Author Topic: 455 with HEI timing  (Read 213 times)

welderguy1

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455 with HEI timing
« on: September 17, 2018, 04:14:22 PM »
Just looking for some input on my 455 olds. 70 block,e heads(iron), hei distributor. My question is in regards to timing. I presently have 18 initial with ported line to distributor plugged.35 degrees at 3500 rpm with mechanical in. 56-57 degrees all in with vacuum line attached. Do I have to much vacuum advance? Should I decrease initial and increase mechanical. I feel the motor has much more to offer up to the tire gods.
Thanks

455 with HEI timing
« on: September 17, 2018, 04:14:22 PM »
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