73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 76CrewCab4x4 on September 14, 2007, 12:38:29 am
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I have a 76 Crew Cab 4x4 with 350 c.i Engine, Edelbrock 600 carb., Th 350 Transmission, NP203 Transfer Case. Fuel consumption is around 10 mpg at it's best. I've owned the truck since 1988 and am in the process of improving it's looks and performance. I've thought about changing over to a TBI system. I owned a 88 Chevy C10 with a 305 c.i. and a TBI which performed phenomenal on fuel and power. I have at my disposal the ECM and wiring (everything that under the dash, from an 88 Suburban with a 350 c.i. I know I need a lot more items but, would having this ECM and wiring be advantageous in obtaining? Has anyone done a conversion over to a TBI and is happy with the results? If I can increase my fuel economy by just 2 mpg, that's a 20% increase! Like going from 20 mpg to 24 mpg. What have be the mpg results from the conversion? Any and all input would be appreciated.
Tom
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You will reap all of the benefits of EFI. Easy starting, better fuel economy and better stoichiometry. It's not that hard to do. Swap the intake and TBI. Install the EFI distributor, the sensors, you'll need an O2 bung, the fuel pump, harness ECM etc and you'll have to cut a hole in the firewall. A good investment if you are gonna keep the truck!
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Thanks! I do plan on keeping the truck. Kept it this long, might as well keep it untill one of us can no longer be useful.
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I too believe it is well worth the effort especially if you have all the donor pieces at your fingertips. The 87-up TBI heads are the new centerbolt version, it my be necessary to modify the intake to fit on an older style head.
I am in the process of converting my 78 Jimmy to TPI.
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hi discovered a wrecked 1995 1/2ton silverado with EFI Wood this fit my GMC, just a complet swap work EFI parts.
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stoichiometry.
What!!!???lol
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i was thinking the same thing oldwhity ;D
stoi·chi·om·e·try [stòykee ómmətree]
n
1. branch of chemistry: the branch of chemistry concerned with measuring the proportions of elements that combine when chemical reactions take place
2. measure: a measure of the relative proportions of the chemical elements that take part in a chemical reaction
[Mid-19th century. Coined from Greek stoikheion “element” on the model of German Stöchiometrie .]
Microsoft® Encarta® Reference Library 2004. © 1993-2003 Microsoft Corporation. All rights reserved.
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stoichiometry.
What!!!???lol
means better air, fuel ratio
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Where's that thread about naming trucks....I think I just found the name of my next truck. :D
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That's too funny! :D So truck run gooder. Me get it! lol
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(http://www.delbridge.net/trucc18aa.jpg)
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LOL did you see the date on that post? A stoichiometric air fuel ratio is ideal.
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sept. 07, wow, didn't realize that.
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It also means longer engine life due to less fuel washdown of the cylinders.
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I mean i discovered a wrecked 1995 1/2ton silverado with EFI and my 1986 350 stock motor has a carburettor on it but i Wood like Fuel Injection on it so wood the parts fit my GMC, just a bolt in job no modifications to any parts.
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They will technically fit, but the intake is different, BUT just get the heads with it, they are better than those on the 86.
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hi discovered a wrecked 1995 1/2ton silverado with EFI Wood this fit my GMC, just a complet swap work EFI parts.
I mean i discovered a wrecked 1995 1/2ton silverado with EFI and my 1986 350 stock motor has a carburettor on it but i Wood like Fuel Injection on it so wood the parts fit my GMC, just a bolt in job no modifications to any parts.
How much wood would a woodchuck chuck, if a woodchuck could chuck wood? ;)
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lol
Your biggest difference is going to be the wiring harness. An 87-91 (R-V) Truck, Blazer or Suburban would be ideal.
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lol
Your biggest difference is going to be the wiring harness. An 87-91 (R-V) Truck, Blazer or Suburban would be ideal.
They will technically fit, but the intake is different, BUT just get the heads with it, they are better than those on the 86.
that is problem one haw different is the intake. two the parts are a good price but it will work fine right? (wiring harness) I'm new to this idea so it help a lot. he likes carburettor not EFI, but I'm a bag of conductions. have you looked at the hipper link. thanks for helping me and others
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lol
Your biggest difference is going to be the wiring harness. An 87-91 (R-V) Truck, Blazer or Suburban would be ideal.
They will technically fit, but the intake is different, BUT just get the heads with it, they are better than those on the 86.
that is problem one haw different is the intake. two the parts are a good price but it will work fine right? (wiring harness) I'm new to this idea so it help a lot. he likes carburettor not EFI, but I'm a bag of conductions. have you looked at the hipper link. thanks for helping me and others
Say what? ???
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I have no idea what you are saying but if you have a running donor, put everything attached to it and put it in your truck. That is the simplest answer. A SBC is an SBC up to the LS motors.
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I have no idea what you are saying but if you have a running donor, put everything attached to it and put it in your truck. That is the simplest answer. A SBC is an SBC up to the LS motors.))
Hey, he offered the truck to me today, so seems i might get it soon. What makes a SBC and a LS different? What do the initials stand for? I cannot see the difference in the name. Thank you for helping me. I am learning a lot. I only know the concepts of fuel injection. I don't know how to make it work. Can you please give me a step by step instruction on how to make this work, since I don't know?
here is your answer VileZambonie Say what? ??? my spelling sucks! I'm a bag of contradictions. Sometimes I end up having to change my ways, like this time. The truck was supposed to stay a carburator, but I ended up changing my mind. My research concluded that this is just a little better.
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SBC = Small Block Chevy, basically anything up to 1999 can be swapped around for large parts.
The LS series replaced it in 1999 and it used exclusively from that point on mainline vehicles.
If you have a running fuel injected motor, remove it and everything attached (EVERYTHING, wiring, connectors, hoses etc) and place it in your current vehicle. The only other difference is fuel supply which requires an EFI fuel sending unit with the appropriate in tank electric pump.