hi, whats a real would finish line rpm 1/4 mile, 4:56 29" 30" tire 727 stk ratio...? cars not running yet
Impossible to know without knowing weight@the line and estimated fwhp and then you have verter slip to calculate in.
As an example, 600fwhp in a 3500@the line car with 4.56 with a 29" tyre and a good hook would look something like this>
60 Foot E.T. : 1.46 Seconds
1/8 Mile E.T. : 6.62 Seconds
1/8 Mile Trap Speed : 102.74 MPH
1/4 Mile E.T. : 10.49 Seconds
1/4 Mile Trap Speed : 128 MPH
1/4 Mile Trap RPM : 6,757 RPM+ 8% slip?=7297
with a 30" tyre
60 Foot E.T. : 1.46 Seconds
1/8 Mile E.T. : 6.62 Seconds
1/8 Mile Trap Speed : 102.74 MPH
1/4 Mile E.T. : 10.49 Seconds
1/4 Mile Trap Speed : 128 MPH
1/4 Mile Trap RPM : 6,532 RPM+8%=7054
so your looking on average around 250>300rpm difference from a 29>30" tyre across a wide range of hp/weight combo's.
And that works the same for our RR at 3800lbs with 4.10's and 675fwhp with 29's going to 30's, with an 11.39 SLR.
And similar for my old Cuda with 660fwhp@3300lbs with a 32" tyre and 4.88's and then with a 31" tyre around 260rpm more@the stripe.