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02-17-2004, 05:09 PM | #1 |
Silverado Stew
Join Date: Jan 2004
Location: Ewing, MO
Posts: 184
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Carb to TBI conversion
Anybody go from Carb to TBI by stripping all the TBI components off a running truck? If so, how much trouble was it and what are some of the things to watch for. I have the intake, TB, ECM, wiring harness, and all sensors. I can't seem to sell them, so I'm going to try to put them to use. It's going on a '81 with a 350, it came off an '87 with a 350.
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- 1997 3/4 Ton Ext. Cab LB 4x4 6.5L Diesel - 1979 3/4 Ton Longbed 4x4 "Farm Truck" - 1984 1/2 Ton w/ '99 Vortec 350/700R4 2x4 FOR SALE |
02-17-2004, 06:04 PM | #2 |
Account Suspended
Join Date: Oct 2002
Location: Elkhart, IN
Posts: 6,399
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im going to do the same thing with my L31 Vortec longblock. the only thing you have to watch out for with your pre-87 block/heads is the angle of the center two intake bolts, which can easily be elongated for use with the pre 86 heads.
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02-17-2004, 06:44 PM | #3 |
You get what you pay for
Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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The intake bolt holes can be fixed, but this doesn't do anything for the mis alignment of the intake runners. Vortec heads are about 1/4" or so higher than regular heads. This will hurt performance a bunch.
Pretty shoddy way of doing something if you ask me. Buy the correct intake and do it right or leave it alone.
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Mike 1985 Chevy C-10 |
02-17-2004, 06:52 PM | #4 | |
Silverado Stew
Join Date: Jan 2004
Location: Ewing, MO
Posts: 184
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Quote:
__________________
- 1997 3/4 Ton Ext. Cab LB 4x4 6.5L Diesel - 1979 3/4 Ton Longbed 4x4 "Farm Truck" - 1984 1/2 Ton w/ '99 Vortec 350/700R4 2x4 FOR SALE |
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02-17-2004, 07:46 PM | #5 |
Registered User
Join Date: Feb 2001
Location: derby ks usa
Posts: 115
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i'm about to do the same swap on my 85 2wd and was hoping to get some better mileage. what kind of mileage gains do you guys think i should see??? its a bone stock small block with a 700 and a 2:73 rear i'm getting 10 currently........
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02-17-2004, 07:56 PM | #6 |
You get what you pay for
Join Date: Dec 1999
Location: Cherryville, NC
Posts: 4,798
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No, I said Vortec heads. I was replying to Jeremy. 87 heads are not Vortec.
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02-17-2004, 11:00 PM | #7 |
Account Suspended
Join Date: Oct 2002
Location: Elkhart, IN
Posts: 6,399
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Mike, i'm well aware of that which is why im running a Vortec carb intake with an adapter and TBI from a 454.
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