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09-07-2009, 10:29 PM | #1 |
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Location: Safford AZ
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Vortec Swap
I am going to swap my Vortec 5.7 out of my 2000 into my 69. Has anyone else done this and if so how well did you get the wire harness tucked up to make it clean? What about the A/C components? Also I am going to swap out the auto 4l80 it has with a manual. Will I have any problems with the ecm not seeing the trans? If so what is the fix?
I am interested in seeing some pictures of this swap too. Thanks
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1967 Chevy c20 1969 Chevy K20 1972 Chevy K5, LS Swap 1972 Chevy C10 1985 Jeep Cherokee SBC, sm465, np205 with 1 tons 2012 Jeep JK Last edited by Dchamber; 09-07-2009 at 10:30 PM. |
09-07-2009, 10:37 PM | #2 |
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Re: Vortec Swap
I put a vortec motor in my 71 but I didnt end up using the fuel injection. I get 18-20 MPG with a carb and a buddy of mine gets 13-15 with his fuel injected vortec.
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1971 GMC 1972 Small Blocked DATSUN 240Z Dads old car |
09-07-2009, 10:42 PM | #3 |
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Re: Vortec Swap
Thats good to know. I will look into that option too.
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1967 Chevy c20 1969 Chevy K20 1972 Chevy K5, LS Swap 1972 Chevy C10 1985 Jeep Cherokee SBC, sm465, np205 with 1 tons 2012 Jeep JK |
09-08-2009, 06:59 PM | #4 |
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Re: Vortec Swap
What about power? Does it still get the same hp and torque?
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1967 Chevy c20 1969 Chevy K20 1972 Chevy K5, LS Swap 1972 Chevy C10 1985 Jeep Cherokee SBC, sm465, np205 with 1 tons 2012 Jeep JK |
09-08-2009, 08:56 PM | #5 |
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Re: Vortec Swap
If tunned the right way it will run very strong.
My set up is: 1998 vortec block .040 over, vortec heads with screw in studs, comp cams valve springs, comp 1.5 roller rockers, edelbrock air gap vortec intake, comp cam Xtreme Energy XR676HR roller cam, Holley 750cfm 4-bbl Carburetor, holley blue fuel pump, and accel ignition. I had a 700R4 trans behind it at first and thats when it was getting the best MPG's. When I put a TH350 behind it MPG's dropped but not bad since the motor was built to run.
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1971 GMC 1972 Small Blocked DATSUN 240Z Dads old car |
09-07-2009, 11:26 PM | #6 |
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Re: Vortec Swap
Still have to run an electric fuel pump though as there are no provisions for a mechanical pump.
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'72 cheyenne super step, '05 long bed gmc |
09-08-2009, 11:34 AM | #7 |
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Re: Vortec Swap
True, But it beats the hell out of running fuel injection.
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1971 GMC 1972 Small Blocked DATSUN 240Z Dads old car |
09-08-2009, 04:04 PM | #8 |
Try spinnin 4 rear tars
Join Date: Sep 2003
Location: Salt Lake City, Utah
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Re: Vortec Swap
The computer will throw the check engine light if it isn't hooked to the trans. No biggie, as it will still run the truck. If I were going to have OBD2 in mine, I would dedicate a CEL, but then yours will always be lit. The thing to do would be to have the computer flashed to a manual trans ECM, or junkyard one.
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SWEET7T 1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB |
09-08-2009, 04:12 PM | #9 |
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Re: Vortec Swap
I will be installing a light somewhere in the dash. Is there anywhere else I can send the ecm to get flashed other then the dealer?
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1967 Chevy c20 1969 Chevy K20 1972 Chevy K5, LS Swap 1972 Chevy C10 1985 Jeep Cherokee SBC, sm465, np205 with 1 tons 2012 Jeep JK |
09-09-2009, 10:05 AM | #10 | |
Try spinnin 4 rear tars
Join Date: Sep 2003
Location: Salt Lake City, Utah
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Re: Vortec Swap
Quote:
Wester's A buddy of mine just had his ecm tuned for a FI 383 he just finished for his '97. I will try to get ahold of him to see who he had do his...
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SWEET7T 1970 C10, 2wd, LB, 307/TH350/3.08. PS, PB Last edited by SWEET7T; 09-09-2009 at 10:05 AM. |
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09-08-2009, 07:26 PM | #11 |
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Location: Amarillo, Tx
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Re: Vortec Swap
you can send the ecm to www.speartech.com
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