Stock Bottom & Boost - Reliability List
Registered User
Joined: Nov 2013
Posts: 1
Likes: 0
I have a 2000 z28 I know nothing about turbos I want to rear mount turbo my car I have about 2000 towards it can someone please help give suggestions give me a list of parts I should get. I read some web site called junk yard turbos it helped a little but not enough.
This thread is encouraging!
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. I don't think I ever asked you, what size/specs on that turbo?
How's it all holding 22# now?
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.
How's it all holding 22# now?
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?
Haven't pulled it apart yet but I did find ringland chunks in the exhaust manifold. I have 46 1/4mile passes on my 100,000mile stock bottom end lq4 f1a procharger
2 times on the dyno with like 16 runs and around 3000 street miles
It made 782rwhp and 674tq at 14psi and run a best time or 9.05@151
2 times on the dyno with like 16 runs and around 3000 street miles
It made 782rwhp and 674tq at 14psi and run a best time or 9.05@151
Launching!
Joined: Oct 2010
Posts: 263
Likes: 0
From: hugo okla.
Lm7 5.3
Ebay headstuds 5.7 h.o hgaskets
arp rod bolts
new gm bearings hasting moly rings gapped for blown racd
218/229 545 114 cam on elgin beehives 150seat 400open ls7 lifters trickflow p.rods
gmpp intake qft 750ban with custom brpv csu hat
forced inductions s480 83mm 1.1ar turbine,60mm gate n bov
a.i.s. water meth at 80% meth the rest -20washerfluid.timing 14* by 7lbs and at 8lbs meth turns on and adds back in another 3* for total of 17* atax boost.im gna lower that timing to only advance another 1* for 15* total this spring.
Motor has two hard seasons on it in the boat, msd 6012 shows 46hrs on it of hard runtime.it cruises the lake at 3800
ran 108 in 900ft and current impellor shows i was making 850-900hp at the crank.its a direct drive to my jetpump.boost was 20lbs at 6900rpms at the 900hp absorption chart for pellor. looking to do 7200-7300 on 20lbs or less and stay on pumpgas 93 and watermeth injection.sold the single turbo setup and built a twin long ss tube headers. with twin .81ar 70mm on3 turbs with twin 60mm gates.the single deal choked at 6900, i dont think this twin deal will choked until 7500+ so we re good now to run modified eliminator class next spring , 1/4 in 10.0 on water.we ll do 8.0 1000ft racing as well.
only failure so far was a number 2 piston when meth tank ran dry during a pass which was my fault
i beat this stock bottom end like it owes me money
Ebay headstuds 5.7 h.o hgaskets
arp rod bolts
new gm bearings hasting moly rings gapped for blown racd
218/229 545 114 cam on elgin beehives 150seat 400open ls7 lifters trickflow p.rods
gmpp intake qft 750ban with custom brpv csu hat
forced inductions s480 83mm 1.1ar turbine,60mm gate n bov
a.i.s. water meth at 80% meth the rest -20washerfluid.timing 14* by 7lbs and at 8lbs meth turns on and adds back in another 3* for total of 17* atax boost.im gna lower that timing to only advance another 1* for 15* total this spring.
Motor has two hard seasons on it in the boat, msd 6012 shows 46hrs on it of hard runtime.it cruises the lake at 3800
ran 108 in 900ft and current impellor shows i was making 850-900hp at the crank.its a direct drive to my jetpump.boost was 20lbs at 6900rpms at the 900hp absorption chart for pellor. looking to do 7200-7300 on 20lbs or less and stay on pumpgas 93 and watermeth injection.sold the single turbo setup and built a twin long ss tube headers. with twin .81ar 70mm on3 turbs with twin 60mm gates.the single deal choked at 6900, i dont think this twin deal will choked until 7500+ so we re good now to run modified eliminator class next spring , 1/4 in 10.0 on water.we ll do 8.0 1000ft racing as well.
only failure so far was a number 2 piston when meth tank ran dry during a pass which was my fault
i beat this stock bottom end like it owes me money Last edited by IMPATIENT 1; Nov 29, 2013 at 11:45 AM.
