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Crippled Dyno Pull

 
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osmiumfoot
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PostPosted: Mon Mar 08, 2004 2:52 pm    Post subject: Crippled Dyno Pull Reply with quote

Put the Camaro on the Dynojet last Monday. It had been acting goofy at idle, fluctuating from 1k down to 500 and trying to die, so I'd give it a little throttle tap then it would lump at 750-800 for awhile, then climb back to 1 or 1.2k for awhile, then back down. I finally disconnected the vacuum advance and the problem went away, so I left it disconnected, reset the initial and went to the Dynojet. Best pull was 340 hp/340 ft-lb with the plug pulled at 6k, but the hp curve was still heading up. Fuel-air map showed about 13.6. Went home and rechecked the timing and I had a total of 20 degrees at 3k with initial at 6!! I think I'm losing my mind, I swear I set the initial at 12. Anyhow, I now have it set at 16 initial and 34 total. Without paying another 100 bucks for a dyno run, any guesses on the improvement?
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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Mon Mar 08, 2004 3:57 pm    Post subject: Reply with quote

Is this with the new AFR's on the 406?

If so I'll say you've got 40 HP or more.
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Hanz
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2003 Dodge Ram

PostPosted: Mon Mar 08, 2004 5:08 pm    Post subject: Re: Crippled Dyno Pull Reply with quote

osmiumfoot wrote:
Without paying another 100 bucks for a dyno run, any guesses on the improvement?


For only 30 bucks, I'll guess 60! Wink

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osmiumfoot
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PostPosted: Mon Mar 08, 2004 6:31 pm    Post subject: Reply with quote

smokemup wrote:
Is this with the new AFR's on the 406?

If so I'll say you've got 40 HP or more.


Brand spankin' new!
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osmiumfoot
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PostPosted: Mon Mar 08, 2004 6:33 pm    Post subject: Re: Crippled Dyno Pull Reply with quote

Hanz wrote:
osmiumfoot wrote:
Without paying another 100 bucks for a dyno run, any guesses on the improvement?


For only 30 bucks, I'll guess 60! Wink


Geez Hanz, you offer cheap dyno services. Send me a bill. Very Happy
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SMOKEmUP
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1979 Chevrolet Camaro

PostPosted: Tue Mar 09, 2004 1:22 am    Post subject: Reply with quote

I would think your set up should dyno at least 400 RWHP.

When are you taking it to the track?
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jeep_406
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1972 Chevrolet Nova

PostPosted: Tue Mar 09, 2004 10:46 am    Post subject: IT'S ABOUT TIMING!!! Reply with quote

You mentioned you checked your timing at 3K. Was it all in at 3K. I'm wondering if you have an advance problem in the distributor.
Maybe I'm having a brain fart but 34 total with the initial set at 16 seems out of wack.
I thought that was a great line from Hanz. Laughing Did you ever send him the 30 bucks?
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osmiumfoot
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PostPosted: Tue Mar 09, 2004 11:39 am    Post subject: Reply with quote

The timing seems goofy to me too. This dizzy used to live in a 350 and with the initial set at 12 would advance to 36 at 2.8k. Now it checked once at 8 initial with 20 total w/o vacuum advance, then 16 initial with 34 total w/o vacuum. One time it advances 12 and now it advances 18. Me thinks something is fishy, so its coming out. We don't have a track schedule yet but it usually opens the first week of April. Hanz hasn't got his 30 bucks yet because the ink isn't dry. Cheers
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