Hi all i have an 85 z28 im needing to get a stall converter for an i am not sure witch stall would be best. The set up is a 350 with a lunati voodoo cam part number 60105 holley 650 carb 3:73 posi rear end and a 400r trans an vortec heads. The biggest thing is that i want to be able to drive it around the city no futther than 40 50 miles from home but i mostly wont be driven no more than 20 miles in a trip averaging a speed of 45 to 55 mph i want a tc that does not have a ton of slip while crusing an i was wanting to stay around 2500 stall if possible can some one please shine some light on the situation... Thsnks!

 

2400-2600 stall will work fine.

 

That's a rather huge cam for a 350. It's going to take a lot more than a 2600 stall to keep it from being a complete turd!
From the info in your post, it's hard to understand what your goals are for the car. Any interest in performance at the strip? with slicks/drag radials? If so, don't consider anything less than 3600 stall.
Call Yank (best street/strip converter made IMO): www.converter.cc and talk to Dave.
or Edge (good budget street/strip) : www.edgeracingconverters.com and talk to Andre.

Do you ever run at Edgewater or TriState?

 

Can the vortec heads handle .525/.546 lift? Can the pistons?

That cam has an operating range of 2500-6500. For street/strip, you're going to want a converter that stalls around 3000-3500 rpm to let the cam do it's job. You can run a lower stall converter but you'll be giving up performance in the trade off.

I ran a flat tappet cam with very similar numbers in a 383. It was strip only and I had a 10" converter that stalled around 3600 rpm. The car ran very high 11's.

 

Are you running an Open Plenum? If you're not, you can get by with a milder stall. Your operating range starts at 2500RPM, so you want to be a bit higher than that The key is to get a converter that will toss you right into your power band. With your rear end gearing, a 3000+ converter would be nice. You may want to switch to a 750CFM carb too. I don't think that the 650 will give you what you're looking for. I know that I had a 280 Cam in a truck with a similar power band and tossed in a 2400 stall. My cam was a single profile Lunati Voodo too. It was a dog. To make matters worse, I was running a Wieand open plenum high rise and an open diff with 2.73 gears. The setup was totally wrong. The truck would drive fine, but the only place it excelled was on the highway. It sounded cool though, but that's about it.

Call Lunati. They'll probably be happy to help you select a converter for your setup free of charge.

 

Since you're using a 700R-4, there's no need to worry about converter slip when cruising. Just don't disable the lockup. You'll need NO less than a 3.73:1 axle with that combo. Even then, that much cam may not be happy cruising at such low RPM. Timing and carb adjustment will have to be perfect, or it'll feel like it's surging.

 

Right it has a gm mid rise intake i got a great deal on the car for about a 1000 buks and the to me the body was worth that alone. I dont exactly like the set up but with a new baby i dont have a ton of money to do as i like. I just looked up the carb number it is,a 750 an from what i understand i do believe the heads will handle it an for the piston i was told they were domed. I put a small bolt in the spark plug hole an it felt like the piston had a slope on it. I dont want a monster stall like 3500 i wanna keep the 3:73 gears an as far as track time here an there but not the sole purpos of this car i just want a weekend special to smoke stangs an dtive back an forth to work 5 minutes away. I just thought this car was a little beefed when i got it but took it partially apart an noticed it had a little monster inside it. as far as stall i dont want something that i have to worry about flashing an smoking the tires off in front of the popo just looking to make it street friendly but at the same time a beast

 

AlkyIROC ,is correct, Id consider nothing lower than a 3200 stall with that cam, and that gear , and you better have at least 10:1 compression, if your not willing to exceed 2800rpm stall, drop back to the lunati 60104

http://forum.grumpysperformance.com/...hp?f=71&t=1715

 

Yes i do have better than 10:1 compression ratio an how would a stall like that react to street driving

 

Ive run a more aggresive cam than that lunati youre looking at and ran with a 2400 stall with 3.55 gear with no problem and no performance issues. Your carb will have to be set dead on or it will suck to drive in town.

 

You can have a lot of mismatched parts and it will seem like it has no performance issues but if all the parts are better matched together, you'll get an even better bang for the buck. Build the engine for 90% of your driving style. A car that's normally driven on the street and highway doesn't need parts that belong on the dragstrip.

 

Agreed just dont want to have to spend a but load of money on a freshly rebuilt engine just thought maybe a stall would help out with the power brakes and the hard edle under load

 

I have a 3600 stall Yank converter and it drives normally unless I step on the gas then it jumps at ~3600 rpm. It works great for me.

 

4200 stall converter here. Don't skimp on a converter or you'll be sorry. Getting anything less than 3000 is a waste of time in my opinion (although it should be noted more is not necessarily better).. particularly in the world of aftermarket cams geared for performance.

 

Thanks for the opinion i will buy a quality converter any brand u guys could recomend that are on the more cheaper end but good quality. my buddy has a b&m converter whats ur opion on them. I never had to run a stall befor so this is new to me

 

B&M is one of the worst quality ones out there.
After reading through all of this thread, I think the best compromise for you would be the Yank SS3600. It's the tightest feeling/driving 3600 converter you will find; period. Yet, it will flash to 3600 behind most well-tuned small blocks.

If you want to stay with a cheaper brand, from my experience I can recommend Edge, but their 3200 will drive about like the Yank 3600, their 3400 will perform like the Yank 3600 but will feel looser for driving around.

 

I went with Circle D on mine.

A GOOD converter will run you on average $7-900. You don't always have to get the best of everything, but a converter is one of those areas where you definitely should if you can afford to do so. I think it's an extremely critical component, even in a daily driver.

 

Here is a Yank SS3600 being driven around town.

Why not to buy a "cheap" converter.
http://www.ls1tech.com/forums/automa...education.html

I'd recommend a Vigilante 3200 or Yank 3600.