1BlkStealth

I basically have a stock engine with no cam or torque converter. I eventually plan on adding a converter and cam at a later time. But I keep hearing that going to something bigger than the stock throttle body and LS6 intake is not worth the gains. What would be the gains?

dutinsss

iTrader: (2)

basically the intake and TB are what let the motor "breath". with a stock motor your stock intake is more than enough. when you increase the volume of air the heads can flow, or go to a bigger cam, or increase the cubic inches of the motor, it needs more "breathing room". but the added volume of intake and TB are not needed with the stock motor so it will not net you the gains. adding too large of an intake and TB can actually decrease torque on the bottom end because when you increase the volume, you decrease the velocity of the air entering the motor, which can decrease torque.

1BlkStealth

Thanks for that information dutinss. Well getting a bigger T/B, MAF, and Intake requires getting a tune as well. I still want to try it and see what happens. It will be a few months but just want to know if anyone has done this set up.

thunderstruck507

iTrader: (18)

You will be severely disappointed. You're talking about spending ~$1500 for less than 10rwhp.

You could port your own throttle body and put on an underdrive pulley for about the same gains for under $200. Or a $150 mail order tune.

The mods you're talking about won't show their worth until after you have ported heads to go with your cam.

CaMaRo67RS355

iTrader: (75)

Dont upgrade the intake with those minimal mods it wont hurt you but the gains will not be much. Now if you have a built motor thats totally different. I am one who upgraded my intake and tb on a cam only setup but the only reason I did was because of the deal I got on it and I was changing a few other things at the time so I had to get it retuned anyways. The gains were good but would have been better if I had a few more goodies in it.

usafws6

iTrader: (10)

Cam and converterfirst

dutinsss

iTrader: (2)

it will cost you about the same to do a cam swap and it will get you much better results than the intake. your just upgrading part of the engine that doesn't need upgrading. if you already have an ls6 intake, i wouldn't even upgrade that until you upgraded the heads. it's basically like hooking a fire hose onto a garden hose. if the garden hose won't flow what the fire hose is pushing, you might as well have a regualar garden hose. if that makes any sense at all.

BlueBird346

iTrader: (13)

I have a FAST 92/92 on a my bolt on Formula. Im building a H/C/I forged 347, and had the intake sitting around waiting for the new engine. Ended up selling my LS6 intake so I had to install the FAST. I can tell you, its not worth the money for a stock internal engine.

I MIGHT have felt some improvement at 5k+, but im not completely convinced its not just in my head. Maybe 10 horses. Like I said, I already had the intake/TB sitting around waiting to go on the new motor, if I was staying with bolt ons, id keep the LS6.

1BlkStealth

Wow....yeah you guys are right. I'm just so stubburn in trying to get that Fast Intake, T/B, MAF unit and tune but can't afford to waste money. I just didn't want to go the Stall/Cam/Tune setup first but hopefully I will by the end of the year. I really appreciate you guys conviencing me dutinsss, thunderstruck507, CaMaRo67RS355, and BlueBird 346. Thanks guys.

BlueBird346

iTrader: (13)

No problem.

82cetuner

iTrader: (9)

fasts are just eye candy, most guys get them for the face value if it looking like they got a mean motor.

even on my 418 ls3 switching from a ported ls3 intake to a fast 102 wont let me but about 10hp, im better off spending the same amount of money on a NO2 kit

Ronny_02_WS6

iTrader: (6)

If you upgrade the breathe in (INTAKE) you're gonna have to upgrade the breathe out (HEADERS AND EXHAUST), and for that you're gonna need better flowing cylinder heads and a bigger cam to push all that air out. The tune and stall converter is a most so the engine stays in a rhytm, then youll see big gains

CaMaRo67RS355

iTrader: (75)

Not a problem I vote for porting the stock tb, get ya a good cam, converter, good tune and the supporting bolt ons and I think youll be surprised at just how different it makes the car. Also keep in mind if you still have the 10 bolt and you beat on it Id look into upgrading the rear before sinking that much money in the fast intake/tb setups or maybe a nitrous kit

BlackScreaminMachine

iTrader: (17)

A LS6 intake will certainly gain on a LS1 styled intake motor (assume 97 to 2000). For the most part, most people never need anything more then a stock styled intake be it a FAST, GM LS6, or even a aftermarket BBK. There are pros and cons depending on power out put and price but in the end make more then a LS1.

I have personally seen a 130k Corvette with leaky valve seals, with intake, headers, and exhaust and a MS3 cam gain 40 RWHP on the dyno just to the LS6 intake since it was mine that I sold to put a FAST 90/90 on my cammed car.

In the end you could bolt on a FAST in anticipation of future power, it not hurt, but in same cases effect under curve power. My cam which was a VRx4 228/230 @ 112 LSA on a stock headed 2002 honestly did not take advantage of the FAST which was Vengence Ported so I went back and willing to wager the power curves are similar @ peak and better under curve.

LeanPocket

iTrader: (6)

https://ls1tech.com/forums/new-ls1-o...s1-99-z28.html

heres a guy with a fast setup w/ sp lid, full exhaust with a catted Y, upgraded fuel injectors ANDDDDD a 228R cam and can barely hit 370hp 360 tq on motor.

bad tune? catted y? stock heads? who knows?

I'm not blaming the fast setup, however in this example it sure diddn't help much with a 92/92. So OP for the $1200 you can get a ls6 intake, gaskets, udp, belts, LT's, ORY and a tune for that amount assuming u can do the labor urself.

I'd do that first before considering that setup

BlueBird346

iTrader: (13)

I disagree. With a properly matched combo, the can pick up some very healthy gains.

Nissan LS240

iTrader: (1)

Definitely do your other bolt ons first, but the only reason I went with the fast 92/92 was that the direct port nitrous kit is a lot easier to install.

Gregory

iTrader: (4)

Although the numbers are murky, a 90mm throttle body flows about 1100cfm. A dominator carburetor is about 1050cfm. Supposedly a 102mm throttle body is about 1400cfm.

I made a lot of phone calls to get these numbers a while back. It turns out the exact cfm numbers are mysterious because most flow benches cannot flow this size of a hole at 28 inches of water. But, the info. should help in your decision making process.

Fry_

your sig doesn't even list headers I wouldn't even bother with a cam till you have lt headers. altough a stall converter would still be a good mod on even a completely stock car. 3.73 gears might be a good idea to if your car came stock with 2.73's.

DieselNuts

This should be the only response you need to deter you. This post is full if truth.