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#4
03-10-2026, 05:07 PM
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I believe that you can make a standard wire harness work with RA manifolds, but if you're buying a new harness, buy the one for RA manifolds (RAIII/RAIV).
The standard engine harness has the starter wires cut and wrapped to route through a tube mounted to the cylinder head in front of the rear most exhaust port on the drivers side; The RA harness has the starter wires cut and wrapped to run down along the front of the engine, along the oil pan lip to the starter solenoid. When I rebuilt my harness (used donor original 1970 f/s Pontiac harness) I modified it to route properly (the engine/starter wiring was a mess that I inherited when I got my car).
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
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