I'm replacing an old point type distributor with an HEI Dist.on a 69 Chevy C/10 Truck. How do i wire it in

Question

I need wiring instructions for the new High Energy Ignition distributor. I am installing it into a 1969 Chevy C/10 pickup truck with a 350 Eng. Is there anything i should know about the wiring and my spark plug gap was .035 will i be changing the gap to .040 or .060 and do I need to run my 12 volt power wire through a ballast resistor before I connect it to the distributor

Answer 1

SIMPLEST option------->
use a test light and locate a fuse in the fuse block that is "Hot" only when the key is in the "Run" and "Start" positions. It should not be "Hot" in the "Acc" position. There used to be two connectors on the old fuse blocks that would work this way.
Run a # 12 wire from the terminal ("Hot" side of the fuse, not the fused side) to the "+" terminal of the HEI dist.
This distributor requires full battery and charging voltage. Use NO resistor.
When the HEI first came out in the early '70s, the plug gap was recommended from .045" all the way to .80", and there were fouling issues. G.M. came out with a TSB to run the plugs at .035", and ultimately recommended .045" for most applications.

Good Luck

Answer 2

Checking for TDC on compression: Take the plug out of No.a million and carry the top of your finger over the spark plug hollow (or have somebody else do it) to form a seal. With the ignition off, manually turn the motor over until the air pushes previous the finger and makes a valid -- it is your compression stroke. to discover TDC, use a small screwdriver and insert it into the plug hollow. Now, as you slowly turn the motor over some greater, the screwdriver will start to place flat (do no longer difficulty, there is lots of room in there so which you will no longer do any injury). while this is laying on this is ingredient you have TDC. verify to work out that the strains on the harmonic balancer line up the the timing classes. Now, take the cap off the distributor: the rotor could be pointing in the direction of the mark on the lip of the distributor. If this isn't any longer, you're able to re-align it. no rely if it is then its no longer your timing. To set the distributor: carry the distributor (with cap off) area way out until you experience it sparkling the gears on the cam shaft. See that the vaccuum advance is pointing to the front of the motor and that the rotor is pointing on the mark on the lip and then insert the distributor, completely. Now, as you re-insert it, this is going to turn as a results of way the gears are made (yet you have already considered this). Mark the area the rotor is pointing at with some chalk or something (even a niche of grease will do). degree the area the rotor grew to become and mark out that individual same distance in the different course. carry the distributor out, back; turn the rotor so as that it factors on the 2nd mark and reinsert the distributor. you may could desire to jiggle the rotor a sprint to get the gears to mesh yet no longer too plenty. while the distributor is completely inserted this is going to likely be pointing on the mark on the lip (TDC). Bolt the distributor down, replace the cap and spark plug (dont forget the lead). Recheck to work out you have the main remarkable firing order -- this is on the manifold -- and initiate your truck. If it does not initiate, this is a few thing else. As for the valve adjustment; they could desire to be hydraulic so which you basically flow the rod up and down as you tighten the nut. while there is not any stream in the rod, tighten yet another a million/4 to a million/2 turn and that they are set. .

Answer 3

there should be red and yellow-or red and brown wires goin to your points style seperate coil-on the hei cap it should be marked with 2-3 wire inputs plus your plug that goes from your cap to your distributer-really all you need is the red power wire to go where it says 12v+-dont plug anything into the place marked tach-thats for a tachometer-not another power source-if it has a placed mark ground or 12v- thats where you hook the yellow or brown wire-but most are self grounded and just have a tach and 12v+ input-hope this helps ya-also just have autozone look up the gap on like a 85 chevy truck-these have hei and will give you the proper gap-i think when i changed mine it went up to 43 or 45 gap

Answer 4

If you had an external module cut the power wire for it (It should be the biggest one) and use that to power the dizzy. If you have a tach use the NEG wire from your coil and connect it to the TACH terminal of the HEI.

Other wise any 12V when the key to ON wire will do.

Answer 5

try 45 on the gap and see how it works and no don't use a resistor thats only for points.