Appreciate some input on spark plug reading
The plugs are on my avatar Demon - 408, 10.5 CR, 251/[email protected] SFT, 850 DP, Super Victor, MSD 6, Autolite 3924 plugs, 5000 stall conv, 4.10 axle, footbrake car. Engine runs ~34 degrees total timing and given the flash stall of 5000 rpm, it's certainly all in when the car leaves! Best so far is 11.10 @ 119+. Hopefully that covers the basics.
New to Florida and running at the Gainesville track. Haven't really jetted it any differently than back in Michigan but thought I'd ask for some experienced plug readers input. To me, the car can feel a bit sluggish pulling on the big end and I'm wondering if a couple degrees more timing might be worth a try as jetting (at least in Michigan) did not impact the mph at all. Note this "sluggish" feeling on the big end has not changed since moving south.
Pulled the plugs and they all look basically the same. The ground strap is clean until about 1/8" from where it connects to the body. I cannot really see any coloring on the insulator but I have not had a plug cut (but I doubt that would change the reading). This is all consistent from my experiences back in Michigan.
Here's some shots of the plugs. Tried to show the ground strap coloring but photos are a bit tricky. To me, they look just about right but thought I'd ask.
#1:
#3:
I could post others but they look identical - no difference from front to back or LH versus RH side of engine.
Thx for any pearls of wisdom!! (And nope... not moving back north!! Lol)
The plugs are on my avatar Demon - 408, 10.5 CR, 251/[email protected] SFT, 850 DP, Super Victor, MSD 6, Autolite 3924 plugs, 5000 stall conv, 4.10 axle, footbrake car. Engine runs ~34 degrees total timing and given the flash stall of 5000 rpm, it's certainly all in when the car leaves! Best so far is 11.10 @ 119+. Hopefully that covers the basics.
New to Florida and running at the Gainesville track. Haven't really jetted it any differently than back in Michigan but thought I'd ask for some experienced plug readers input. To me, the car can feel a bit sluggish pulling on the big end and I'm wondering if a couple degrees more timing might be worth a try as jetting (at least in Michigan) did not impact the mph at all. Note this "sluggish" feeling on the big end has not changed since moving south.
Pulled the plugs and they all look basically the same. The ground strap is clean until about 1/8" from where it connects to the body. I cannot really see any coloring on the insulator but I have not had a plug cut (but I doubt that would change the reading). This is all consistent from my experiences back in Michigan.
Here's some shots of the plugs. Tried to show the ground strap coloring but photos are a bit tricky. To me, they look just about right but thought I'd ask.
#1:
#3:
I could post others but they look identical - no difference from front to back or LH versus RH side of engine.
Thx for any pearls of wisdom!! (And nope... not moving back north!! Lol)
