experts needed: LS3 Safe Boost
12-22-2009, 09:21 AM
#1
Instructor
Thread Starter
experts needed: LS3 Safe Boost
I am getting a Procharger race valve installed and I was thinking of getting a smaller pulley installed at the same time.
here are my specs:
P1SC with a 4.25 pulley for 6.5 lbs of boost = 620 RWHP 543 lb on
91 octane pump gas only - no meth
I have a upgraded springs and push rods along with a cam and headers.
what is a safe level of boost for an LS3 - I was thinking of going to a 4 inch pulley...
experience please
ryan
here are my specs:
P1SC with a 4.25 pulley for 6.5 lbs of boost = 620 RWHP 543 lb on
91 octane pump gas only - no meth
I have a upgraded springs and push rods along with a cam and headers.
what is a safe level of boost for an LS3 - I was thinking of going to a 4 inch pulley...
experience please
ryan
Last edited by birk1; 12-22-2009 at 05:52 PM.
12-22-2009, 11:35 AM
#2
Wow.. Those are really good #'s for the P1 and 6.5psi.. I wouldn't turn up the boost unless your running meth.. I run a D1 @ 12-13psi w/ meth and make 710/636.. My afr is 11.2 I feel this is safe and am very happy with the results, but if I were you, I wouldn't push it any more without meth.
12-22-2009, 11:41 AM
#3
Premium Supporting Vendor
Member Since: Oct 2004
Location: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Posts: 23,315
Received 1,085 Likes
on
656 Posts
Thats a lot of power for low octane fuel, I would leave it there and be happy if I was you. Good luck with it.
12-22-2009, 05:08 PM
#5
Instructor
Thread Starter
12-22-2009, 05:53 PM
#7
Instructor
Thread Starter
no meth...I do have a kit in the garage...just never put it on as I want to keep the car simple.
so just 91 pump gas
I figured I could had a couple of pounds of boost and be safe, but it sounds like that might not work without pulling timing etc... to keep it safe.
so just 91 pump gas
I figured I could had a couple of pounds of boost and be safe, but it sounds like that might not work without pulling timing etc... to keep it safe.
12-22-2009, 10:44 PM
#9
Former Vendor
12-23-2009, 10:43 AM
#10
Le Mans Master
I'm at 672rwhp on my LS3. 8.5psi with TVS2300. I do plan on adding a boost cooler soon. Meth or maybe WW fluid. I'm not going to tune it to depend on the meth though. The power it's making now is good enough for me. I guess I have about 4K miles on this setup. So far so good.
12-23-2009, 10:50 AM
#11
Drifting
Member Since: Apr 2008
Location: halton region Ontario
Posts: 1,840
Likes: 0
Received 3 Likes
on
3 Posts
If ya have a meth kit ...... use it....easy.....along with the 4" pulley....and a fresh tune.
I know ya want more power....or will....inevitable.
my $0.02
merry xmas
12-23-2009, 11:08 AM
#12
My '09 made right on 600rw at 5.5psi with the turbos. I honestly don't see how adding more power makes the car any faster since it's constantly riding the traction control in the first three gears. 600rw is a LOT of power, be happy with it, enjoy it, and don't get greedy.
12-23-2009, 11:24 AM
#15
I'm at 672rwhp on my LS3. 8.5psi with TVS2300. I do plan on adding a boost cooler soon. Meth or maybe WW fluid. I'm not going to tune it to depend on the meth though. The power it's making now is good enough for me. I guess I have about 4K miles on this setup. So far so good.
Those are crazy #'s considering a ZR1 with CAI, Headers, and race fuel and pullied to 17psi only makes 700/700 with essentially the same blower.. Are you running meth?
12-23-2009, 05:00 PM
#16
Le Mans Master
No meth yet. I run 93 octane and stock heads. Compared to a ZR1, I have a much bigger cam, much better exhaust (long tube headers, no cats, straight thru muffs), higher compression ratio, a better intake, and a more aggressive tune.
Last edited by old motorhead; 12-23-2009 at 05:34 PM.
12-24-2009, 12:29 AM
#17
Le Mans Master
Alex Trebec - "The answer is, a safe level of boost for an LS3".
Ding - "What is KABOOM -1 Alex?"
Jez, I don't want to be the Grinch who stole Christmas here but am I the only one who's going to call BS? 620 RW with 6.5 PSI, 91 octane, no meth? With a P1 no less?
Either the boost gauge is lying or the dyno is. I'm a little short on cubes but I have a similar setup and I need to push ~11.5 PSI to get my numers.
Ding - "What is KABOOM -1 Alex?"
Jez, I don't want to be the Grinch who stole Christmas here but am I the only one who's going to call BS? 620 RW with 6.5 PSI, 91 octane, no meth? With a P1 no less?
Either the boost gauge is lying or the dyno is. I'm a little short on cubes but I have a similar setup and I need to push ~11.5 PSI to get my numers.
12-24-2009, 12:36 AM
#18
Team Owner
12-24-2009, 12:37 AM
#19
Team Owner
Alex Trebec - "The answer is, a safe level of boost for an LS3".
Ding - "What is KABOOM -1 Alex?"
Jez, I don't want to be the Grinch who stole Christmas here but am I the only one who's going to call BS? 620 RW with 6.5 PSI, 91 octane, no meth? With a P1 no less? Either the boost gauge is lying or the dyno is. I'm a little short on cubes but I have a similar setup and I need to push ~11.5 PSI to get my numers.
Ding - "What is KABOOM -1 Alex?"
Jez, I don't want to be the Grinch who stole Christmas here but am I the only one who's going to call BS? 620 RW with 6.5 PSI, 91 octane, no meth? With a P1 no less?
Either the boost gauge is lying or the dyno is. I'm a little short on cubes but I have a similar setup and I need to push ~11.5 PSI to get my numers.
You broke the ice, I was thinking yeah right too!
12-24-2009, 07:56 AM
#20
Le Mans Master
EPP made 671rhwp on just 8.4psi. Mustang dyno. It was done on an LS3 powered Camaro. Procharger D-1sc, cam, and bolt ons. The LS3 headed motors are very boost freindly. Don't guys pick up 40 to 50 rwhp when going from LS2 to LS3 heads on a cam only LS2? If you make them breathe easy (upgrade intake, heads, cam, and exhaust), you don't need a huge amount of boost for 600+ rwhp.