slowlsx

iTrader: (28)

Curious to see how many guys are running over 10.5:1 with a dual nozzle meth kit and how much boost have you been able to safely run?

I have a forged motor that I really don't feel like tearing apart to change things around on it. Goal is around 700-750rwhp and I think it will take about 10-12psi to get me there possibly less.

Aluminum 5.3 block
3.78 wiseco piston +6cc dome
Eagle H beam Rods
Ls9 Gasket
Trickflow 205 heads
11.2:1 Compression
BTR stage 4 cam 235/242 111+3
1 7/8 long tube headers
Whipple 2.9L with big heat exchanger
10-12psi
Dual meth nozzle kit


Im guessing this motor makes about 550 flywheel. If atmospheric pressure doubles your HP output 14.7psi would net me approximately 1100HP. Divide 550÷14.7 that should get me about 37hp per psi. 8psi should put me around 883hp and meet my 750rwhp goal.

Ws6Dnero

iTrader: (23)

Well i have a forged 370 and milled l92 heads. Compression should be around 10.9-1. I'll be running 91/93 and dual nozzle meth injection. picking the short block up today. curious to know who else is doing the same also

JoeNova

10:1, single nozzle 50/50. 93 pump, stock bottom end, 20 PSI.

Kmspeedie

iTrader: (1)

10:1, dual nozzle 100% meth, 93 pump, 20psi with ZERO problems

slowlsx

iTrader: (28)

That is good to hear! Maybe 11.2:1 won't be that bad of an idea. I need to find out how good the Whipple is at keeping inlet Temps cool. Might need an ice tank.

Thinking about it more, might take a little more than 8psi to make 750 to the tire. It is a 6 speed tho

Detoxx03

iTrader: (14)

10.7:1 here with 93/100%meth and running 11.3 psi. Got some new stuff being done so new results soon.

Rise of the Phoenix

iTrader: (27)

Is running higher compression safer on a turbo setup over say a blower setup, or does it not really matter as long as you run either e85 or meth?

mshadow

I'm on a stock LS3 running 14psi with a novi 1500 meth+93 octane.

JoeNova

Varies greatly. Depends on whether or not running an intercooler, IC type, blower type, etc.

Centrifugal blower with an A/W intercooler typically has the lowest IATs and detonation threshold, because the compressor isn't bolted to the exhaust and it produces lower peak cylinder pressures than a turbo does.

Rise of the Phoenix

iTrader: (27)

D1SC or Vortech T or JT trim blower with a FMIC.

Detoxx03

iTrader: (14)

Centrifugal as are "safer" per se since its linear ans not seeing torque so soon like a positive displacement blower or turbos.

One of my friends cars is TT and cr is at 9.5:1 and another one is a ProCharged setup and cr is at 10.4:1

I like the procharger headunits better. The bracket design leave a little to be desired.

Rise of the Phoenix

iTrader: (27)

I like the procharger headunits better. The bracket design leave a little to be desired.[/QUOTE]

You talking about the Procharger bracket setup? There is a Vortech T-trim blower with a pretty trick bracket/pulley setup for sale on here, but with the Vortech head unit/bracket, it mounts pretty high up in the engine bay, so I don't know how hard it would be to route piping for a FMIC setup.

Detoxx03

iTrader: (14)

You talking about the Procharger bracket setup? There is a Vortech T-trim blower with a pretty trick bracket/pulley setup for sale on here, but with the Vortech head unit/bracket, it mounts pretty high up in the engine bay, so I don't know how hard it would be to route piping for a FMIC setup.[/QUOTE]

Yeah the procharger bracket. More so the tensioner than anything.

Should be fairly simple to get everything going.

Rise of the Phoenix

iTrader: (27)

Thanks! From what I've been hearing, the Vortech T-trim blower is pretty comparable to the D1SC blower, while the JT-trim blower is capable of making more power than a D1SC.

Detoxx03

iTrader: (14)

The T-trim is rated for a little less while the Ti-trim is rated for a little more than a D1SC. The JT/2200 is like a F1D/F1A.

Rise of the Phoenix

iTrader: (27)

Okay, the one in the classified section is a Ti-trim Vortech blower. Damn, decisions, decisions.

eb02z06

iTrader: (18)

Stock LS3 Jam Cam and 91 octane and meth 814 rwhp/664 tq.

Runs 10.4@138.31 at 4120lbs too.

Slowhawk

iTrader: (12)

You just have to figure out the cam timing with static compression. DCR can be easier.

My car was 10.5-1 at 22psi with 93/meth and well over 1000rwhp. Ran high 7's ect. My problem was lifting heads and burning out the rings at that level.