ejbta2

at what rwhp would you need a bigger tb? I have a stock polished tb on my motor, but would i benefit from a larger tb? I am running 28 lb injectors and they are maxed out but are working fine, no need for larger injectors. my mods are in sig.

HCI2000SS

iTrader: (2)

What TMS shortblock do you have? No need for bigger TB unless you have a bigger intake

99Bluz28

iTrader: (35)

IMO if your injectors are maxed out then you do need larger injectors before doing anything else.

ejbta2

Its a stock ls1 rebuild short block. and i do have a professional products intake. car is a 2000 ta. Also, the reason i was wondering about the larger tb because i knew if i went with one like a 85 i knew i was going to buy larger injectors too. That is why i am asking so i would know if it was worth the expence of tb and inj. . my current a/f ratio is 12.8 at wot right now.

thunderstruck507

iTrader: (18)

You could try an 85mm but you would probably be better off selling what you have and grabbing a used Fast 78, 90, or 92 intake and getting the tb for that.

Might be 10rwhp to gain on a setup like yours unless the PP intake is better than I'm aware.

ejbta2

Thats kind of what i was thinking $200 for a tb and $300 for injectors for a possible 10 whp is not worth it to me. Thanks for all the feed back guys.

thunderstruck507

iTrader: (18)

I was talking about a gain from switching intakes. I doubt you would see any gain from the throttle body alone which would show up on the dyno.

Injectors are not a HP issues, they are a longevity issue. Overworking their duty cycle can cause them to fail.

COSPEED

iTrader: (331)

You are probably loosing HP from the PP intake. Those intakes are horrific. There was some hype on them when they first came out but ...

I would do a FAST 92/92 setup.

http://www.coloradospeed.com/fast-ls...2-p-22989.html

http://www.coloradospeed.com/1998200...d=251&sort=20a

http://www.coloradospeed.com/1998200...d=208&sort=20a

Good luck.

jimmyblue

iTrader: (11)

People keep talking them (PP) down but I have yet to see
one straight up comparo other than the vendor's own
put-up vs a LS6. You got anything besides speculation,
hearsay and "probably"? Because so far it hasn't come
around here.

COSPEED

iTrader: (331)

We were there in the beginning. The TBs castings are weak and break easily. The PP intakes were straight out copied off the Holley's without any regard for fitment on the oil pressure sending unit, that is why they later had to come out with some adapters so it would work on the F-Bodys and not just the Corvette.
We found that from TESTING way back, the LS6 stock intake is equal to the PP aftermarket intake on the dyno.
We do sell the PP intake and TBs because there are some who want them.

99Bluz28

iTrader: (35)

If it's when the injectors are maxed out at WOT with the air/fuel ratio optimized.