will it rip up tranny
Supreme Member

Joined: Jul 1999
Posts: 1,556
Likes: 28
From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Many different opinions on this.
Originally, the 5.7 was not available with a five speed because the motor could put out more torque than the tranny was rated for. Then, in 87 or 88, they came out with the World Class 5 speed, and it was mean enough to deal the the 5.7. Of course, later, they came out with the 6 speed, and that was very nice with the big V-8.
However, there have been numerous people on the boards here that have used the whimpy 5 speed with the 5.7, and had good results, others go thru them like underwear. It all depends on how you drive, and how well maintained the tranny was.
Poke and hope..... If you are thinking of buying a tranny, get the WC 5 spd, or go for the T-56, six spd. Either way, you should be good to go.
Good luck!
Originally, the 5.7 was not available with a five speed because the motor could put out more torque than the tranny was rated for. Then, in 87 or 88, they came out with the World Class 5 speed, and it was mean enough to deal the the 5.7. Of course, later, they came out with the 6 speed, and that was very nice with the big V-8.
However, there have been numerous people on the boards here that have used the whimpy 5 speed with the 5.7, and had good results, others go thru them like underwear. It all depends on how you drive, and how well maintained the tranny was.
Poke and hope..... If you are thinking of buying a tranny, get the WC 5 spd, or go for the T-56, six spd. Either way, you should be good to go.
Good luck!
No, you will have to make modifications to make the T-56 work. Their is a <a href=http://www.skulte.com/T56.html>tech article</a> on how to do it. I have heard it's well worth it though.
[This message has been edited by IH8FORD (edited August 21, 2001).]
[This message has been edited by IH8FORD (edited August 21, 2001).]
Member
Joined: Jul 2001
Posts: 401
Likes: 0
From: Surrey,BC,Canada
Car: 1989 Trans Am GTA
Engine: 5.7L 600cfm carb
Transmission: 700R4 (auto)
what kind of 6 speed transmission can you buy NEW that is compatable with the 5.7L engine? will it bolt up nicely? or do you have to screw around with it to get it on? i got a 5.7L TPI and i was thinking about changeing it to standard. i have read the tech articles on this and i dont want to get some old junky transmission from a junk yard. i wana know if there are any aftermarket transmissions for the 5.7L TPI. also, will switching my 350 to a carb make it easyer on the tranny? please reply
you can buy a new one from summit about 3 grand. i have heard you must "massage" your tranny tunnel abit
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87 z28 bowtie aluminum 420small block dry sump crower lt. wt. knife edged crank oliver lt wt rods brodix track 1's super ram intake slp 1 3/4 headers accel dfi art carr 700 r4 3.42 gears ssm sub frame/ladder bars.....other parts on the way ,soon to be finished!! couple more weeks!!!
http://people.ne.mediaone.net/gdm
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87 z28 bowtie aluminum 420small block dry sump crower lt. wt. knife edged crank oliver lt wt rods brodix track 1's super ram intake slp 1 3/4 headers accel dfi art carr 700 r4 3.42 gears ssm sub frame/ladder bars.....other parts on the way ,soon to be finished!! couple more weeks!!!
http://people.ne.mediaone.net/gdm
Member
Joined: Jul 2001
Posts: 401
Likes: 0
From: Surrey,BC,Canada
Car: 1989 Trans Am GTA
Engine: 5.7L 600cfm carb
Transmission: 700R4 (auto)
3000 for a new transmission? i suppose thats in US dollars right? so for me it would be more like.... $5000 cause im in canada. are you sure they are that expensive?? by any chance would a 5 speed be cheaper? and what is summit?
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iTrader: (1)
Joined: Mar 2001
Posts: 1,100
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From: In the corner of my mind!
Car: 1989 TTA #1240
Engine: 3.8 SFI turbo
Transmission: 2004r
Axle/Gears: 3.27
IMHO i would set it up for a t-5,no starter,bellhousing,slave cylinder or speedo problems(vss)i would order a tremec 5 speed it's a bolt in application.and will handle more tq than the t56(in TKO form).i've been running my t-5 for a while with no problems just don't launch in first gear or power shift and it will last
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From: Shakopee, Mn
Car: 89 Iroc
Engine: 305TPI
Transmission: T5
To tell you the truth the T-5 will not handle a 350 because they are rated at 300 ft/lb. I would say if you are going to do it go for the T-56 from a 93 to 97 Z or TA. They will cost you from $700-1500 depending on where you get it. You will need to make sure you get everything with that like peddles bell housing etc... You will also need a new cross member from www.skulte.com for around $150 or so cant remember off hand. Also if your car was not made for a manual you will have to make a hole for the cluth peddle. I am going to switch out my T-5 because I am afraid that I will blow it up with the Ram Jet 350 that is going in soon.
