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Old 05-31-2004, 04:35 PM
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No power after points to HEI swap?

I just converted my points type distr. to HEI i also installed the advance curve kit and used the black springs included with the kit i set the timing @6 degrees BTC w/vaccumn advance disconnected.When i test drove it did not have the power it had before the swap the engine is a stock 400 SBC in a 68 Camaro what could i have done wrong?

I forgot to say i have not checked the total timing yet.What should it be?
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Old 05-31-2004, 04:37 PM
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Timing off?...too much or too little advance?....faulty HEI didtributer?....Bad coil?...pickup adjustment off?...any number of things.
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Old 05-31-2004, 04:59 PM
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I'm glad there is someone here that knows about "didtributers"
because I sure don't.lol...lol..............

And solved the problem too. lol.....lol.......
This dang new computer sometimes just starts typing and I can't stop it, sometimes it types the strangest things. lol...olol.....

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Old 05-31-2004, 05:16 PM
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hey....I just let my fingers do the walkin'.....or talkin'......
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Old 05-31-2004, 05:17 PM
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hei

Did you change the supply voltage to 12 volts????? If you used the stock wire you are only getting 6 volts to the hei.

keith
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Old 05-31-2004, 05:20 PM
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Re: hei

Quote:
Originally posted by k-star
Did you change the supply voltage to 12 volts????? If you used the stock wire you are only getting 6 volts to the hei.

keith
Good point....actually it's 7 volts, but who's counting.
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Old 05-31-2004, 05:22 PM
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Re: No power after points to HEI swap?

Quote:
Originally posted by shockers69
I just converted my points type distr. to HEI i also installed the advance curve kit and used the black springs included with the kit i set the timing @6 degrees BTC w/vaccumn advance disconnected.When i test drove it did not have the power it had before the swap the engine is a stock 400 SBC in a 68 Camaro what could i have done wrong?

I forgot to say i have not checked the total timing yet.What should it be?
Couple of points to be made here.

Did you remove the ballast resistor or resistor wire and use a new wire giving a full 12 volts to the HEI? Did you also remove the wire that goes from the starter solenoid to the original coil?

Sorry someone got to this before I finished my two finger typing.

I would not have put the advance curve kit in the distributor unless I found that it was required AFTER I had adjusted both the initial and the Total Mechanical timing.

The springs that you changed will alter how soon (or late) the full mechanical timing is able to come in.

Put the original springs back in the HEI. Set your initial timing to 10 degrees BTDC with the vacuum line dis-connected and plugged. Re-connect the vacuum hose AFTER you have set the timing. You may have to adjust your curb idle down some at this point. Test drive the vehicle.

When you are able to check the Total Mechanical timing; disconnect the vacuum hose and plug it. Watch the timing light as the RPM's increase. The timing should stop climbing at some point between 2500-3000 RPM. If it continues to climb you need to go with lighter springs and / or weights. You want the full mechanical advance all in by the RPM range stated above. Depending on the combo you are running you may also need more initial advance than what I suggested you start out with. Re-connect the vacuum hose after you have set the timing.
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Old 06-01-2004, 03:58 PM
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You also need to re-gap your plugs
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Old 03-15-2005, 02:15 PM
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Hello,
I need to run wire for my new HEI for my 69 Wagon. What should I connect the new wire to so I can get 12 volts to the HEI?

Thanks

Trent
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Old 03-15-2005, 02:21 PM
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if its not missing you've more than likely got proper power. My guess is that you've got a slow curve in the HEI and haven't messed with the springs or weights yet, and they need adjustment-

K
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Old 03-15-2005, 06:23 PM
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i also changed my springs and put new weights in my hei. im not getting the power it seems like i had before also.i used a mr gastket kit.darn, i forget which spring i used,but i have the black ones left over.is it possible it will run bad if they are installed upside down?(weights)
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Old 03-15-2005, 06:47 PM
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First make sure you have 12 volts then try other spring combos, if that doesnt work buy a MSD HEI coil.
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Old 03-15-2005, 06:54 PM
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Hello,

I need to run a new wire for my HEI so that I can get 12 volts to it. What should I connect the wire to so that I can still shut it off when I turn the ignition off?

Thanks

TRent
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Old 03-15-2005, 07:17 PM
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Break out the voltmeter and find a switched 12 volt source in the ignition wiring harness or fuse box.
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Old 03-16-2005, 09:31 AM
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Quote:
Originally Posted by poncho62
Timing off?...too much or too little advance?....faulty HEI didtributer?....Bad coil?...pickup adjustment off?...any number of things.

I agree with the above. You have F something up. GM HEI is the best upgrade you can do on any GM engine
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