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03 lm7 stock short block, epp blower cam, 243 heads, arp head studs, ls9 head gaskets, MP t76 front mount. ??? rwhp (guessing around 700 ish), 4months on 12psi, 5 months on 16psi, ran its *** off untill i changed exhaust from full exhuast out the back into my borla cat back to a fender dump, not sure if boost spiked or just to much flow for stock fuel rails but detonated 3 and 4 cylinder as soon as it was about to hit 6200rpms, i feel safe in saying if i had proper fuel system it would still be driving to this day
88 foxbody. 2003 4.8 t76 cxracing turbo,turbo smart hyper gate,holley co2 boost controller,comp 232-236 duration 595-601 lift,ls7 lifters,comp push rods,trunion upgrade,trick flow valve springs,meth injection,holley hp efi,ls9 head gaskets,ebay studs,magnafuel 750 pump,80lb deka injectors. Glide with ptc 9.5 billet converter,pro brake. 8.8 with 3.55 gears. Mickey 275-60 pro radials. Car weighs 3370 with me. Went 10.08 at 137mph not hooking at 18 psi boost and 18 degrees of timing shifting at 7100rpm. Never been on dyno but figure 650-700 wheel horse power.
Turbo lq4 broke three pistons in 24 hours with bad timing and vacum ran incorrect i was only seeing 3 lbs boost felt like it was running great. Timing a boosted engine is super critical so i agree with make shure you know that timing is good. for me it was very deceiving.
Bone stock long block lq4
gt45 turbo
Microsquirt
Made 775/668 final numbers on this day. Dyno not enough load so this is on only 16 psi. Makes 21psi on street. Stock ls1 with Tick cam. Stock bolts and all.
S475 turbo.
i can see maybe makin that # but not lasting...hows it holding up man? cus i havva forged ls1 im gunna throw in and if your makin god dam 800 wheel it doesnt even make sense..how have you not leaked somethin somewhere or pushed a head or rod..id like to know how its holding up
1998 TA stock heads and bottom. Comp cams 54-457-11. (Not a blower cam, but I wanted something mean sounding. Lol) D1SC, 8 psi, 460 h/p @4000 rpm (3600 tq conv wouldn't lock), 82,xxx when installed, 89, xxx now. Still going strong. Just need a new tq converter.
2007LH6 5.3 LS7 cam, ebay head studs, pac1218 springs. S472 T6 1.1 ar all in an 85 foxbody.
672rwhp at 18psi
735 rwtq
best so far is 10.26 @141.
Driven about 4000km this summer It goes everywhere including the woodward dream cruise which was 4 hours one way. Runs on pump gas and I have meth injection
I had a Whipple side mount on my 2000 5.3 ECSB from 60k miles to 145k miles making between 6 and 13 psi - different pullies - and from 320rwhp to 440 rwhp. Then I switched over to a MP122 at 145k miles. 14psi from the Maggie makes 525rwhp on a very conservative tune. Engine has just over 150k now.
Motor has never broken *knocks on wood* but I did break an output shaft once.
Last summer, stock LS3 w. Paxton Novi 2200 and 8psi of boost, E85 fuel. 730fwhp. Bit of boost control issues and boost raised to 10psi after that came head gasket failure, took engine apart and found also slight bent on 2 connection rods.
At then repaired fastly with stock parts pistons / rods and kept boost in 8psi with no problems.
SBE Ls1, 71,000 Miles, E-85, 9" rear and built 4l80E, put down 671 on 12 lbs and 18 degrees timing. Has went 6.54 at 106 in the 1/8th. Converter needs tightened up. So far only have 1000 miles on new setup and still going strong.
'98 SS SLP
D1SC with twin intercoolers
10-11psi
571rwhp
Installed around 40k, currently at 42600
Supporting transmission and rear end mods but nothing else on the motor.
No track passes, but occasional spirited driving. Everything has held up great, as usual.
SBE L33 PRC heads 10:1 23psi
Dynojet 921hp 908tq through 6spd on a shotty tune and now retuned!!
Pt78/75 E85 , 9" M9 3.50 gear
Huron Speed V1 kit, LS2 vmax ported intake,
Bosch LPG 160s fed by 2 bosch 044s and 10an feed line returned through factory 6an feed line,
Now it has th400 with brake, PTC converter,
Car has made two dyno pulls and 15 passes on 1/8 mile track leaving on 10psi the 5.75 pass
Stock 5.3, twin borgwerner 366, 16* timing, 22lbs boost, 801whp on dynojet, 9.62@144 w/1.8 60' in 3400lb car. Been going 2 years, beaten viscously daily, Rockey Mountain Race Week 1300 mile veteran, 40+ 1/4 mile passes. Still runs quiet, 35psi at hot 600rpm idle with the a/c on.
Stock 5.3, twin borgwerner 366, 16* timing, 22lbs boost, 801whp on dynojet, 9.62@144 w/1.8 60' in 3400lb car. Been going 2 years, beaten viscously daily, Rockey Mountain Race Week 1300 mile veteran, 40+ 1/4 mile passes. Still runs quiet, 35psi at hot 600rpm idle with the a/c on.
Clean setup! Good to see another car run great without getting greedy with the timing. I have a single 88 on 13-14 degrees and ~21-24lbs.
I ran a 9.6@145 but I'm about 600lbs heavier. Have no idea what horsepower it makes since it hasn't been on a dyno but your setup at least gives me a rough idea.
Stock LM7 5.3 block I've been beating on for about a year. First with a 76mm now with an 88 and it shows no signs of giving up, just keeps getting faster.
- On3 88mm
- 20+ PSI/Haven't dyno'd just street/track tuned
- ~150k miles
- 5k+
- Nothing broken except differentials!
08-19-2014, 06:22 AM
