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#826 | |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
Quote:
//RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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#827 |
Registered User
Join Date: Aug 2011
Location: Milan, NM
Posts: 6
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Re: Tbi swap build thread
Thanks. I better save myself some time/trouble and go ahead and obtain the 7747.
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#828 |
Registered User
Join Date: Feb 2010
Location: Loganville, Ga
Posts: 170
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Re: Tbi swap build thread
Finally got mine running. cranked on the first try! Any way i i found a 4l60e how would i wire it to work with my comp? i dont have the number with me but i know it is from a 90 4.3 truck but my 350 runs fine with it stock.
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#829 |
Registered User
Join Date: Jun 2008
Location: Lubbock, TX
Posts: 2,047
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Re: Tbi swap build thread
That '90 model tranny is a 700R4, the 4L60E didn't appear until 1993.
Kudos on getting it running! |
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#830 | |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: Tbi swap build thread
Quote:
Posted via Mobile Device Posted via Mobile Device
__________________
miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#831 |
Registered User
Join Date: Feb 2010
Location: Loganville, Ga
Posts: 170
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Re: Tbi swap build thread
well i havent had the exhaust done yet but it seams to run good. but who knows.
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#832 | |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
Quote:
//RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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#833 |
Registered User
Join Date: Feb 2010
Location: Loganville, Ga
Posts: 170
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Re: Tbi swap build thread
16144288 atkn
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#834 |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
BCC: ATKN
Year 1990 PROM Size 32724 ECM #16144288 Program ID: 160 ($A0) Product Line: C1/K1/P1 Engine: LB4 4.3L Transmission MD8 AUTO (700R4) This ECM was specifically developed for V6 application. ECM will run V8, but limp mode will not work and calibration is off for a typical V8. However, you can modify VE and SA tables together with larger injectors. As is good enough to start your motor, but as for driving - very iffy. //RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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#835 | |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: Tbi swap build thread
Quote:
Posted via Mobile Device Posted via Mobile Device
__________________
miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#836 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: Tbi swap build thread
Hey gand, great thread, really helps me in my journey. I am currently working on a TPI swap for my 86 C10.
I am fairly certain I have the VSS figured out. Could someone confirm or deny. I was feeling around on the back of the cluster and felt a square hole right behind the speedo, seems that is where the optical VSS sensor mounts. Would this be true? If so, how do I remove the cluster without breaking it? That was my biggest fear, as I am well aware how fragile this old GM plastic is! |
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#837 | |
Still plays with trucks
Join Date: Jul 2009
Location: Spokane, WA
Posts: 3,556
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Re: Tbi swap build thread
Quote:
Posted via Mobile Device
__________________
miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars |
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#838 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: Tbi swap build thread
ok cool. I have already pulled the pad so I'll give it another try today
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#839 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
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Re: Tbi swap build thread
You guys rock. Saved me $75 on a JTR sensor.
![]() There it is, the speed sensor hole. ![]() Installed an 80's Malibu VSS I had lying around. Perfect. The four wires coming off the VSS, My guesses are: Brown - 2k signal to ECU Blk/wht - ground Pink/blk - Hot in run/start Yellow - 2k signal to cruise Yes or no? There isn't much info on retrofitting an optical VSS. |
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#840 |
Registered User
Join Date: Feb 2008
Location: sacramento california
Posts: 204
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Re: Tbi swap build thread
suscribe
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#841 |
Registered User
Join Date: Feb 2010
Location: Loganville, Ga
Posts: 170
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Re: Tbi swap build thread
ok i decided on the nv3500. So my question is do i need a drac to make my vss work or can i wire the tailshaft mounted vss right to the ecm?
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#842 | |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
Quote:
The Dokota Digital converter module is a Swiss army knife equivalent of GM DRAC minus the PITA. This module is pricy, but time and effort may justify the initial cost. Check their website SGI-5 Universal Signal Interface Unit. //RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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#843 |
Registered User
Join Date: Feb 2010
Location: Loganville, Ga
Posts: 170
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Re: Tbi swap build thread
ok, also i have a question about dynamic efi. I have browzed there web site how hard is it to learn how to use.
