Will stock 700R4 handle over 450 hp?
Thread Starter
Senior Member
Joined: Jul 2000
Posts: 992
Likes: 0
From: Tx
Car: 92 Z, 91 Formula, 04 CTS, 01 Tahoe
Engine: 355 forged 4 bolt, SuperRam, 58mm t
Transmission: T5, looking for t-56
Will stock 700R4 handle over 450 hp?
My new motor is running 375hp from the flywheel. I plan on adding between 75 to 125 shot of NO2. I'm having doubts on the stock tranny.What do you guys think? Or better yet,know from experience?
Supreme Member
Joined: Jan 2001
Posts: 1,978
Likes: 0
From: PA
Car: 88 Firebird WS6
Engine: 350 TPI
Transmission: T56
Axle/Gears: 3.42
Should be OK. You didn't state the year of your car, a 88 or later transmission is a better guarantee. I've seen earlier models fail quickly under much less. Also if it has high milage there's no real guarantee. Smaller diameter than stock torque converters also allow for a larger factor in reliability with more power to the wheels. I'n a worst case senario your torch it and get the opportunity to beef it up duing the rebuild.
Thread Starter
Senior Member
Joined: Jul 2000
Posts: 992
Likes: 0
From: Tx
Car: 92 Z, 91 Formula, 04 CTS, 01 Tahoe
Engine: 355 forged 4 bolt, SuperRam, 58mm t
Transmission: T5, looking for t-56
Cool.It's a 91.So I should be okay for a little while then?
------------------
'91 RS 5.0 TBI
New paint-solid black
ROH Snyper wheels-17x9 wrapped in 275/40/17
ASCD SS hood, High-rise Z-28 spoiler,shaved handles/antenna,
Hooker super comp headers,dual 3" exhaust(yeah,too much for my set-up,but it was free!),two 1-chamber Flomasters,Eibach Sportline springs,KYB struts/shocks,rebuilt steering linkage,Iroc sway bars,IROC steering box,wonderbar,140 Iroc gauge cluster,Auto meter gauges,dual guage A-piller pods,open air filter,AFPR,smog delete
TBI mods,180* thermostat,
383 stroker in the works
President-Austin 3rd Gen F-body c.c.
Austin 3rd Gen F-body c.c. message board at
www.hpsmotorsports.net
See my car and others at www.ride4life.net
------------------
'91 RS 5.0 TBI
New paint-solid black
ROH Snyper wheels-17x9 wrapped in 275/40/17
ASCD SS hood, High-rise Z-28 spoiler,shaved handles/antenna,
Hooker super comp headers,dual 3" exhaust(yeah,too much for my set-up,but it was free!),two 1-chamber Flomasters,Eibach Sportline springs,KYB struts/shocks,rebuilt steering linkage,Iroc sway bars,IROC steering box,wonderbar,140 Iroc gauge cluster,Auto meter gauges,dual guage A-piller pods,open air filter,AFPR,smog delete
TBI mods,180* thermostat,
383 stroker in the works
President-Austin 3rd Gen F-body c.c.
Austin 3rd Gen F-body c.c. message board at
www.hpsmotorsports.net
See my car and others at www.ride4life.net
Supreme Member
Joined: Jul 1999
Posts: 3,484
Likes: 56
From: Calimesa, California, U.S.
If you do not have the Corvette servo or the Trans-Go Performance Shift kit then at least do that to insure you have a
chance at keeping this together for a while, worst case you will already have these parts for the next rebuild. If I can
be of help call me at 800 7763288 or email me.
chance at keeping this together for a while, worst case you will already have these parts for the next rebuild. If I can
be of help call me at 800 7763288 or email me.
Member
Joined: Mar 2001
Posts: 250
Likes: 0
From: Albany NY, USA
i thought the 87's had the better transmission
------------------
1987 IROC-Z
G92, LB9 305 TPI, 3.23, Bright Red with Carmine Interior, Pioneer DEHP47DH CD deck.2 JBL DS645 4*6 (F).. 2 JBL DS965 6*9 (S).. New 305CI TPI ,World Torquer Heads, and soon to be Body Work
------------------
1987 IROC-Z
G92, LB9 305 TPI, 3.23, Bright Red with Carmine Interior, Pioneer DEHP47DH CD deck.2 JBL DS645 4*6 (F).. 2 JBL DS965 6*9 (S).. New 305CI TPI ,World Torquer Heads, and soon to be Body Work
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