Stock Bottom & Boost - Reliability List
Running 13PSI on stock LS2, 4500 miles so far...
dynoed at 780WHP
https://www.youtube.com/user/HIGHBOOST4G63?feature=mhee
dynoed at 780WHP
https://www.youtube.com/user/HIGHBOOST4G63?feature=mhee
stock bottom end ls1, stock 317 heads, Procomp head studs, gm head gaskets.
single t76 truck manifold kit, 15psi, 506hp/617tq @4300 then ran out of fuel(ve table is off)..getting dyno tuned tomorrow hoping for 650 on stock bottom end.
72xxx-76xxx miles no problems what so ever.
single t76 truck manifold kit, 15psi, 506hp/617tq @4300 then ran out of fuel(ve table is off)..getting dyno tuned tomorrow hoping for 650 on stock bottom end.
72xxx-76xxx miles no problems what so ever.
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TECH Resident
Joined: Nov 2009
Posts: 751
Likes: 0
would like to know what all that thing has.. 
Stock L76 short block, LS9 gaskets, head studs, cam/springs, pump gas and meth. Been beating the **** out of it for 15 months between 16-18psi. 4800lbs, went 133mph in the 1/4 on the street a couple week ago from hp tuners scan data. Good for 136-137 at the track with some tires and a ballsy driver.
TECH Apprentice
Joined: Apr 2012
Posts: 333
Likes: 4
From: New Zealand
Stock LS1 4 door Commodore VT SS with custom STS rear mount 6275 T4 0.81AR
Made 550hp at engine/450rwhp on 5lb spring (peaked at 6.5psi) through 4L60E and 2800stall converter. Got 26mpg best on highway (31mpg imperial) and lasted 12,500 miles trouble free before decided to go to a 2013 LS3 swap.
Problems after tear down at 12,500miles:
1 - LS1 was down 25lb on 1 cylinder due to either detonation or water damage (water injection system leaked into intake.
2 - STS ball bearing turbo blowing smoke, so not impressed with their durability.
New LS3 in same car:
One basemap (no timing put in) the new LS3 made 522rwhp on STS turbo at 8lb before leaning out (running out of pump) so shut down. Since added a 2nd Bosch 044 pump but now the turbo blows oil intermittently so have yet to tune it fully with new Aquamist water/meth system and decent timing.
Now not sure whether to fix the poor durability STS turbo or get a new better turbo for the LS3 like a Comp Turbo billet CT43 6275 .81AR or a Garrett equivalent.
Made 550hp at engine/450rwhp on 5lb spring (peaked at 6.5psi) through 4L60E and 2800stall converter. Got 26mpg best on highway (31mpg imperial) and lasted 12,500 miles trouble free before decided to go to a 2013 LS3 swap.
Problems after tear down at 12,500miles:
1 - LS1 was down 25lb on 1 cylinder due to either detonation or water damage (water injection system leaked into intake.
2 - STS ball bearing turbo blowing smoke, so not impressed with their durability.
New LS3 in same car:
One basemap (no timing put in) the new LS3 made 522rwhp on STS turbo at 8lb before leaning out (running out of pump) so shut down. Since added a 2nd Bosch 044 pump but now the turbo blows oil intermittently so have yet to tune it fully with new Aquamist water/meth system and decent timing.
Now not sure whether to fix the poor durability STS turbo or get a new better turbo for the LS3 like a Comp Turbo billet CT43 6275 .81AR or a Garrett equivalent.
TECH Apprentice
Joined: Apr 2012
Posts: 333
Likes: 4
From: New Zealand
Stock LS1 4 door Commodore VT SS with custom STS rear mount 6275 T4 0.81AR
Made 550hp at engine/450rwhp on 5lb spring (peaked at 6.5psi) through 4L60E and 2800stall converter. Got 26mpg best on highway (31mpg imperial) and lasted 12,500 miles trouble free before decided to go to a 2013 LS3 swap.
Problems after tear down at 12,500miles on LS1:
1 - LS1 was down 25lb on #3 cylinder due to either detonation or water damage (water injection system leaked into intake a few times turning it into a steam engine until it cleared itself). Engine still ran perfect though.
2 - Upgraded STS ball bearing turbo now blowing smoke intermittently, so not impressed with their durability.
New LS3 in same car:
One basemap (no timing put in) the new LS3 made 522rwhp on STS turbo at 8lb before leaning out (running out of pump) so shut down. Since added a 2nd Bosch 044 pump but now the turbo blows oil intermittently so have yet to tune it fully with new Aquamist water/meth system and decent timing.
Now not sure whether to fix the poor durability STS turbo or get a new better turbo for the LS3 like a Comp Turbo billet CT43 6275 .81AR or a Garrett equivalent. Want great torque from 2500rpm and around 560rwhp in daily drive mode at less than 10lb boost.
Made 550hp at engine/450rwhp on 5lb spring (peaked at 6.5psi) through 4L60E and 2800stall converter. Got 26mpg best on highway (31mpg imperial) and lasted 12,500 miles trouble free before decided to go to a 2013 LS3 swap.
Problems after tear down at 12,500miles on LS1:
1 - LS1 was down 25lb on #3 cylinder due to either detonation or water damage (water injection system leaked into intake a few times turning it into a steam engine until it cleared itself). Engine still ran perfect though.
2 - Upgraded STS ball bearing turbo now blowing smoke intermittently, so not impressed with their durability.
New LS3 in same car:
One basemap (no timing put in) the new LS3 made 522rwhp on STS turbo at 8lb before leaning out (running out of pump) so shut down. Since added a 2nd Bosch 044 pump but now the turbo blows oil intermittently so have yet to tune it fully with new Aquamist water/meth system and decent timing.
Now not sure whether to fix the poor durability STS turbo or get a new better turbo for the LS3 like a Comp Turbo billet CT43 6275 .81AR or a Garrett equivalent. Want great torque from 2500rpm and around 560rwhp in daily drive mode at less than 10lb boost.
TECH Fanatic
Joined: Mar 2011
Posts: 1,916
Likes: 8
From: Statesville, NC
755/663 stock 130k mile ls1 with tick cam.
Pump gas/meth
S475 turbo
17-18 psi
Installed 128000 and still going strong
No studs, bolts, gaskets, or anything. All in stock from factory form from year 2000.
Pump gas/meth
S475 turbo
17-18 psi
Installed 128000 and still going strong
No studs, bolts, gaskets, or anything. All in stock from factory form from year 2000.
Last edited by mrstepheneades; Oct 10, 2013 at 10:06 AM.
Ran all season about 100 slips, 1500 street miles. 160k OEM short block. Had 2 bunk pistons and I threw two random piston rod assys in. All OEM fasteners on rods, mains, etc. Also re angle torqued them all to OEM specs. Used original bearings and all. I did gap the original rings for boost. .025 on the top and .030 btm
Best of 9.04 @ 151 at 24psi. 15* of timing on E85.
Going by weight/trap speed that's 812 whp. 900+ at the crank?
Best of 9.04 @ 151 at 24psi. 15* of timing on E85.
Going by weight/trap speed that's 812 whp. 900+ at the crank?
Last edited by Forcefed86; Oct 20, 2013 at 04:03 PM.