if it drops to 4500 on the shift it is WAY TOO TIGHT !!!!! you couldnt slow the car down after the shift more if you pulled the chute !

i am usually in the office from 5am to 5pm mon-thurs 316-542-9869

an 8" could help. do you have any data like an msd that records engine rpm?

3.70

unless you have some suspension mods that you can do, you will have to take gear reduction out of the rear end. You only want to make 1 change at a time, so if you are going to tighten the converter you may want to do that first and see if it will go down the track with just the stall change. It is ...

have you dynod the motor? where is peak hp? I like to keep as much gear in the rear end as possible so you may need to tighten the converter. In a perfect world we would just drop the first gear in the trans from 1.8 to 1.5 and leave the rear end gear alone and tighten the converter. Problem is ther...

call them and ask for the lightest viscosity compressor oil they have and ask the viscosity. If you cant find it call Keith Neal , he keeps it in stock

the power curve of the motor dictates how much drop we want on the shift, but 800 is ok as long as you do not run out of rpm before the finish line

Ams oil makes a synthetic compressor oil that works very well and it is available in several viscositys. For most apps we see the 20W being used (nitrous , blower or turbos that spool easy)
lightweight 6.9 senistoke for nat asp or turbos that need a quicker spool time

the effeciency capacity of the 9.5" is relative to the application. please answer the following nitrous / turbo / blown / nat asp cubic inch and bore and stroke heads camshaft specs compression efi/carb shift rpm finish line rpm weight w/ driver gear ratio tire size transmission trans brake eng...

i hate to tell you we do not do the 200R4 race converters. If your not in a big rush (couple weeks) i could make an acception and change the stall for you. Marty

it will go Waaaay faster when you fix all the issues

if you are bracket racing, leave the p/g in it , for consistancy if you are heads up racing and only care about ET then a 400 might pick you up, but only if the chassis/tire can take that much hit , we are talking about a first gear ratio of 12.4 to 1 (2.48/5.00) . if it will take this hit , it will...

Sounds alittle loose. If you are 1/8 mile racing and you do not plan on running any more nitrous then 600 rpm drop is livable, but if you want to add more nitrous you will need to tighten the converter.

what rpm do you shift at ? If you short shift there will be little drop.