Talking to a local builder, I'm stalling at 1400 now, he put a 2800 in a 99 360 R/T dakota, I'm thinking to put a 21-2400 in mine because I'm going to be running a very short slick (22.4"/70" rollout) with the 4.10's.

I'm going to get the convertor built next week, replace my upper control arm bushings next weekend, and order the powertrax No-slip the week after and install it that weekend. So the next time I hit the track, it should be with a sh!tload of torque equally distributed between both 29" tires. Then it'll be on to the methanol injection and custom PCM timing map. The slicks are very last in the equation.

 

When finishing up the top bushings dont forget to put some preload on the bushings by jacking up the front about 3 or 4 inches then tourquing the nuts down start with them loose most people dont know this is needed. People think the control arms are suposed to piviot like in a bearing but in truth all the movement is in the rubber bushing.

 

Here's a graph of stock (blue), now (red), and future (either yelllow or green).

The difference between the 22.5" (MT 3019) and 24.5" (MT 3015) is a top end of 82 MPH or 89 MPH.

I was going to run the 22.5" tire, until I talked to the convertor. If I raise the stall, my 60' is going to pick up more than I am anticipating, which means I'm going to make substantial time downtrack. Looking at the time slip database at the other site, an 8.60-8.80 1/8 mile trap is 76-81 MPH on an NA motor. Figure I'll be closer to the latter, and that doesn't jive with the small tire. But an 89MPH top end is good for well into the low 8's.

I'm going to get all of my mods done with the street tires, then perform the math to see exactly how much I'll gain off each tire, and where my trap #'s will be. But with the convertor swap, I have a feeling I'm going to be on the 24.5" tire.

Screenshot2013-01-06at32414AM_zps90eee4e4.png

 

hi everyone. i cant post a new forum thread and need to work out how. can i get a private message to assist?

 

do you have a converter builder picked out?
Continental torque converter in Inglewood CA is excellent, builds private label converters for some big names
ask for chris
one clue is if your builder has a dynamic spin balancer- or do they static balance on their lathe

 

Yes, there's a convertor builder here in Kennedale. We have a company in florida build the ones for the camaro, but most of the locals use this guy for their stuff.

 

looks as if I need to talk to may converter