candlelit

iTrader: (21)

I've been thinking about buying a turbo or supercharger for my car. The bottom end is stock. I do have ported LS6 heads, a comp grind cam, ls6 intake, LTs, and a few bolt ons that have me at 420rwhp.

Can I run about 5-8 psi and not have to worry about my engine? My goal is 500rwhp. I've think I could pick up probably another 30rwhp by going to a ported Fast 90/90, an underdrive pulley, and bigger injectors. Would I then be close to that 500 mark with those upgrades and FI? And about pushrods, anyone ever installed them? Any advice?

Which would be the cheapest, but efficient FI to get me where I want to be? I'm scared about STS and single turbo since I've heard incredible things about the prochargers are much better.

Superman09

iTrader: (65)

pushrods, pull old out, drop new ones in, thats all. You'll want to look into some valvesprings as well. Search and you will find many threads on which kit is suitable for each person, etc. 500 rwhp is possibly on stock shortblock and FI, been done many times very reliably, However the safe part is all in the tune!

98turbls1

iTrader: (17)

Well done right the STS (rearmount), front mount turbo, and prochargers can all do that job... You should be able to be okay but you may want to change out those heads to Lq9 heads...As far as the pushrods are concerned just take off your rockers and slide them in... Then retorque the rockers to 22 ft lbs... Done... Just an FYI, change out your springs too...That will help with valve float from the added pressure of FI...

99Z28LS1

iTrader: (4)

im on stockers and 500rwhp

EPP

iTrader: (22)

http://www.exoticperformanceplus.com....html?item=798
Here is our price for our D-1SC complete kit.

http://www.exoticperformanceplus.com....html?item=540
Here is a list I put together that may help you out. Bob

98turbls1

iTrader: (17)

Oh yeah, don't go with the FAST intake if you're running boost...They have a record of rupturing...

WS6 #3392

I had EPP do mine for me and you can see in my sig the power and tq that I made. These numbers are on a dynojet also.

ChevyChad

iTrader: (50)

I could have made 500 rwhp with 1 or 2 more degrees of timing on my stock bottom end and still be in the "safe" range. I opted to stay in my "comfort zone" instead and ended up with 489 SAE (STD was 497). That was on the bone stock bottom end. Only reason it gave out was that it sucked water in thru the bypass valve every time it rained Another excuse to not have a mecham hood

98_Formula

iTrader: (15)

defintily doable, with a turbo or s/c.

if you go supercharger you wont need the underdrive pulley, that wouldn't work out good. also fast intakes don't seem to do much with boosted applications, there great for n/a stuff tho.

you might wanan trade in those ported heads for a good set of ported lq9 like previously mentioned, or 317's, thye lower ur compression i think almost a whole point. just make sure ur fueling is up to it and get a rock solid tune.

the amount of PSI can't really be determined off hand, it can depend on the size and type of the supercharger or turbo, and just how it work with ur setup. i think generally around 8lbs seems to get most turbo or D1SC owners in that range, the P1SC might need a tab more, but thats usually stock heads on there.

99Z28LS1

iTrader: (4)

i made 503rwhp with an exhaust leak, basic STS with FMIC, matching fuel and a custom cam. she's still got another 35-50rwhp in her too

candlelit

iTrader: (21)

thanks for all the input guys. money is going to be an issue, especially since doing FI always costs more than you expect. is spending $7000 to have FI done really worth it when I could buy a 4x4 SUV for that? I mean, if I just do a ported 90/90 intake, an underdrive pulley, a SSRA cai kit, and a 9" rear with 3.73 gears will the power between that and FI be worth saving a few thousand?

99Z28LS1

iTrader: (4)

FI is amazing in my opinion and i have reciepts of some transactions that i WAS going to go through with BEFORE i went turbo. 2200 AFR 205's and SLP cam kit...... im happier with my STS kit

EPP

iTrader: (22)

Check out this LS2 2005 GTO we recently finished up.
http://www.exoticperformanceplus.com...Car.php?car=46
7 psi of boost, stock engine with Kooks headers, Corsa exhaust.

LS1_NM

Wow, I can't believe you guys are getting 500 rwhp on stock bottom ends. That makes me feel a lot better because I've heard in the past that LS1 and LT1 engines can't handle boost without forging them. At what PSI should someone go with a forged bottom end? 10+?

Urban Legend

iTrader: (5)

Over 2 years at 10 psi with a very soft tune. Still ended at over 500 rwhp with stock heads and no meth.

The Wreckoning

iTrader: (3)

im making 505hp 520tq on a stock bottem end thanks to billy at trt at 7.5psi

00Z-28Maro

iTrader: (1)

I hit ~525 rwhp SAE on the dyno at 5 psi and was driving around on 7lbs for 3 or 4 months without any major problems (shredded a belt once). I couldn't get on it all the way because i needed a clutch but it has hit high 5's on a 10psi boost spike from what i was told (i couldn't be there).

99SS-T

iTrader: (5)

500 rwhp is far from pushing it. 600 is doable with a descent tune an over that is on teh fence. I was makin 620ish on pump at 10psi for a while an i loved to get on it.
Its really up to u if u wanna go FI or not. U certainly dont need to go FI to get close to 500 rwhp. And if u wont have a rear end already then ull need 1 with NA or FI at 500rwhp. It sounds like u have a good chunk of change into it already goin the NA route. Seeing as ud need to get different heads injectors fuel pump and alot of other small crap u might be beter off with NA as ull actually not waste all ur money on a car. Once u go FI its impossible not to want more. And with a turbo its a turn of a **** away if u have tuning software so it makes for a tough scene if u dont have alot of money to throw at it. I knwo i love mine and im happy with teh **** ton of money im throwin into it but it aint for everyone. GL man

John

98_Formula

iTrader: (15)

geezus ur at 661rwhp with a stock bottom end??? i've been seeing more and more people posting up with 600+ rwhp with stock bottom ends still in tact. makes me feel safe to try 500 rwhp... of course thats gonna be stock bottom on, rebuilt (but nto built up) tranny (thats 2 years old from rebuild) and a stock rearend. i'm not expecting the tranny to last. i hope to just get thru the 2 1/2 montsh of summer buffalo see's b4 upgrading that.

LS1_NM

Damn, do you mean stock heads as in "untouched that came from the factory"? Or do you mean stock heads that have been worked over? That is impressive either way. Have you run a new Z06 with your setup? I bet you could be very close to one if not beat it.