[63boxtop]

going to start running a 3:1 mix of 100LL/91 octane in my 557 but am not sure which way i need to adjust my timing and jetting for this different fuel set-up, here is what i currently have going, which has the plugs looking pretty good


4100 ft elevation

557 11:1 cr
BT aluminum heads ported and polished with ford exhaust port
Comp xr-292-r solid roller cam
victor intake
Pro-systems 1150 Dominator with a 1" supersucker carb spacer
88 on the primary and 96 on the secondary jets
32 degrees of total timing


Thanks in advance for the help as always

Rick

 

[crittersf1]

Let the time-slips tell you what it likes!

 

[63boxtop]

i was planning on doing that but was looking for an initial baseline to go off of



rick

 

[crittersf1]

If the plugs look good, start with what you got.