Hey guys I am possibly purchasing my first automatic ls1 I have had a stick for a while now love it, But i do not love it in Atlanta traffic. So i have found a lowmileage auto z28 it has crappy 273 gears but is really cheap. My questions are what type of cam should I put in this car? the car still needs to be able to be driven daily and I DEF want something on a 112 lsa, do i have to get a stall when I do the cam or can the car be driven without a stall for a while. And When not if I decide to lose those 273 gears will I have to change the stall again? I know this is a lot of questions but how much hp can a stock 4l60e stand I know that a stock t56 will hold up fairly well on a heads cam car but Im not sure about the automatics. any helop would be greatly appreciated. And how often do these automatic transmission mounts break>

 

If you got a cam I would probably go with a smaller size cam like 224/224 on a 112 that still sounds good with like a 3200-3600. Ive ridden in a Yank SS3200 and a Yank SS3600 car and the 3200 seemed like stock obvioulsy with a bit more punch and the SS3600 felt alittle looser but still decent. That stuff probably wouldnt be to bad on a DD in heavy traffic I would recommend a trans temp gauge and 1 or 2 coolers also. A 3.42 gear probably would be a nice gear for an DD auto with a small cam and small stall. 2.73's probably dont need to be changed out but alittle more gear wouldnt hurt. Ofcourse you dont need a stall when your adding a cam but a cam without a stall is kind of pointless being as you wont really be in your powerband right away if you do plan on doing some sort of racing.

 

What mph do these convertors lock up?

 

Well you sure ask alot of questions there stranger!

Good to see you come over from the dark side...LOL.

As far as the cam, well that question really depends on what your short and long term goals are for the car. And I can tell you from hanging out here for a long time now... the SPonsors won't be too much help on that one. But some other guys might chime in... best to pose that ??? in an Engine Tech forum.

No you do not "have " to get a Stall when changing the cam... unless you go big. The stall speed is determined by the camshafts profile or when it begins to make power. And the engine guys will know what the cams are capable of based on the heads. I recommending searching Stalls for that answer as there will be hours and hours of reading for you onthat subject alone!

On the gears... not necessarily. I treally does depend on what you are wanting the car to do.

A stock 4L60E was designe dto take up to 385 lbtq or so. A heads/cam engine can be hard on a 60. But that really depends on how well it was maintained nad how good of a job the Tuner did with the tranny tables.

Mounts... put a new one in it if you are nervous and forget about it.

If you would like to discuss this more in depth don't hesitate to call me tomorrow!

g

 

Converters usually are set to lock in 4th around 40-45mph in the city I use 3rd gear and have lockup set at 30mph which seems to keep trans temps down. I usually only use 4th on the highway. Btw a bigger converter is usually alittle better because with the stock converter and cammed cars usually want to push out of the brakes alittle because with a tune the idle is usually alittle higher then stock. I guess it really all depends on the person driving and what you can and cannot deal with.

 

Thanks for all the help guys I really want a stall that is drivable i have a friends that locks up at 40 and its not bad at all. I was thinking a 228 cam or a torquer version 2 but dont know if the T2 would be way to big. Ill give you a call tomorrow or sometime this week and ask some questions. ratchthed, so you can get like a 4000 rpm stall and it could be drivable everyday?


BTW im comming to the darkside because Im tired of getting whooped by autos out of the hole lol

 

I live in Atlanta, and like RamAir02TA77 said, I think a 3200-3600 stall is fine. Mine is a 3400 and I drive it in stop and go traffic all the time with no problem.

Just match your stall and cam appropriately depending on what your goals are for the car. A 228cam or Torquer 2 cam would probably match pretty good with a stall in the 3200-3600 range (or larger).

Honestly a lot just depends on what you feel like you can daily drive. Ask different people and you will get many different answers on how big of a cam and stall are daily driveable. With a good tuner a lot of cams can be daily driven, its pretty much preference. I actually wish i had gotten a slightly bigger stall and maybe a little more cam for my setup.

 

Well yes you certainly could run a 4,000 RPM stall converter on the street every day! However, I would not recommend it personally. The reason is, I think it is just too high for a car that is predominantly driven on the street every day.... but that is my own opinion. We remove them for smaller stalling units fairly often. As a matter of fact we will be removing one Monday morning for one of our customers who thiks it is just too much for him. He'll keep it and have us swap it when he enters races 3 or 4 times a year though. He likes it alot, but no for 80% street / 20% track duty. That is just one example. You will definately see many guys here on the interweb that absolutely love theirs, and you'll find some guys just don't care for it.

Yep... that's what they all say brothuh!

g