is an aeromotive 340 enough for on3 turbo

[spittin cobra]

i have on3 kit with 76mm ball bearing turbo on my 97 cobra. i have a aeromotive stealth 340 in tank pump with 80# injectors. i have been talking to a few tuners and one told me i need to put a t-rex inline pump. what kind of power can i make without the t-rex? if it will cost me alot of power i will get one? it's a stock bottom end so i'm only looking for 8-9# of boost.

[chevyguy15]

you will break your block before running out of fuel with that pump.

[cobra7421]

How is he gonna break a teskid block?

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[Goats]

I'm sure he means ,he will bust a rod or piston since there stock before he runs out of fuel.

[cobra7421]

he said block, so i said whhhhaaaaattttt?????? lol

[Goats]

He's a Chevy guy who doesn't know any better lol

[lightblade]

What base pressure? These 340's dont really flow all that well real world when they get hot. With 80lb injectors and 40psi base pressure probably support around 550rwhp.

[chevyguy15]

i read to fast and didnt see it was a 97 i was assuming it was a stock 5.0 block.

[JKolbfleisch]

Well, when someone says the "block" will break I interpret that as "shortblock" or "longblock" which includes rotating assembly. That will let go before the pump falls short.

[cobra7421]

Originally Posted by JKolbfleisch

Well, when someone says the "block" will break I interpret that as "shortblock" or "longblock" which includes rotating assembly. That will let go before the pump falls short.

ya cuz those forged piston and forged crank ain't worth a #### are they? lol i have seen those stock short blocks run on 14psi all day long. its called tuning

[Baznasty Dave]

Pump should do 500-550whp depending on how efficient the motor/turbo combo is

[FBM50]

Originally Posted by cobra7421

ya cuz those forged piston and forged crank ain't worth a #### are they? lol i have seen those stock short blocks run on 14psi all day long. its called tuning

B head cobra engines only came with a forged crank. The pistons and rods are not.

[spittin cobra]

will there be any benifits of having the t-rex or i'm good with just the 340? i would hate to leave hp on the table over a $250 in line pump.

[Baznasty Dave]

Originally Posted by spittin cobra

will there be any benifits of having the t-rex or i'm good with just the 340? i would hate to leave hp on the table over a $250 in line pump.

I heard the T-Rex pump does not do anything, read on some forum a tuner added it in-line to the system with a boosted 4.6 and it helped 0%

[lightblade]

No need for another pump.

[wytwolf]

I'd say you'll be fine with that pump, but the injectors are a bit overkill. 60#ers would support what you're looking at no problem.

[spittin cobra]

i'm just getting it tuned with 340 pump. i also have a snow stage3 kit so that should help with making some more power. as far as the 80# injectors when i bought my kit from chris at pas he said go with 80#. i'm having frank soldridge tune my car and he is great at what he does. i hoping for 550rwhp.

[luckythirteen13]

Originally Posted by cobra7421

How is he gonna break a teskid block?

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Where does it say teskid? I read stock bottom end

[wytwolf]

Stock 97 is Teksid.

[On 3 Performance]

That 340 should out flow the svt pump and I made 526/550 on a single svt pump(I think I did have a bap on it though). I have not pushed a single 340 pump myself but I cannot see how it wouldnt at least be good to 550+. There is a chevy 2500 at the track making mid 600's on a 76 and a single 340 pump

Also 8-9psi really is the threshold for the stock bottom end. I scattered my 99 and destroyed my block at 9.5psi

[89BlackGtVert]

Originally Posted by spittin cobra

i'm just getting it tuned with 340 pump. i also have a snow stage3 kit so that should help with making some more power. as far as the 80# injectors when i bought my kit from chris at pas he said go with 80#. i'm having frank soldridge tune my car and he is great at what he does. i hoping for 550rwhp.

Your Pump will be fine.. The injectors are little big. But nothing I would worry about.. I just had my car done by frank soldridge at PSI.. I bought everything from Chris at PAS.. He set me up with the 340 pump and 60 injectors.. I put down 512 through a AOD .. So you will be fine.. Frank does amazing work.. I run a nice 11.2-11.8 WOT A/F with low timing. I am running the ON3 70mm kit.


And yes I know my block is but I only wanted one year out of this setup anyway.. Next year is a aftermarket block and 15-18 PSI

P.S Frank thought I would need a T-rex also.. He never really seen these 340 from PAS.. But i never di add the T-Rex.. The pump alone was fine..