mushroom281

iTrader: (40)

and headers how will this work is it too much cam for the gear ? not enough stall for the cam?

please help me with my combo

I would like to leave the 2:73 gear in and maybe down the road put a 150 shot on it

I would like to keep it simple and would like some mid to low 11's

RevGTO

iTrader: (12)

My .02: I would want 3.42s with that cam/stall combo. Or get a smaller cam. It also depends on what other mods you have on your car. A cam that size needs to breathe.

PunkNPonys

iTrader: (2)

Well if you really want to keep those gears you need a 4000 or bigger converter. If you want to change the gear i would go 3.73s and maybe a 4000 stall. But it also depends on the tire size you plan to run. Just my .02 cents.

mushroom281

iTrader: (40)

bigger stall?? really why would a 4000 stall work better with a 2:73?

and I plan on full length headers also

Lady Redhawk

iTrader: (6)

2.73 gears + 3500 (or higher) torque conveter can = trouble. Even with a tranny cooler, you will cause the tranny to run very hot in low rpms in 4th gear (cruising). You need the higher gears to raise your rpms up. Running in 3rd gear all the time is a "fix" for this if that is what you want to do.
I believe the false misfire is not always the reason people have had trouble with the converters not locking up correctly, too low a gear has played a much larger role in this than people have realized. 3.73 gears is your better choice for a high stall torque conveter.

jay_99z

iTrader: (5)

B.S., How is the tranny going to run hotter at lower RPM's if the tranny is locked up? And obviously it's locked up if it's running low RPM's. If that was the case every car with 2.73's would run hot in 4th.

I know a little about running 2.73's + 4200 stall. Ran that setup for around 40,000 miles. No heating up issues. Same gas milage as stock TC. Once ot locks up there is no differance.

Ragtop 99

iTrader: (7)

If you can stand the looseness, I'd do a 4000 stall with that cam.

You do need a decent size cooler with that combo. raising part throttle shift points will also reduce the looseness and the amount of heat generated.

With 2.73s you will pull through the rpm band only twice and cross the traps at a relatively low rpm in comparison to peak power. I would think about a shorter duration, tighter LSA cam. For the same amount of overlap, you probably could have a beefier midrange and a slightly lower rpm at peak HP. Something like a 228/232 110 with a 110 or 111 ICL might be an interesting starting point.

Lady Redhawk

iTrader: (6)

BS?? I will try not to take offence here. I said it can cause trouble, not always cause trouble. Whether you like it or not, that is exactly what happened to a 2001 C5. Not BS, just fact. The trouble was that the TC wasn’t locking up right, it was slipping at around 2,000 rpms causing it to run hot. I was just trying to help, sharing what happened with us, shame there isn’t more manners around here. You can disagree with me, I don’t care. But there are nicer ways of doing it.

I am curious as to why it happens to some but not all. Do you mind tell me if you leave the tranny in 4th gear while driving around town all the time?

jay_99z

iTrader: (5)

Sorry about that.....it wasn't meant as an attack towards you personally. I believe there was something else that caused it not to lock. TCC solenoid maybe? Who knows? There are plenty of people running a "high stall" with 2.73's. Check out Yanks reccomendation for 2.73 cars at Tbyrne. A bunch of them call for a 3500 or bigger...

My point.....the gears didn't cause it. The converter not locking caused the problem. The converter should lock just fine and there is no additional heat when the converter is locked.

And while driving around town (as in 35 mph or lower) usually leave it in 3. On the highway always in OD (4th)

Lady Redhawk

iTrader: (6)

Thank-you.

I believe that is my point. If you were to leave it in 4th gear at 35 mph around town, you might see the tranny starting to heat up. Do that for several months and there could be trouble. That is what happened to the C5. He always left it in 4th gear. He now has no trouble at all with the 3.73 gears, totally fixed it.
When I had my 3.23 gears I left it in 3rd a lot around town as well, but now I can leave it in 4th all the time with the 3.73s.

Matt D

iTrader: (49)

like everyone said, ditch the 2.73's for sure. that cam is good on nitrous if you eventually spray it. as far as the stall...i would go with the 3500 if you are going to be spraying a lot all the time only. what i would do if i were you is go with the new tci 4000 stall. it has anti-balooning plates if you did spray it, and has been tested up to a 250 shot. that way if you keep it n/a, you have a better size stall, and if you spray, it is still going to be able to take it. just my opinion/advice. thanks.

Z'mnypit

iTrader: (58)

I run a 231/237 cam, LT's, TCI SSF3500, 3.73's, with a 150 shot & I love my set up.. You cant really tell the 3.73's are there, only the interstate. & my stall isnt loose at all it almost feels stock. Good luck with your choice. Later, Vann

2MuchRiceMakesMeSick

And this is where I call BS. There is no way you ran a 4200 stall and kept the same gas mileage as stock.

jay_99z

iTrader: (5)

On the highway. Made many road trips with it.

Not around town. Guess I wasn't too clear on that one. My bad.

mushroom281

iTrader: (40)

well ok how would 3:42's do or should i just go for the 3:73

Matt D

iTrader: (49)

do the 3.73's...a lot better for that cam

2MuchRiceMakesMeSick

3.73 Good choice

Plum Crazy Rob

iTrader: (3)

Well, if you work at it, you won't need the shot - see sig...all motor 87
OCTANE (interesting accidental side effect of a top notch port job leaving the swirl dam in...?!! )


Seriously, good comments in this thread. If you do mostly highway driving like
me, you CAN leave the 2.73 in (but back off on the cam or up the stall, as was said..). If all your driving is say, downtown Chicago under 30 MPH, you wouldn't want to do what I have..its a bit slushy at low speeds without the converter locked... and gears are good for a solid 0.2-0.3 / 2-3 MPH, all else being equal...JUST don't let anybody tell you the car "won't go" because of
the 2.73 gears - Would it help if I said I have a " 'Glide and 4.56 gears"?? Well, I do, and then it has a double overdrive to get home on the highway with - look at the effective overall gearing in the first two gears of a 4L60-E vs a 1.82 low Powerglide

mushroom281

iTrader: (40)

thanks guys I bought an auburn pos unit and a 3:73 gear