back to old timing issue.

[jasonroman]

at around 800 rpm, might have been neer the 12 mark.
but then when i shut truck off, i end up with lots of pre ignition.
prior to me messing with things today, think i was around 24-28 on timing light.

took off distributor to change the oil pressure sending uint, to see if i have issues there.

then when i put it back i figured i was not exactley where i was before. so i played with timing and my rpm. just installed a tach last week.
timing light says 800 tach says 7iish....

at one point i had it at the 12 ish number i thought i read somewhere...starting point. around 12?


so when i was around the 12 ish area, and at around 760 rpm.
had a bit of fire under hood from time to time and when id shut truck off, lots of over run/ pre ignition i think its called.

id like to know what i need to do to dial in.
my adjustments came from moving distributor in different directions and getting different responses.

again, i had an 82 with a 350, intake carb, headers....
id get on gas and lay wheels for a good distance.

this 85... if i get on it too hard, truck will shut off.....
and only when i hit a corner and get on it do i notice a bit of reaction
but i also hear more noise than id like coming from the rear end.


so lots off bla bla bla on my end.


any of you guys able to help me with this??

please let me know if i need to move this to another area.

thanks for any help.