My black truck sees 22psi on the regular and has been at 20psi for about 7 months, beating on it every weekend. Its the one that made 950 on 17psi. Better weather and more boost, its probably cracked 4 digits at the tires by now on a few occasions. Its pushing through my converter a bit though...eating up some mph. LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Resident
Joined: Jul 2010
Posts: 905
Likes: 0
From: VA
118k miles install 127k currently, T76 front mount turbo, 93 oct NO meth on 16psi, stock 01 5.3L short block, 243 heads, ls9 head gaskets. runs great, was DD up till a month ago, didnt go a day with out seeing boost lol, still holding strong, unknown rwhp or 1/4 time, will update this spring/summer with HP numbers or if something gives
Staging Lane
Joined: Feb 2014
Posts: 92
Likes: 0
From: Seguin Texas
TECH Fanatic
Joined: Mar 2011
Posts: 1,916
Likes: 8
From: Statesville, NC
I think its funny the highest on the "sticky" list is mid 600s when a bunch of us are near or more 900rwhp on stock cam only boost builds. Need a sticky that's current. I made 775/669 stock cam only s475 ls1 on 16psi pump gas/meth. On 23 psi now but no numbers for that. 3000 miles of hell and still together. I see my video isn't far above this post. Just like to see someone take over the sticky or let that one guy that made an updated list become the sticky.
I broke ring lands on an untouched LS1. The gap was .016 when I tore it down and measured it. Many get away without opening them up, I wasn't so lucky!
Launching!
Joined: Oct 2003
Posts: 267
Likes: 14
From: Chicago
Pt-88, custom cam, tsp pushrods, arp rod bolts, prc springs, and recently added arp head studs.
15lbs made 807 on e85 corrected at 5500'. A little over 700rwhp uncorrected.
Been on boost since 75,000 miles Od is around 85,000 miles.
Car has been 9.69 at 1.41 on 14lbs. Doesn't look like this list gets updated anymore.
TYPE ----- BOOST -- RWHP -- INSTALL -- SINCE -- BROKE?
Pt-88 ----- 15lbs ----700ish ---75,xxx ----- 85,xxx ---- N
15lbs made 807 on e85 corrected at 5500'. A little over 700rwhp uncorrected.
Been on boost since 75,000 miles Od is around 85,000 miles.
Car has been 9.69 at 1.41 on 14lbs. Doesn't look like this list gets updated anymore.
TYPE ----- BOOST -- RWHP -- INSTALL -- SINCE -- BROKE?
Pt-88 ----- 15lbs ----700ish ---75,xxx ----- 85,xxx ---- N
The key to a stock short block surviving, is watch the air fuel ratio, and watching detonation. Buick Grand nationals have hyper-eutectic pistons as well, I was running 25 pounds of boost, with meth. Lots of the Buick guys where, but if you detonate, even just once, it was smoked. It comes down to tune, and watching your air fuel.
I suggest people getting a wide-band, to watch the air fuel at the higher rpm levels. On my stock blown pro charged collectors edition, I watched it like a hawk. I never exceeded 11.5.. See on the Buick's you can adjust fuel pressure to control your air fuel. I would suggest to get an adjustable set up, if you run more than 500 rwhp... I know stock short blocks can handle up to 18 pounds, when you creep up on it, and if you have the right set up. This on a turbo set up, though.. I also suggest, people put on 317 heads, if they run more than 10 pounds of boost. The compression really creates the heat, and increases the chances for detonation. Detonation is the killer to these brittle pistons... It is like taking a hammer, and hitting these brittle pistons at full force with your hand... NOT GOOD....
Tune is the most important.. I personally would not run more than 8 pounds on a stock motor without changing the heads, for pro charge set ups... However, you can shoot a cooling 100 shot after the blower, before the intercooler; if you want more power. I seen lots of guys, run deep tens, with 7 -8 pounds of boost, with a 100 shot...
If the tune is right, there is no reason you cant get many years of enjoyment out of these stock motors... The buick guys are the masters of making stock hyper-eutectic pistons survive at extremely high boost levels. But the compression is 8.5 on those motors... This is why, to invest in a good set of 317, may be a good idea, if you want to run more than 8 pounds of boost...
Last edited by stage274; Aug 18, 2014 at 08:05 PM.