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#844 | |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
Quote:
I run EBL on all my conversions - see youtube videos. The key to TBI is selecting camshaft that provides about 14-16 in-Hg at idle and steady idle. After market camshaft with LSA of 112deg and higher with up to 214deg at 0.050 will do the trick. Tighter LSA (<112deg) results in lumpy idle which screws up MAP sensor readings and ECM will over fuel the engine. Long duration camshafts >220 deg also create havoc for O2 sensors at idle. Our trucks need low end torque, and high RPM HP is never really needed in a street truck. What we need is flat torque from 1500 to about 4500 RPM to get the weight going (and keep it going). A good RV cam will do this trick without creating problems for TBI system - for example CS1014R (flat tappet). //RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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#845 |
Registered User
![]() Join Date: Oct 2011
Location: Wildomar, CA
Posts: 466
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Re: Tbi swap build thread
Great thread guys! Looking to TBI my 85 here in the near future....
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#846 |
Registered User
Join Date: Feb 2011
Location: cassadaga, ny
Posts: 28
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Re: Tbi swap build thread
looking to do a tbi swap to my 86 k30 dump. i got a 89 c2500 that used to be my dd. i plan on pulling the motor, wiring and all relays/sensors from under the hood, and computer soon. is there anything else that i will need from the donar truck. also am i gonna have to replace the 86 wiring under the dash or will i be able just to put power to the computer to run all engine componets.
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#847 |
Registered User
Join Date: Feb 2010
Location: Loganville, Ga
Posts: 170
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Re: Tbi swap build thread
Im redoing my wiring on the 65 tbi, i would like some pictures of the swap done on 60-66 trucks please.
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#848 | |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
Quote:
//RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) Last edited by rfmaster; 01-12-2012 at 11:40 PM. Reason: + more info |
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#849 |
Registered User
Join Date: Apr 2003
Location: Indep, MO
Posts: 5,893
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Re: Tbi swap build thread
A guy a few posts back asked about 700r4/4l60 integration. What's involved? I have an 87 sb, 350tbi/350 and of course I want the od. Any info on what might be involved? Really kinda thinking of getting a 94/95 computer and running tbi/4l60 like I had in my 95. Is this easy? A pipe dream? Anyone done it? I have 2 90 2wd burbs in a yard not far away that are still fairly complete with electronic speed outputs for the 700's. My 87 t350 is a cable. Will the tailshafts swap? Can I just put a later cluster in my truck? Sorry for all the questions, but I've been wondering. Thanks, Chip.
__________________
Boppa's Old Yeller Truck Build, Old Yeller's New Heart! Project Buzz Bomb Flyin' Low! |
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#850 | |
Registered User
Join Date: Oct 2003
Location: OC CA
Posts: 1,374
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Re: Tbi swap build thread
Quote:
The 93-95 PCM's are (were for their day) advanced powertrain computers and much more powerful than C3 ECM found in 87-92 C/K's. The PCM can control TBI and 4L60E/80E as well as 700R4. It can also be used with manual gear boxes - all of this requires modifying EPROM. This is a long discussion (PCM mods) and better be done else where. There is a lot of information available - TGO, moates and elsewhere. Regarding Spedo. This is where it gets a bit tricky since 93-95 used electronic speedometers. The VSS produces 40 pulse per shaft revolution which gets passed to DRAC module. DRAC module has three outputs which feed into anti lock brake system computer, cruise control and PCM. To swap into 87 I would look into converting 4L60E VSS from electronic to mechanical drive with addition of inline VSS module to drive the PCM (assuming that there is no cruise control). This swap would require removal of reluctor ring pressed onto tail shaft and installation of drive gear to drive driven gear. You'll also need speedometer gear housing. For more info see link below. http://www.transmissioncenter.net/sp...n_______va.htm //RF
__________________
"The Beast" 1975 Chevrolet C20 longbed 350/700R4! with 3inch body lift Dual Flowmasters Super 40's! TBI retrofit completed (2007-07-29) ![]() New 383CID (+030) 08-304-8 9.5:1CR x36,005 (2012-12-17) |
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