Hey everyone, I am brand new to the ls1 game but not brand new to motor builds. I am coming from a 500hp ford focus that i drove daily.

Like it says in the title what would it take for 650rwhp on a 99 corvette ls1. Currently mods on the motor is, Lunati vodoo cam, long tube headers and ls6 intake in a 93 rx7 fd with a camaro t56 that has been rebuilt with bronze gears in it. The car dyno'd at 363.8rwhp and 362.6rwtq. Also what are the limits of the stock bottom end?

My goal for this car is a nice fast daily driver with all the luxuries such as ac, cruise, nice ride, and nice stereo. Any and all help would be much appreciated.

I think for now Im kind of curious what are the limits to the power without tearing into the bottom end of this motor, but if need be later down the road maybe a full motor build up. I want drive ability and Im not a fan of NOS I have a heavy foot and dont want to hassle with constatly filling anything up. So im talking turbo. I hav a couple of extra turbos around the garage that could be used. just curious could i meet my goals with the motor as is and just put a turbo on it and a good tune? or is it going to be much more involved?

I assume the regular stuff. fuel pump, injectors, things like this.
Thanks again in advance.

 

500hp focus?? What was done to it just curious

 

It is a fully built wrc rally cgi block, manley rods, diamond pistons, billet/ balanced/ forged crank, and custom t3/t4 48 trim turbo at 25lbs of boost. I still have it and am selling it. I just wanted something different, tis why I bought this rx7. To be honest if I could get this rx7 like my focus I think I would be pretty happy. That little bastard is a monster. haha

 

Do post pics of that focus. !

 

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I have since cleaned up the headlights so they are clear again.

Its a really great car, everything you could ever want in a car. My friends all make fun of me for wanting something else. Its got all i said above. ac, cuise, 3k watt stereo, heated leather recaro seats, rides nice, its reliable, and so far from a roll its been untouchable in a race. And that includes racing sport bikes. Ive had the thing for 10 years and built it myself. I call it eating my damn cake that i wanted.. haha.

 

600Rwhp is about as far as most like to push the stock bottom... And that is starting to push the limits. When asked what the stock bottom end limits are the answer is usually 600Rwhp, just seems to be the magic number in most motors that let go.

A meth kit will obviously make it much safer. With a meth kit and a spot on tune, I wouldn't worry at 600rwhp as long as everything was on par to begin with... You could push it to 650Rwhp but just know that it is probably going to let go sooner or later.

 

Awesome. I think i could be very happy with 600 whp for now. Ok so now the question its. what kind of work do i need to reach that goal? What heads, intake, injectors, fuel pump? and can my lunati cam get me there? i currently have a .68 precision turbo sitting in my garage. will that turbo get me there? i have a really great tuner with in a couple of hours and if anyone could get me there he could.

 

what a/r housing on the .68

 

That cam isn't worth a squirrel fart bro. Get with PatG or someone to spec out a nice turbo/boost cam. Turbo cams usually a little different than blower cams.

 

I'm not too big into turbos... Mostly motor and nitrous and know my bit about blowers, never got into snails... Take my information on this with a grain of salt!

317 heads would be fine (stock truck heads).. They will help get compression down and they flow decent for a stock casting head. All budget FI guys run them.
That cam would "work" but there are definitely more blower friendly cams to choose from. Tons of guys running stock ls6 cams with great success with turbo builds.
Injectors.. 60# will get you what you want.
Racetronix kit with hot wire.. As mentioned I would also run meth for added safety.
Front mount IC
Ls6 intake unless you can swing a FAST setup.. about 800$ difference.
Probably will want to get away from the LTs to help with spool time.

That should get you headed in the right direction... I'm sure there are plenty of turbo gurus that can chime in and help more or fix my suggestions.

Personally, with a T56 I would rather see a blower on it than a turbo.

 

I wouldn't worry too much about the intake manifold, Ls6 will do the job. Its going to be getting plenty of air shoved down its throat haha.

 

I know the turbo guys are more prone to upgrading though than the blower guys.. Blower likes a nice exhaust.

 

Are you arguing with me dude?!?! Screw you man...always gotta have the last word!!!

 

Don't bring a knife to a gun fight SON!!!!!!!!!!!

Watch out, key board warrior in the house!
"word"

 

Love it

 

sell the ls1 and install a turbo 4.8 600rhwp can be had with a china gt45 lol

 

if you are sticking with the ls1 you need a good meth kit or you need to run E85. most people run 70+mm turbos and ~10psi should get you to around 600. see my sig for my numbers with a cam only ls1

Your cam may not be suited for boost but neither is mine (111lsa). if you feel like changing do it but id atleast put a 224 in it if you go through the hassle. those things are going dirt cheap now too and they always do well with boost.

another thing, regardless of whether or not you are changing the heads, if you are going for 600+ you NEED headstuds. Im still on stock headbolts and started to push coolant. i could run less boost/timing and it would be fine but i wanna push this motor for everything its got.

 

Dang at 600 rwhp? I was making more than that with an old gt67 setup on an f-body with no problems. Interesting though, does this seem to be more of a problem with boost rather than N/A or Nitrous?

 

As a couple have mentioned before, it might not be a good idea thinking about running boost and that power level on the stock bottom end. Had you said you just wanted a number and it blows when it blows, I would say you'd be fine. But it sounds like you want some reliability as well.

These non forged high CR engines were not meant to run boost from the factory. True, you can probably get away with 6-8 #'s for a while. But leaving the stock bottom end 100% stock on even a moderate amount of boost will = a rebuild in your near future. Personally, I think 550 at the wheels would be what I would call "the limit" to push it to on the stock bottom end.

If I misread your post, and reliability does not matter, then I apologize for wasting my post.

If you want to run boost safely, there are some things like the head studs that Ryans99ls1 mentioned you should consider doing.

For arguments sake, boosted setups like cams cut around a 114 LSA.

 

well im sure some people can run it no problem but i know before i bought my car, it had nitrous. Im also pretty sure the heads have been off the car before so who knows if they were torqued properly when put back on or the headgasket they used.

Above all though, its probably a product of too much timing for the stock stuff. im putting 317s, ls9 gaskets and studs in and when im done, im gonna bring the timing down a lil more to about 17deg (its at 18-19 now).

I8URFORD lifted his stock castings/bolts at around 600 and 20ish* timing and blew the motor. he was on 93 though, im absolutely positive E85 is the only reason my car has survived at this level