sr71bb

iTrader: (3)

Assuming the following:

Wet Kit (Dual Stage)
Forged Bottom end incl. Pistons, Rods and Crank
Stock BORE
11:1 Compression
Race Gas
Oringed block with receiver grooves on heads
Stock Bore Aluminum Block


What do you guys think the MAX juice you can run on this setup RELIABLY. I know at least 300 But getting closer to 400 and I have seen problems. I know 600 was tried and that took about 4 seconds to lift the heads!!! LOL I know a dual stage is EASIER on the motor and I will NOT be using a progressive controller.

383LQ4SS

iTrader: (33)

my personaly guess....with some good tuning and well setup dual stage (one stage direct port or dry) I think a true 375-400 at the wheels HP is doable.

The Guy in MY 99TA

The max is 1000 hp if you want to drill and tap your intake to hell and back and THEN add fuel system out of this WORLD!

But if your talking about what is the most you can spray on your stock block....... I'de say a 300 would be the most. You could probably TRY more but it probably isn't going to last very long.

Josh S.

fastlif

iTrader: (1)

500hp direct port and thats iffy, i wouldn't go over 200hp spraying in front of throttle body. Thats with perfect tuning and all safety measures. And I tell youfrom experience, if all is not perfect don't hit it.

And dont try to have direct port on one stage and infront of throttle body on another. Once you are on a directport kit,all velocity through the intake dies, so the throttlebody kit would puddle or at least not distribute well.

just my $.02

taqwache

yea dont try to spray that kit through the intake if it is a wet. if you what the best possible way to spray a hugh shot through the intake i would do what 383lq4 is doing.

DONAIMIAN

iTrader: (18)

If your talking ***** to the wall spraying, go with a Iorn block and the 6.0L Iorn heads, get that O-ringed up and then tell us what the limit is when you get there.

Cmarsh93z

You are going to have to run a 600 shot to catch the Silver AMS car this season Run a direct port and pill it till you kill it.

Chris

sr71bb

iTrader: (3)

Chris, Tell me just ONE person that is running 500+ juice on an LS1 motor!!!!

TEA Brent

Hey if Nitrous Promods can spray 2000-2200 worth of nitrous ( thats Theoretical.... nobody really knows they dont exactly dyno those motors while on the hose) 500 should be a cakewalk on a well prepared LS1 motor.....

sr71bb

iTrader: (3)

500HP juice will absolutely blow the heads off an LS1. The problem is the 4 head bolt per cylinder hole arrangement. The traditional small blocks including LT1's had 5 and can take much more juice. I KNOW 600HP juice lasted about 5 seconds before the heads lifted and you could see the fire SHOOT out between the heads and the block. Now this block was NOT oringed and studded and that WILL make a difference but my feeling is once you start getting over 300-400 you are really pushing it (on a single stage).

taqwache

hum 2000-2200. that sounds good. cant i just get one of those kits and but it on a stock ls1. that will be around 2500hp correct. then i will be the first ls1 in the 7s hehehe. just joken.

taqwache

what is the most anyone has susessfully sprayed on an LS1 so far? maybe i will go for the record at the end of the year.

CorvetteMajor

iTrader: (5)

I agree 300 - 400 is pushing it the heads do start to lift.

z28mccrory

iTrader: (7)

What about 6.0 Block, All forged bottom end, o-ringed, studded, w/6.0 Alm. Heads. Around 11-11.5 compression...my goal is 400

C4VetteLS1

Well the heads wont lift as easy on a iron block...
Plus if its oringed...and studded.that should help take care of most of the lifting problem...

Also with a progressive controller you could ramp in the nitrous. I think spraying a 300 shot out of the hole makes more cylinder pressure than ramping in a 400-450 shot @ high rpm....the higher rpm bleeds off alot...

Im going to try 400 rwhp direct port on my new 408" stroker....i had the pistons custom done with triple thick deck and lowered rings from Diamond. Nitrous gapping on the rings.

Im going to do alot of dyno work on my dyno setting up being very conservative on the timing, dedicated fuel system with 105 unleaded in fuel cell and 100 in the fuel tank. I think ill ramp it in at a 2-second time, from 200 rwhp to 400 rwhp

Any ideas on this??? My nice 475-500 rwhp on motor should move nicely up to the 850 rwhp range on spray....(Makes for a real nice 8 second daily driver!!)

sr71bb

iTrader: (3)

All good ideas, especially with the progressive idea. Thing I was wondering about though is a 300 shot from the get go could possibly be QUICKER than say 400 progressively assuming of course you could hook up the 300 from the START. The BIGGER the bore, in theory the more juice you could run because the pressure caused by the introduction of nitrous is distributed over a wider area. So an all BORE motor could take more juice than an all stroke motor. Contrary to popular belief, I think an ALUMINUM block can take more juice than an iron block because aluminum dissapates heat better. The irony here is I think sleeves (as in darton sleeves) WOULD NOT hold up as well.

So basically, with the mods you mentioned, a progressive 400 should work in my opinion. Whether it would be as quick as a single shot 300-350, I dunno.

C4VetteLS1

Well the only difference with the progressive is that you could work the starting off the line power as high as your tire can hold... I think my car should go 1.3's on a 200-250 rwhp off the line, and the ramped in 400 will work real well for street racing around here...plus at the track itll add another 5+ mph on the top end for an extra couple tenths...

Big Mike

iTrader: (4)

I'm at a 300 shot right now. In the Spring I will be going up in 50hp increments until it won't go no more.