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Old 08-10-2009, 11:29 AM   #11
rfmaster
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Join Date: Oct 2003
Location: OC CA
Posts: 1,374
Re: Tbi swap build thread

Quote:
Originally Posted by cjracing15 View Post
You can go back to the first page of this thread and look on post # 8 and I listed all the wires by color and what pin that it goes to. It should be the same with the harness you have with maybe a few extra wires throwed in. Then you can look on page #3 of this thread starting with post # 65 and see what me and RF did as far as routing the spaghetti of wires that you will have left over. You need to get real familiar with a soldering iorn . Later
Yes, soldering iron skills are a definite plus to have, but for the most part a professional grade crimping tool and barrel wire crimps are just enough to do the job. My preference is to solder and double shrink. Note, that the B-Body bulkhead pass though header contains AC vacuum lines and ECM harness. It's a square looking bracket - see my photos. Needless to say making a square opening in the firewall is tough. I used a 2-1/4 punch (52mm) and standard OE rubber bushing to pass ECM wires since there was none in '75. In your case you should have CCC harness that will have to come out, but you can save OE rubber bushing by gently removing CCC harness wires and replacing them with donor wires. For ease of re-installation I just cut through rubber grommet to allow ease of wire installation. Then I used vulcanizing rubber (windshield) sealant to make it whole again - not very clean, but it good enough.

//RF
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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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