Okay two questions
1)what is the stall speed for a stock tq converter on a L98/700R4
2)my car is relatively stock (full exhaust, possibly ported and polished heads was told that from previous owner but havent had the motor opened up yet) what is the highest stall that i would want to be putting in the car? and what would be the ideal stall for the car. This car is a daily driver for the 6 months of the year that its on the road.

 

does anyone at least know the stock tq converter stall? i really need help with this.

 

I think its either 1600 or 1800, w/ 1800 being my bet. Sounds right IIRC.

for those mods I would say either a 2400 or 2800 stall TC.

 

thanks as always guys

 

1600 or 1800? That's awfully high for stock! I would've guessed closer to 1200 or 1400. But then I havent actually owned a V8 700-R4....just the V6, and I didnt have a tach. And the flash stall on my AOD, well, we're talking apples and oranges. Ford and Chevy.. lol

How about you find out for yourself man? Sit at an idle with the brake on, and just nail the gas and watch your tach. See what the needle goes up to before the car moves. That'll be roughly your flash stall number.

I would say around a 2400 for now. Yes, you've got a 350 which has extra torque necessary to push a higher stall.....BUT being so lightly modified, somewhere around 3000 might be a tad high. I'd say with some extra modifications, then your motor would push a 3000 stall very well..... The only reason you want to bump your stall speed, truly, is to get into your powerband quicker. And when you modify, it GENERALLY takes away low-end power and adds it up top. So, you bump the stall speed higher so you don't have to deal with that crappy bottom end. It's a compensation thing.

 

lots of great info there, 1800 doesnt surprise me too much considering the l98 for my year is factory rated at 345 tq. Id say 2400 would probably be perfect i was just more curious as to what i am able to run i have a drive train vibe that i think is being caused by a fin or two being broken inside the converter and i just need a replacement until i can afford a T-56 later this summer. I plan on seeing if i can get a used one or something. Again thanks for all the great tips guys

 

It's 1600.