merim123

iTrader: (11)

no nitrous, N/A preferred. Is it possible on a stock ls1 bottom end with the right heads/cam but also decent street manners?

buddy runs 125mph in his viper and want to see if i can keep it close NA without making an all out race car.

car is stock SS currently with slp lid, ls6 intake, borla, SLP longtubes, t56, ls7 clutch, borla and 3.73 12 bolt strange, stock 241 heads and cam.

LS1rob00

iTrader: (9)

Yup, definitely possible. Good friend has a H/C/I SS with ~430whp that traps 125mph.

It's all about the setup. You will definitely need H/C/I + Full bolt-ons. Decent sized cam, good flowing heads, probably a FAST mani.

You also need to be conscious of the weight. Save weight where you can (lighter suspension pieces, dumped X-pipe, etc. Get rid of unnecessary things like emissions, A/C. Pull weight that you can.

Hooking up will also be important. You'll need a good wheel/tire combo, preferably bigs and littles.

I'd also recommend a 4:10 gear. You'll need a better clutch than an LS7 as well if you want to be consistent.

Now if you don't want to go through all that trouble just do a basic H/C setup with some spray lol.

Fbodyjunkie06

iTrader: (10)

Yes it can be done.

You will need as the above poster said a well thought out H/C/I package and be conscious about the race weight of the vehicle being used.

A strong clutch, rear end, and a 4.10 gear would be preferred with a 4.30 or 4.56 being optimal for a strictly N/A combination.

dodson55

iTrader: (18)

look at the mods in my sig i came close to 125mph na with stock lq4 short block and stock 243 heads

Bill00Formula

iTrader: (4)

It can be done but it's difficult. When I had my LS1, I was making 440 rwhp with ported LS6 heads (MTI) and an LG cam. Best mph was a 123.5 but mostly ran 121-122 mph. That was with 4.10s and a race weight of about 3,650 lbs. It seems like you would definately need to cut weight to acheive that goal. Also, it will depend on how you define decent street manners. Seems like the best option is to increase displacement, like a 402 or 408.

HeavyMetl

iTrader: (2)

I've kinda had that as a goal in mind for a while too, I'm hoping next year after I get the H/C/I done it'll happen. I picked up some 243's a couple weeks ago and am planning on using AI for the porting and cam selection. Definately a FAST 102 as well.

My 3rd gen is pretty well stripped, just need a fab up some aluminum bumper supports and get a fiberglass hood. Weight is already 3180 empty, so after drag wheels, skinnies, and the aforementioned mods I hope to be below 3100. With me, raceweight in the 3350 range.

merim123

iTrader: (11)

Thanks for the feedback guys, it sounds like it's a no go on the 346. I'd hate to invest in heads/cam and not meet my goal of beating my buddy. I can see that it can be done, but I'd have to give up too much and I don't want to give up street car ease of driving, been down that road already and it sucks. It has to keep A/C and be driveable without going deaf

FRiCK

iTrader: (7)

Mods and time in sig. ~3250 race weight, 3,300' DA. Im thinking I can go 126-7 with some GOOD weather...

djfury05

iTrader: (30)

I went 125 on my old LS1 setup first time out on bald DR's with stock 10 bolt and 3.42s.. had AI heads/AI cam and Fast 92

garygnu

I believe Damian lives in Chi-town ,contact him.he builds great engines that make great power .there are a few ls people in your town that can help you out.

Fbodyjunkie06

iTrader: (10)

You will not have to sacrifice drivability if you want to go 125.

It will just take the right cam and heads and well thought weight reduction.

If you want this give me a call I can do it for you.

clonedws6

iTrader: (6)

Just spray