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#126 |
Turning Wrenches Daily
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,128
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Re: LS engine swap info
hmm strong smell of gas during starting attempts. starts with starter fluid. let me ask a mechanic friend of mine and see what he says to check next. hmmm interesting problem the vats disable I am guessing?
sean Posted via Mobile Device
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!! 1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342 2016 Ram Big Horn 4WD parts hauler 2010 Chevy HHR wife new car after the circled problem blew up!!! 1981 Ram D150 /6 auto Wife's sunday driver Living outside Gladewater Texas now working in Longview at the hospital there future project toys: 1966 Chevy K14 carryall aka Smurfette future project ![]() |
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#127 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
Only thing i know of thats not hooked in the sensors on the exhaust
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#128 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,541
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Re: LS engine swap info
sounds to me like it really isnt getting fuel, have you checked your fuel rail and make sure it isnt plugged? If the engine was out of the truck/van for any length of time, it could have gotten gummed up.
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Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 ![]() ![]() ![]() support our troops! |
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#129 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
I've cleaned the rails a couple of times...we were wondering the same thing....after tryin to start it, there is fuel on both rails and pressure at the shrader valve turns over, runs with starter fluid, but not on its own...no throttle hooked up but shouldnt need that yet anyway
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#130 |
Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: LS engine swap info
I may have missed it......but where the injectors cleaned?
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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#131 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
uuuummm cleaned, no blew them out with air, wiped off, rails blown out, what and how should i clean them??? thx p.s. i can see both tiny holes on the end, matters???
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#132 |
Truck and auto performance nut
Join Date: Feb 2007
Location: McKinney,Texas
Posts: 3,848
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Re: LS engine swap info
not sure how they are cleaned...just kow there are services out there for it as well as "matching" the injectors for power...but have heard of several LSx builds with used motors that sat for a long time coming across clogged injector issues.
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Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken |
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#133 | |
LSX addict
Join Date: Jun 2009
Location: Tyler, Texas
Posts: 262
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Re: LS engine swap info
Quote:
also, you can test your injectors using an OHMS meter (multimeter). just unplug them and touch the prods to the 2 in the injector. i think the LS1's are 14-16ohms. Posted via Mobile Device
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-1982 C10 SWB GMC Sierra [undergoing 6.0/4L80E swap with mild restoration] Last edited by kSStamp0182; 02-19-2011 at 11:16 AM. |
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#134 |
Registered User
Join Date: Sep 2005
Location: sc
Posts: 1,203
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Re: LS engine swap info
with this ethanol fuel the injectors clog alot easier than they used to, to identify injector problems I lifted the fuel rail and turned it over like I was going to start it, this showed 4 bad injectors. I had used the noid lights and determined they were being told to fire but they were not firing.
Also, if the PCM is set up to run a MAF and O2s that all needs to be hooked up, if its set up for speed density do you have the IAT working? most of these have a 5 wire MAF so you either have to plug in MAF to get the IAT info or pull the wiring for it and wire in a seperate IAT (I use LT1 IATs from Adv Auto). And we are assuming VATS has been turned off.
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71 Cheyenne C10 LWB cam'd 6.0/T56 Swap Last edited by Shon; 02-19-2011 at 01:26 PM. |
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#135 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
well well its was the brand f'n new fuel pump that was bad put another new one in , started right up runs ruff, but runs (1 step forward) wow....thats unusual......so i got hopefully a guy comin this week to help me figure out the rest and wire up everything.....7 @ SHON WHOOOO MAN slow down
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#136 |
Turning Wrenches Daily
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,128
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Re: LS engine swap info
hey Dave,
Lol that is all fuelinjectionese you are hearing and will need to get used to. as to what he is talking about they are: IAT: Intake air temperature measure the temperature of incoming air on the engine VATS: Vehicle anti theft system: integral part of the computer that must be shut off to run these trucks without a coded ignition key MAF Mass air flow sensor measures the amnoutn of incoming air to adjust the fuel injector spray to get things jess right. ![]() Sean
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!! 1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342 2016 Ram Big Horn 4WD parts hauler 2010 Chevy HHR wife new car after the circled problem blew up!!! 1981 Ram D150 /6 auto Wife's sunday driver Living outside Gladewater Texas now working in Longview at the hospital there future project toys: 1966 Chevy K14 carryall aka Smurfette future project ![]() |
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#137 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
helps thx no idea on any of this stuff tomorrow i'll look at the brain, see If i can determine what they removed/added thx 4 the help as always
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#138 |
Turning Wrenches Daily
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,128
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Re: LS engine swap info
if the truck is running it sounds like it has been removed but never hurts to check that out otherwise might get out of the driveway then die immediately not fun in one of these trucks lol.
Sean
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!! 1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342 2016 Ram Big Horn 4WD parts hauler 2010 Chevy HHR wife new car after the circled problem blew up!!! 1981 Ram D150 /6 auto Wife's sunday driver Living outside Gladewater Texas now working in Longview at the hospital there future project toys: 1966 Chevy K14 carryall aka Smurfette future project ![]() |
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#139 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
hey wolff, how many quarts of oil these 6 litres take, plus i have the shallower oil pan from the firebird??? & do u know approx how much stays in the engine when we drain the oil?? & what about the tranny (4l80) How much does it hold thx again
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#140 |
Turning Wrenches Daily
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,128
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Re: LS engine swap info
vortec 6 liter between 6 to 6.5 quarts and trans 4l80 roughly 7.7 if it has not been overhauled or completely drained at any time.
