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Total timing on A460 head 538

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Total timing on A460 head 538 Empty Total timing on A460 head 538

Post  red6157 on December 21st 2018, 10:45 pm

Can anyone give a good starting point on total timing for a A460 head 538 ci 13.8 compression on alcohol I’m running this in a rear engine dragster elevation at 5400 ft I’ve been running 34 -36 degrees. Just wondering if i’m any where close Thank you
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Post  rmcomprandy on December 21st 2018, 11:48 pm

28/30 is about right on gasoline with those heads so, a little less with methanol would be near what it should be at near sea level. Maybe a bit more at a high altitude.


Last edited by rmcomprandy on December 21st 2018, 11:52 pm; edited 1 time in total

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Post  red6157 on December 21st 2018, 11:51 pm

thanks I’ll give it try
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Post  cool40 on December 22nd 2018, 2:35 am

I've had better results with less on my 526 A-head deal. It was happy with 26* on alky but your results may vary in that higher altitude. Cool
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Post  red6157 on December 22nd 2018, 2:24 pm

26 interesting. are you running a locked out distributor or crank trigger? What is your elevation. I’m in Montana so I have to wait until the snow goes away but anxious to try that. thank you
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Post  cool40 on December 22nd 2018, 8:32 pm

red6157 wrote:26 interesting. are you running a locked out distributor or crank trigger?  What is your elevation. I’m in Montana so I have to wait until the snow goes away but anxious to try that. thank you
I was running a locked distributor on it. We're around 1000' or so I think.
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