First - differences between my challenger and my friends red 68 charger:

- both 383s with KB400 dome pistons
- my stealths (stock valve springs, better locks) vs his 906s - both shaved approx 0.045"
- my 220/226 with hughes lifters, degreed +4 deg vs 2330 cam
- my HP manifolds+ 2 1/4" stock exhaust and super turbos vs his tti headers + 2.5" exhaust and some magnaflows
- my dp4b vs his performer rpm
- my holley 770 street avenger vs his 800 thunder avs
- my MP electronic dizzy + noname blue box (this may be culprit of only 5k RPM) vs his mallory unilite (we both have blaster2 coils)
- my 3.55 + 26" bis ply vs his 3.23+ some 27" tyres
- my stock MP histall vert vs his hughes 2500
- both almsot stock 727s (my has cheetach VB)
- both PS/PB cars


My best times were at 50 deg F so good air but very bad traction so I definitely lost some time when taking off.

I guess I'm gonna first try chrome box cause I doubt It's valve float with such mild cam and quite quality lifters. Now we have deep winter so I cant try the car on the street.

Second, I'll check the fuel delivery at WOT. Gauge and fittings ordered at summit already.

Third, I'll have a new 2.5" exhaust made and stick to HP manifolds.

I'll refrain form tinkering with solid cam for now. You're all right that for a resto car it's not the best way.

I'll let you know what are the results when the snow is gone.