Chassis Tuning

street car with a 600 lift roller?
View attachment 1715740572
with out a cam change all you can do is work on carb & cam timing
This car needs to cross at6400 rpm
our over cammed /under stalled cars always went more consistent with less burnout
Your new shorter tires will hook fine
I'm confused...what's wrong with a "street car with a 600 lift roller"?

My street/race car has healthy solid flat tappet cam with 264/268° @ 0.05, 0.621/0.632 lift in it...I drive it all over town...I even drive to the race track, lay down low 10 second passes and drive home again.

The OP really just needs more converter (like an 8" with 4500+ stall)