat cruise control abs and a few other small things and added umi suspension to see how much that will lower me

butler

I loved my lq9 408 except the weight. You save 100 lbs with the ls2 block. I should have done it.

smok'nZ

iTrader: (160)

if i were to do it over again id go 12.1 compression and tfs 235's fast 102/102 my set up it went 11.5 leaving in second gear with my th400 (17's wouldnt hook in 1st)

should do 10.9 or better when i do a little suspension work and gears

shane_ss

iTrader: (9)

im not to worried about weight since its more of a street car track around here is being tore down im pretty sure but weight does help

yeah im running through a m6 so I should be 10s for sure with full umi stuff

butler

I had mine in a 91 mustang. 58/42 weight distribution.

mark21742

I'm in the middle of finishing my full cage and tube chassis in my goat and moved the engine back 10"s, so after I get it together we will see...I'm shooting for 50/50 or slightly more towards the back, and 2,500-2,700 lbs....when I first got the car it weighed in at 4,100 lbs