Cop Car

iTrader: (14)

how badly does weight affect the stall speed? like for every x ammount of pounds the stall speed goes up x ammount of rpms, can anybody help me out here? im trying to decide on stall speeds and what not.

12secSS

iTrader: (30)

The principle things that affect the stall of a converter are:

Engine Torque - the more torque, the high the stall speed
Final Gear Ratio - lower numerical gearing will have higher stall speeds
Weight of Vehicle - more weight, the higher the stall speed
Size of Converter - the smaller the converter, the higher potential stall

What car are you inquiring about and what stall speeds are you looking at? What is your concern with weight?

Cop Car

iTrader: (14)

i have a LS1 G5x4 in a Datsun 240Z that should weigh in around 2200 lbs when finished. i was looking to buy a used stall from a member on here out of his F body (estimated weight of 3800 lbs) and using it in my Datsun. it is a 4400 stall, and im just afriad with a 1600 lb weight diffrence it will signficantly change the behavior of the stall.

s346k

iTrader: (4)

if anything, the 4400 will feel a lot tighter in the datsun. go big or go home. if i were you, i'd opt for a 4k "nitrous" converter...as you have plans of shooting a -small- shot...

i can't wait for my intended lsx swap to walk all over yours...me on motor, you on spray.

12secSS

iTrader: (30)

All of the characteristics will remain similar if all else is similar, but the stall speed will be much lower. I would image it would be in the higher 3000 range (say like a 3800 or so). The torque output of each will also change that, if he has a stock LS1 and the torque is lower on his then yours, it may even out and be the same stall. There are way too many variables to even guesstimate where the stall will end up. Just try it and see.

BlackHawk T/A

iTrader: (3)

Yank can custom build you a TC to stall right where you want it, with the STR you want, taking all your specs into account.