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Author Topic:   more turbo350 questions
neil rucker
Dirt Forum Champ
Total posts: 799
posted November 27, 2003 07:50 PM  
ive never used an auto trans before. what do i need to do other than a stock overhaul? will i need a stall converter? what speed? manual valve body? some sort of shift kit? help out a dummy please! thanks in advance. neil

racer17j
Dirt Forum Champ
Total posts: 5390
posted November 27, 2003 08:38 PM  
what do i do with the stock detent?

rico 08
Dirt Forum Champ
Total posts: 1139
posted November 28, 2003 09:24 AM  
You can just remove the detent cable,cut the cable and fill the cable housing that bolts to the case with epoxy,you said you are going to use 2nd gear right?Then you may have a problem with the trans overriding aka shifting into drive at a high rpm.

neil rucker
Dirt Forum Champ
Total posts: 799
posted November 28, 2003 09:53 AM  
what can i do to prevent the trans. from shifting out of 2nd gear? i dont really know much about auto trans, but i was told one time on a street car that the detent had to be hooked up and adjusted properly or it would burn up the tranny. i dont really understand how it works. can you just do away with the detent inside the trans, or lock it some how? thanks.

robhbk24
Dirt Freak

Total posts: 372
posted November 28, 2003 02:20 PM  
i don't use a turbo 350 we use a light weight metric 200. just cut the detent cable and fill it in i it shouldn't shift into high unless you put it there mine never has. i've gotten 2 and 1/2 seasons out of the first rebuild and it was still working when i brought it in.

racer17j
Dirt Forum Champ
Total posts: 5390
posted November 28, 2003 03:23 PM  
A 700r4 needs the T.V. (detent) cable hooked up to control trans pressure but the 350 dosen't. A 400 will shift itself through the gears at high rpm even if you still have it in first, but I have not seen a 350 that would.

dan ferry
Dirt Maniac

Total posts: 183
posted November 28, 2003 06:42 PM  
you have to leave the vacuum hooked to modulator or it will act like its in nuetral when off the gas and when u get back on it kicks back in. i use a hurst or b&m shifter that you can use first on restarts and slam shifter forward into second if you only hit once itll stop at second and ive never had it go into drive and i top out about 6200rpm. just cut detent off and put silicone over end or apoxy or you can leave it whole and zip tie out of the way.

dan ferry
Dirt Maniac

Total posts: 183
posted November 28, 2003 06:47 PM  
i also dont feel u need to waste money on manual valvebody its up to u on stall converter but not necisarry they make more heat i run a stock converter and a pretty decent cam and dont have probs with stalling or surging theres no advantage on track cause tou should be above lock in rpm coming offf corner anyways

wermm
Dirt Maniac

Total posts: 107
posted November 28, 2003 07:25 PM  
I have a th350 with 3 seasons on it, completely stock with the vacuum capped off and the cable cut. Worked good for me in second with 3.73 gears and 205/70/15 tires.

racer17j
Dirt Forum Champ
Total posts: 5390
posted November 28, 2003 07:33 PM  
i dont know how they are down shifting with vacuum hooked up and shifter in second unless detent is hooked up ive never had a tranny down shift when shifter is in second and detent is cut and as far as modulator goes it definetly causes it to free wheel alot more there is a difference between tranny floating and torque converter release itll still let u use engine to slow rear some and for first on restart i have beat alot of cars into turn1 that way i never slam foot on floor on restarts or coming off no wonder u break tires loose.

dan ferry
Dirt Maniac

Total posts: 183
posted November 29, 2003 05:56 PM  
im not trying to ruffle any feathers 17j i guess depending on track u could have probs startind in low

20bmw
Dirt Full Roller

Total posts: 74
posted November 29, 2003 06:46 PM  
I have never had a turbo 350 shift into drive when it was in 2nd gear at high rpm`s.
the only shifting i have ever had is if the tranny is in low it will shift to 2nd gear by the build up of fluid pressure.
Plugging the vaccume will give you 500 to 700 rpm`s higher before it will shift from 1st to 2nd when in 2nd gear

20bmw

racer17j
Dirt Forum Champ
Total posts: 5390
posted November 29, 2003 07:24 PM  
I ran a 350 in a pure stock left it in low gear and it never shifted we turned 6000. vacuum and cable were taken off.

dirtracer7
Dirt Freak

Total posts: 337
posted December 03, 2003 11:48 AM  
If you unhook the vacum you will similate wide open throttle.WOT or low vacum raises shift points.So i would run without the vac connected and no t.v. cable hooked up.Or better yet run a stick and have the capability to push start when your stater takes a crap at the track.

racer17j
Dirt Forum Champ
Total posts: 5390
posted December 03, 2003 05:58 PM  
i'm with you dirt but i have no choice rules say t-350 only for my class if i had the choice i'd run a 3 speed all the way

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