PhantomBLKGoat

Alright so now I’m curious. What would you all expect a build like this N/A to make power wise? It was dyno tuned at 430hp and that number seems a little under tuned to me. Here’s what’s done to the engine and I did put 80# injectors on it as well as a bigger fuel pump.

30 over Ls1 technically a 5.8L -2cc oversized flat top pistons 11:7.1 compression, Hastings bearings, high volume oil pump, double roller billet timing set, patriot stage 3 heads with titanium springs, trunion upgraded aftermarket rockers, Texas speed ms4 camshaft.

Thanks in advance!

Ls1Rx-7

iTrader: (4)

Surprised it made over 400hp with Texas Speed parts on it. Terrible company to work with, if you want more power talk to cam motion and get a properly spec’d cam.

PhantomBLKGoat

yeah I just got it as a donor engine. I blew my ls2 so I threw that in because I got it cheap. I’m going to be building a lq9 for it the way I want it. Then I’m gonna build one more the same in case I blow that one up. If I personally built it I’d go with a different cam

jasons69chevelle

80lbs injectors 100% duty is nearly 1450 hp crank 80% is around 1100hp NA.

you need 35-38 injectors at the most. Shocked the engine even runs. Did you use them 80’s in that LS2 if so did it wash the cylinder bores?

Your injectors would be running like 35-38% duty cycle at wide open throttle.
AT idle I’m not even sure how it’s running.

G Atsma

80# injectors.... NOT tuned for them.... I'd say it's a wash......

01CamaroSSTx

iTrader: (3)

100% duty cycle with E85 maybe. What's hurting horsepower is those heads and that bore.

LilJayV10

iTrader: (39)

Be happy you made 430 with that combo.

LilJayV10

iTrader: (39)

First thing I'd suggest is learn how to build an engine properly.

02redchevy

People idle with 80 lbs injectors all the time on turbo cars... same with 210lb injectors so I don't see your point at all.

jasons69chevelle

[QUOTE=02redchevy;20483181]People idle with 80 lbs injectors all the time on turbo cars... same with 210lb injectors so I don't see your point at all.[/QUOTE
😂🤣 you don’t see my point, not going to explain it either. Because it’s perfectly clear.

02redchevy

[QUOTE=jasons69chevelle;20483195]I would error on the side you don't know what you're talking about. He said it was dyno tuned. It should easily idle with 80lb injectors.

Ls1Rx-7

iTrader: (4)

Maybe theyre talking about the chinese Deka 80 copies? My 5.3 was running around on id1300 injectors without any issues. People dont seem to realize that some of these turbo cars run 2000cc+ injectors and they idle fine. Its not like theyre moving any more air than a n/a engine at idle so i think people are making a bigger deal than they should. Any injector can run like **** and wash out the cylinders if its not tuned right.

jasons69chevelle

Op is using these injectors with a NA engine not a Turbo that would use a boost referenced fuel regulator ( lowers the pressure at idle)
op hasn’t posted again, he’s or she’s clearly blown engines before.

02redchevy

That has nothing to do with it. A turbo doesn't make pressure at idle. You don't know what you're talking about so please don't try to act like you do.

LilJayV10

iTrader: (39)

The vacuum referenced fuel pressure regulator....lowers the FUEL PRESSURE AT IDLE. That's what he is referring to in that sentence.

Read the god damn post before you jump in talking about something that you did not comprehend when you read it just because you think you are smarter, which obviously you aren't.

02redchevy

Again, it does LOWER fuel pressure, but HARDLY enough to make a difference in this case. MAYBE you should try to understand that in and of itself. It goes from maybe 43psi at idle to roughly 30psi---not substantial in the case of overly large injectors.
Let me guess, you clearly think it was a case of big injectors causing the issues... AGAIN there are people running 210 injectors on 5.3s that don't have an issue one with "too big of an injector" so before you say "read the god damn post" like an idiot, please remember, the side of the argument you're on is completely wrong.

LilJayV10

iTrader: (39)

Let's keep it in context. I replied to your post to jason69chevelle and you trying to be "cool guy" and telling him he doesn't know what he is talking about.

He was talking about fuel pressure and you start talking about how turbo's don't make boost at idle.


Anyway, carry on.

02redchevy

For the love of God.... The entire thread has been about injectors being too big. Maybe follow along.