PDA

View Full Version : Thoughts on Trap Speed



jdefina
11-02-2010, 06:52 PM
I am running a Lincoln Mark VII with a 427 ci Windsor, Vortech blower making
approx 15 lbs of boost with all the good add ons.
Trans is a Silverfox AOD non-lock with a 2800 stall Precision Industries converter.
Rear has 3:73 gears. Have not been to the track with this new combo Due to
roll bar requirements but hope to get there in the spring.

My question...is there a loss factor that can be applied to get an approximate
trap speed. Various sites calculate with no loss (1:1) at 6500 rpm 26 inch tire
3:73 gears ...134 mph.

Previous engine 347 with a blower got 120mph @ 11.3 with a lockup AOD
and the same stall and same tire.

I am just wondering where those 3:73 are going to make the engine run out of R's.

SilverFox
11-03-2010, 08:42 AM
to much math for me this morning.

Fatstang
11-05-2010, 07:41 AM
run a 27 or 28" tire to be sure

cmack.306
11-05-2010, 08:53 PM
When I changed my aod from lock-up to non-lock one piece shaft. I lost
9 mph on the top end at the same rpm. Both converters were
3000 Edge Racing, a taller tire may be a good idea

jdefina
11-06-2010, 06:31 PM
When I changed my aod from lock-up to non-lock one piece shaft. I lost
9 mph on the top end at the same rpm. Both converters were
3000 Edge Racing, a taller tire may be a good idea

Hopefully your et dropped...Thats a significant loss of MPH

cmack.306
11-06-2010, 06:35 PM
the car did pick-up 2 tenths