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04-02-2002, 07:53 PM
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#1 |
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Registered User
Join Date: Feb 2002
Location: Richmond MO,USA
Posts: 73
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TBI
I posted this on the 88-98' board and didn't get any replies,thought I would try it here.
I have a 94' GMC with a TBI 350 and I have access to a 91'454 TBI engine that is complete from the TBI to the oil pan.I was wondering if anyone can tell me if I need to change computers for this swap or maybe just chips?Any help would be appreciated.
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72' Camper Special,454,th350,np205,4.56 locker,dana44 with spool,13" of lift and 44" boggers.soon to be 23" with rear disc brakes |
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04-02-2002, 09:39 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Do you have a sniffer test in MO? If so, you better talk to an inspection station. An older engine in a newer truck might be a no go.
------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio |
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04-02-2002, 10:47 PM
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#3 |
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Registered User
Join Date: Nov 2001
Location: Concord, NC
Posts: 2,489
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I did a similar swap (5.7 to 7.4) TBI. I found from a detailed study of wiring diagrams, everything had to stay with the motor. did a lot of switching around ECM's and PROM's and even though it would run, it wouldn't run right until I had the ECM and PROM that came with that motor. In my opinion it would be best to switch the complete wiring harness and ECM with the motor
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04-03-2002, 01:07 AM
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#4 |
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Registered User
Join Date: Feb 2002
Location: Richmond MO,USA
Posts: 73
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Thanks ebfabman,I was afraid of that.I don't think our sniffer test is real picky,and I know a few inspectors.
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72' Camper Special,454,th350,np205,4.56 locker,dana44 with spool,13" of lift and 44" boggers.soon to be 23" with rear disc brakes |
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04-03-2002, 02:55 PM
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#5 |
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Registered User
Join Date: May 2000
Location: Alexandria, LA 71301
Posts: 1,451
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another option you may look into is superchips. they can tell you if your plan is feasible or costly but they can make it work.
------------------ keep fly'in lo 66 gto ragtop 389/400 72 blazer (wuza4by) 68 swb fleet 350/700 98 tahoe 2dr (daily ride)
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-02 avalanche (daily driver) -66 gto ragtop 389/400 (garage queen, hand-me-down from dad) -72 Tribute Trans Am (6.0LS/T56 6-speed) in progress -2003 YUKON (Wife's) -71 gmc swb fleet (current project, gonna shave everything, bags, stuff w/ 20's, gen III powertrain) -48 3100 SWB - 12/31/23 LONG TERM Project |
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