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Old 01-01-2011, 05:57 PM
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406 chevy

im looking for a little bit of help from more experienced engine builder, on ignition system for a 406 chevy that i have put together, i was told to run the magneto type instead of hei, i have a '78 400 2 bolt main with trick flow heads and hydraulic lifters, looking for about 600hp any suggestions?


Last edited by nighttrain406; 01-01-2011 at 05:58 PM. Reason: spelling
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Old 01-01-2011, 06:32 PM
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Hey Nighttrain, first of all WELCOME and secondly, I think you will get more responses on your electrical question if you post it in the Electrical Thread. Most of the viewers don't really check this Intro Thread that much. Good Luck with your problem.
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Old 01-01-2011, 08:36 PM
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Google "Tunnel Ram 406"
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He's is in electrical thread
BTW, It does not matter what igniton system is. A spark is a spark. The only area you should check is advance curve setup and if it's vacuum or full mechanical advance. Is this for racing or street strip setup?
For a 600 horse 406 you may have little manifold vacuum. I would use full mechincal advance. Set it 15*at idle and by the your at 2800 to 3000 RPM it should be round 36* to 38*. You can use an HEI distributor. My tunnel ram 406 uses an MSD setup with full mechanical advance and works fine.

Last edited by lg1969; 01-01-2011 at 08:41 PM.
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Old 01-01-2011, 11:54 PM
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Is this a rail or drag only vehicle? A mag isn't a street-friendly ignition system, and is used mainly where weight is a big factor and there's no battery on board.

Why would you want to try to make 600 HP w/a 400 SBC w/a hydraulic valve train?
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Old 01-08-2011, 09:29 AM
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Thank you for the welcome WR, the engine was built for a S10 that was totally stripped, fuel cell mounted in the bed and battery up underneath the rear of the bed. I was not happy with the truck so i decided to put it in my 81 Z28, mostly for strip for midnight madness at gateway dragstrip and occasional cruise nights with the family. I appreciate the suggestions. I went totally off of suggestions from Triple R Performance for a 406, trick flow twisted wedge heads the ROLLER ROCKERS , lunati cam, they machined my block telling me that the 78 block had more nickle in it making it stronger and that it would hold whatever i wanted to put in it. Gene of Genes Transmissions from Quincy, IL is building my 400 transmission and he as well stated that i have a great start to a good setup. Im open for suggestions if i dont have the right set up
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