Mopar .590 cam

[Budnicks]

Disclaimer;
I'm just spit-balling here, trying to help or ask pertinent questions
so others/knowledgable can chime in & help too,
Please don't take offence to my comments or questions...

What ignition & timing ?
Was that old cam installed advanced, straight up or retarded ?
{more initial ignition timing or an advanced camshaft can help down low (some), but
will generally hurt on the big end, but a retarded ignition timing or camshaft for your specific engine combo,
will wake up more on the big end/thru the traps, especially on a 1/8 mile pass}

What RPM are you leaving the line at ? {on the trans-brake I assume @ 4200 rpm}

What rear shocks ?

What type of rear suspension ?

What size rear tires ?

How much front end travel ?
{your fenders vs the tires/suspension unloaded/travel, I see you said it lifts the tires 8"s}

Slicks {are they Bias or Radial} or running Drag Radials ?

What are you going thru the traps MPH/speed & RPM ?

sorry if it's a bit redundant...

Generally speaking;
Early tire spin or unloading the chassis after launch/spinning the tires
in the 1st 330ft, will "generally" show as higher MPH usually vs the ET #'s
the shocks, suspension or settings could have a bunch to do with it too...

Improve 60 ft times the ET will pick up a bit...
{Obviously, but significantly the 1st 330ft is the most important for real ET changes,
ET is the chassis/engine combo #'s working, basically MPH is HP}

When the car leaves ?,
does the front end stay up & on the rear tires when pulling the front end
going out to near 60 ft {or past}, than settle down easily ?
{Do you have any video you can show us ?}
or does it drop down fast & unload the rear tires ?
Possibly ?
getting tire spin, hense a bad 60ft for that combo,
than using up/wasted all the bottom end torque,
basically making you run out of gear/engine capabilities on the top end ?
MAYBE ?
{5.13:1 is a ton of gear for a wedge engine, if only spinning 6500 RPM, leaving @ 4200 if you don't have a
30"+ 12"+ wide tire, even in the 1/8th mile if your tune/chassis/shocks etc. isn't right}

Where does your camshaft card say it should make the most Peak Torque
& at what RPM range ?
It maybe just falling on it's face on the big end too,
but the 60 ft should be better !!

Anyway Good Luck, with your new build, happy Moparing

 

[moparmarkk]

i don' know,thru the traps its at 6400 rpm, front end now has alum. strut rods and rod ends tires don't spin

 

[moparmarkk]

36 degrees timing,msd 6al msd dist. goodyear slicks 8psi, front end drop fast,but no tire spin, 2 degree nose down pinon strange rear shocks adj. coil for 200 lbs. leave the line at 3800-4000 rpm,front shocks are CE 90-10 ,it pulls but like after 100 ft, a friend said it sounds like a two stoke in the first 200 ft.

 

[deaks]

I found the CE 90/10's to be too stiff on my car, I use the calvert 90/10's and Afco doubles on the rear, is the front binding at all ? as said you car should be running around 1.50 60 ft times, my old 3800#challenger ran 11.83 at 113 best and that would 60ft 1.59-62 with a 4200 converter. What are the rest of your increments ?