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Old 04-24-2014, 05:23 PM
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Timing a 4.3 Chevy V6 carbureted HEI

I've got a 1994 Chevy 4.3 V6 which I've converted to carburetion. I'm ready to set the timing, but getting conflcting thread options on how it should be done. I'm using a Skip White 65K HEI distributor on a 4bbl 1984 truck manifold. There are 2 marks on the timing pulley. Some threads say to line up the first line and others say the second, as I turn the pulley clockwise. I'm also not sure of where the #1 cyclinder should be on the distributor. I start to get compression as the first mark passes. If anyone has one of these setups, I would appreciate any help. Thanksd, Tom.
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Old 04-26-2014, 08:52 AM
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I remember how frustrated I was when I set timed my first distributor, but believe me it is something anyone can do. A simple Google search on "setting timing on a distributor" should give you more information then you need to do it properly. Also, I'm certain there is a crankshaft coalition wiki on setting up a distributor somewhere.
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Old 04-26-2014, 10:48 AM
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does it ping when driven? if not, keep advancing the timing until it does, then back it off 2 degrees and forget it.
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Old 04-26-2014, 11:19 AM
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The only way to know for sure the timing mark is right on the money now that the engine is assembled is to use a piston stop. They can be made cheaply and fairly easily with an old spark plug. Follow the articles on the crankshaft coalition page.

http://www.crankshaftcoalition.com/w...op_dead_center

The #1 on the distributor should be the terminal on the cap that is closest to pointing at the #1 cylinder, drivers side front of the engine. Same basic setting as a sbc with two less terminals.

It doesn't have to be that exact one but that is the one the factory used as #1. If the rotor doesn't line up with that terminal when at tdc you will need to pull the distributor and reinstall it in the correct spot.
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Old 04-26-2014, 06:52 PM
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4.3

on 89 timing mark is the one on the left and the one on the right points to another mark on timing cover lower down
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Old 04-26-2014, 07:46 PM
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Thanks to all for the help. I should be able to set it now. Tom.
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Old 04-27-2014, 10:50 AM
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Quote:
Originally Posted by T Evans View Post
I've got a 1994 Chevy 4.3 V6 which I've converted to carburetion. I'm ready to set the timing, but getting conflcting thread options on how it should be done. I'm using a Skip White 65K HEI distributor on a 4bbl 1984 truck manifold. There are 2 marks on the timing pulley. Some threads say to line up the first line and others say the second, as I turn the pulley clockwise. I'm also not sure of where the #1 cyclinder should be on the distributor. I start to get compression as the first mark passes. If anyone has one of these setups, I would appreciate any help. Thanksd, Tom.
I've got a 94' that was in a s10 Blazer. I had to replace the fuel injection spider assembly and when I tried to go by the marks on the balancer to drop in the dist. it about drove me nuts, because it kept backfiring when I tried to use either of the marks on the harmonic balancer.
I finally used a home made piston stop to find TDC. I placed a mark on the balancer with chalk, installed the dist. and it fired right up
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Old 04-30-2014, 01:18 PM
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. Yes, even buying a piston stop tool is like only about $5.95... handy in case the outer ring of the harmonic balancer has slipped a bit on the rubber... or putting timing marks where they are easier to see...
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Old 04-30-2014, 05:14 PM
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I have the front fenders off now, so I am able to see the top of the number one cylinder with a flashlight. With the timing mark aligned I,m right on TDC. I should be good to go now. Thanks, Tom
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