Sean
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!! 1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342 2016 Ram Big Horn 4WD parts hauler 2010 Chevy HHR wife new car after the circled problem blew up!!! 1981 Ram D150 /6 auto Wife's sunday driver Living outside Gladewater Texas now working in Longview at the hospital there future project toys: 1966 Chevy K14 carryall aka Smurfette future project ![]() |
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#141 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
thx
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#142 |
LSX addict
Join Date: Jun 2009
Location: Tyler, Texas
Posts: 262
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Re: LS engine swap info
the fbody pans are 5.5
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-1982 C10 SWB GMC Sierra [undergoing 6.0/4L80E swap with mild restoration] |
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#143 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
ok guys looks like the PO had my "brain" played with by fuel injection specialties, i think in texas del VATS/off road/del emissions....6500 rev/no speed./3.08...totally has wrong tire size and gears.....oh boy now what my gears are the 3.83 ...and wheels are 22's...any good news???
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#144 |
Turning Wrenches Daily
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,128
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Re: LS engine swap info
Hey Dave,
Should be any problem get into contact with fuel injectoin specialties and see if they can chenge the programming on your gearing and tires size shouldn't be much of a problem to do that. their contact number is: 210 654-0774 Sean
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!! 1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342 2016 Ram Big Horn 4WD parts hauler 2010 Chevy HHR wife new car after the circled problem blew up!!! 1981 Ram D150 /6 auto Wife's sunday driver Living outside Gladewater Texas now working in Longview at the hospital there future project toys: 1966 Chevy K14 carryall aka Smurfette future project ![]() |
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#145 |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
what problems am i looking at using it like it is tire size would just be the speedometer, correct? but the gears is my biggest concern?
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#146 |
Turning Wrenches Daily
Join Date: Sep 2003
Location: Gladewater Texas
Posts: 1,128
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Re: LS engine swap info
no it is more than just the speedometer, the engine itself reads data off that transmission that it needs to operate correctly. It changes the shift timing and multiple other issues with fuel mixtures and such. I shouldn't be very expensive to get those parameters changed any tuning shop that uses EFI live or HP tuners can corrent that pretyty quickly for you.
Sean
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Work! Play! Work work work! Money to play with. 64 GMC, 66 burb 4x4, and now 64 1ton money pits......ahhh life is good. Upcoming move back to Texas Dallas bound we are this september!!! 1964 GMC I1500 2wd (my baby) 8.1 allison 6 spd conversion Aka Smurf http://67-72chevytrucks.com/vboard/s...d.php?t=438342 2016 Ram Big Horn 4WD parts hauler 2010 Chevy HHR wife new car after the circled problem blew up!!! 1981 Ram D150 /6 auto Wife's sunday driver Living outside Gladewater Texas now working in Longview at the hospital there future project toys: 1966 Chevy K14 carryall aka Smurfette future project ![]() |
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#147 | |
dave
Join Date: Jul 2007
Location: el cajon
Posts: 558
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Re: LS engine swap info
thx wolff, a wealth of info you are....looking for some 1 here in san diego who can do it.....ANOTHER question.....top of the engine there is )2 cables the throttle and ? whats the other and do i need it? i only grabed the throtte cable thx again
Quote:
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#148 |
MadMan
Join Date: Nov 2010
Location: Hammond, La.
Posts: 490
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Re: LS engine swap info
I will need this info....
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81" Shortbed C10 Full Restoration underway, who needs a budget?? LS Pro Touring Build |
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#149 |
Registered User
Join Date: Feb 2011
Location: madison, IN.
Posts: 484
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Re: LS engine swap info
did not read everything so sorry if i missed it but in a 4x4 can i expect to get better MPG's with an ls or lt swap? someone told me that in a 72 with a 355 and an edelbrock carb that would probably be as good as it gets, but i can not hardly belive that with 6.0's and 5.3 getting 15+ mpg in a new truck it has to get better than an old 355 ( mabey not)
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#150 | |
Registered User
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 2,396
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Re: LS engine swap info
Quote:
I can tell you right now, my 72 blazer with it's 355, mild crane cam, performer rpm intake and 750 holley carb, 350 turbo, 3.07 gears and 33" tall tires. I get 13 mpg around town in stop and go. On the highway cruising at 70 mph at 2400 rpms, I get 16 mpg consistently. No overdrive, no fuel injection. Just a good tune and sensable driving. With the 6.0 (364 cubes) and 4L60E I am certain I'll do even better. For starters, the factory tunes in the trucks are pretty lame, with single digit timing in the tables, etc....it's no wonder the new trucks aren't that great on mileage. All the emissions stuff to run through doesn't help much either. Also there are a few tricks I can do in the tune to find 2-4 mpg in the part throttle areas. Doing the math,,cruising as 70 mph with this setup is only 16-1700 rpms (I'd like to see it a tad higher) and a gear change may be in order. In any event, by the time I'm done, 20mpg or more highway isn't out of the question. I tune my 4th gen camaros, and get 30+ mpg highway out of those with the LS1/6 speed combo. |
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