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#1 |
Addicted to Rust
![]() Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
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Square Body LS swap guys
I am having an issue with my speedo. I have a 90/91 burb cluster and it is about 30 mph slow. The Tech 2 indicates 30+ mph and the speedo is indicating approx 5-8 mph. Any body have to use a DRAC with one of these? Any body have a good place to have one of these checked or serviced? Jay
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Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public. |
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#2 |
1965 Chevy C10, 2005 4.8L/4l60
![]() Join Date: Aug 2004
Location: DFW Texas
Posts: 8,541
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Re: Square Body LS swap guys
where is your speedo hooked up to? Vss off trans or right off the PCM?
If PCM, you think the gears/tire size is wrong?
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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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#3 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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Re: Square Body LS swap guys
I used the cluster in an LT1 swap, and it worked fine (once I got a good speedo). My first one, the odometer worked, the second one the speedo worked and the odometer didn't. I figured the odometer not working was the lesser of two evils. I talked to Bob about how he wired his with the LS swap, and it was running the VSS out on the PCM directly to the pin on the cluster; no DRAC. The PCM is the buffer rather than the DRAC. Sounds like a bad speedo. I work at a GM dealer, Speedometer Service and Specmo both wanted $200 to go through the cluster for repair. Cheaper to find another one in my case.
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1974 Jimmy- 5.3/4L80e/NP241 |
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#4 |
Addicted to Rust
![]() Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
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Re: Square Body LS swap guys
The speed on the scanner is seat of the pants right. So the gear tire combo in the program is right. I guess the speedo head is bad. The PCM is hooked straight to the cluster input. Jay
__________________
Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public. |
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#5 |
BMW & ASE Master Certified
Join Date: Feb 2004
Location: Houston, Texas
Posts: 1,262
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Re: Square Body LS swap guys
what about the gear ratio.. what program are you using?
clint
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1987 Silverado - L83 5.3 w/ 6L80e ,A/C,P/W,P/L,TILT, HID projectors, Wilwood C-10 Pro Spindles w/ 2018 silverado front brakes & C-5 Corvette Rear Disc Brakes 1999 BMW 528i - 5.7 LS1 w/ 4l60e, Ford 8.8 IRS w31 spline posi & FX-r projector retrofit New project: 2006 BMW x5 6cyl AWD to L83 6l80e 4wd to 2WD / RWD A poor man buy's it twice finally got my domain name back, 87chevy.com.... site rework in progress |
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#6 |
Addicted to Rust
![]() Join Date: Dec 2009
Location: Abbeville SC
Posts: 1,030
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Re: Square Body LS swap guys
I had Justin at black bear tune it. I don't want to have the ability to tune it, or I will tweak it until it breaks.
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__________________
Current trucks: (48 GMC100 320 inliner) Gone (48 Suburban in pieces) Sold 87 GMC CCSB 5.3 4l60E Daily Driver ECTA National record holder XO/PP We never really grow up, we just learn how to act in public. |
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#7 |
Account Suspended
Join Date: Jul 2008
Location: Where I come from, it's cornbread and chicken...
Posts: 3,122
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Re: Square Body LS swap guys
Hey Jay, I have an electronic speedo gauge cluster. I just might have to make a trip to abbeville for a weekend vacation. Whatcha say? Give me a call buddy
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