<font face="Verdana, Arial" size="2">Originally posted by Psyte:
3000 for a new transmission? i suppose thats in US dollars right? so for me it would be more like.... $5000 cause im in canada. are you sure they are that expensive?? by any chance would a 5 speed be cheaper? and what is summit? </font>
3000 for a new transmission? i suppose thats in US dollars right? so for me it would be more like.... $5000 cause im in canada. are you sure they are that expensive?? by any chance would a 5 speed be cheaper? and what is summit? </font>
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1991 1LE Z28 355cu 5SPD (ORIGINALLY 305 BEST E.T. 14.186@99.86mph)NO PASSES ON 355 YET.MINI RAM INTAKE,AFR 190 HEADS,10.23:1cr 24# SVO INJECTORS,BBK 52mmTB,AFPR
FULL ROLLER MOTOR,1.6 rockers MSD 6AL
AUTOMETER A/F GAGUE MARCH PULLEYS,HEDDMEN HEADERS 3IN EXH NO CATS FLOWMASTER,POWER TRAX NO-SLIP LOCKER,3:42 GEARS,LAKEWOOD LOWER CONTROL ARMS HOTCHIKS STRUTTOWER BRACE,COMPETTION ENG.SUBFRAME CONNECTORS
MALLORY TACH W/SHIFT LITE
BLACK, TINTED WINDOWS, TAIL LIGHT COVERS BIG BLOCK COWL INDUCTION HOOD,SHAVED DOOR HANDLES
67RS 327cu 92K ORIG MILES.NEWER GM HEADS HEADERS,650 HOLLEY CARB,CAM, 350 TURBO TRANS W/SHIFT KIT&COOLER 12 BOLT POSI 3.73'S MUTLILEAF SPRINGS
NEW VINYLROOF&CARPET, COWL HOOD,HIDE AWAY HEAD LITES,
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iTrader: (1)
Joined: Mar 2001
Posts: 1,100
Likes: 0
From: In the corner of my mind!
Car: 1989 TTA #1240
Engine: 3.8 SFI turbo
Transmission: 2004r
Axle/Gears: 3.27
t-5's will hold up i have a few all out runs on mine you just can't dump the clutch at 5000 or powershift it and it'll be fine
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87 trans am,gm crate 350(4 bolt mains 10to1),L98 aluminum heads,LT4 hot cam,slp runners,slp 1 5/8 headers,3in.y-pipe,edelbrock base,hi flo cat,air foil,afpr,as&m ported plenum,gutted airbox,t-5 tranny w/centerforce clutch and a 3.27 9bolt(11.9in. brakes),ed wright's fastchip,relocated iat sensor,160 fan switch&t-stat,tb bypass,accel supercoil,cap& rotor,hollowed maf,slp 3in. catbcak.
FOR SALE!FOR SALE!FOR SALE!FOR SALE!FOR SALE!
EVRYTHING IS FOR SALE WITH MY CAR(EXTRA ENGINE,TPI INTAKES,RUNNNERS,PLENUMS,ECM W/CHIP,new springs,aluminum driveshaft.
GETTING OUT OF THE 3RD GEN MARKET BEST OFFERS
CONSIDERED!!!!!!!!!!!
anyone from new jersey interested??????I NEED TO SELL I'M BUYING A GRAND NATIONAL!!!!!!!!
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87 trans am,gm crate 350(4 bolt mains 10to1),L98 aluminum heads,LT4 hot cam,slp runners,slp 1 5/8 headers,3in.y-pipe,edelbrock base,hi flo cat,air foil,afpr,as&m ported plenum,gutted airbox,t-5 tranny w/centerforce clutch and a 3.27 9bolt(11.9in. brakes),ed wright's fastchip,relocated iat sensor,160 fan switch&t-stat,tb bypass,accel supercoil,cap& rotor,hollowed maf,slp 3in. catbcak.
FOR SALE!FOR SALE!FOR SALE!FOR SALE!FOR SALE!
EVRYTHING IS FOR SALE WITH MY CAR(EXTRA ENGINE,TPI INTAKES,RUNNNERS,PLENUMS,ECM W/CHIP,new springs,aluminum driveshaft.
GETTING OUT OF THE 3RD GEN MARKET BEST OFFERS
CONSIDERED!!!!!!!!!!!
anyone from new jersey interested??????I NEED TO SELL I'M BUYING A GRAND NATIONAL!!!!!!!!
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