Tranny for 450hp
01-15-2007, 06:06 PM
#1
Thread Starter
Join Date: Jan 2007
Posts: 4
Tranny for 450hp
My uncle has a2003 Mach 1 auto.withProCharger and full exhaust. The car is not running correctly. It hesitates most of the time through the power band.We were told that it needs a Cobra air sensor. There is also a problem with the shifting because it does'nt shift when it redlines. It over-revs for a second and then shifts. We where told it would need a better tranny(for the 450hp). The tranny went out with 3k miles after the supercharer was put on. We then rebuilt the tranny withBorg Warner parts. Is this going to be enough?Wedid'nt test drive it yet.Will the cobra sensor fix both problems? My unclewants to keep the car an automatic.What tranny upgrades are there for me?
Thank for any help.
Thank for any help.
01-15-2007, 07:10 PM
#5
2nd Gear Member
Join Date: Apr 2005
Location:
Posts: 403
RE: Tranny for 450hp
I think you'll definitely need a new tranny... autos in our Stangs are pretty weak. Also note that because the Mach has an auto tranny it doesn't have the forged internals of the Cobra. (Only manual Machs got the forged internals). So, the engine is weaker as well.
01-15-2007, 07:16 PM
#6
2nd Gear Member
Join Date: Dec 2004
Location: laporte tx
Posts: 426
RE: Tranny for 450hp
^^ Your wrong. Strictley peformance in houston has a 9.40 03 cobra with a 4r70w so they can be built for power. Also the 5 speed or autos didnt come with forged intals, only the crank.
01-15-2007, 10:41 PM
#7
Join Date: Jan 2007
Location:
Posts: 16
RE: Tranny for 450hp
My nephew started this thread. I am the owner of the Mach 1 he is referring to. It was tuned. The stock chip was removed and the supercharger chip was not installed. Instead, we used the sniper. The tranny did not shift correctly as soon as we left the dyno. We told we needed a larger mass flow sensor. ?????
01-15-2007, 10:46 PM
#8
5th Gear Member
Join Date: Sep 2006
Location:
Posts: 2,437
RE: Tranny for 450hp
ORIGINAL: ChevyZ28
My uncle has a2003 Mach 1 auto.withProCharger and full exhaust. The car is not running correctly. It hesitates most of the time through the power band.We were told that it needs a Cobra air sensor. There is also a problem with the shifting because it does'nt shift when it redlines. It over-revs for a second and then shifts. We where told it would need a better tranny(for the 450hp). The tranny went out with 3k miles after the supercharer was put on. We then rebuilt the tranny withBorg Warner parts. Is this going to be enough?Wedid'nt test drive it yet.Will the cobra sensor fix both problems? My unclewants to keep the car an automatic.What tranny upgrades are there for me?
Thank for any help.
My uncle has a2003 Mach 1 auto.withProCharger and full exhaust. The car is not running correctly. It hesitates most of the time through the power band.We were told that it needs a Cobra air sensor. There is also a problem with the shifting because it does'nt shift when it redlines. It over-revs for a second and then shifts. We where told it would need a better tranny(for the 450hp). The tranny went out with 3k miles after the supercharer was put on. We then rebuilt the tranny withBorg Warner parts. Is this going to be enough?Wedid'nt test drive it yet.Will the cobra sensor fix both problems? My unclewants to keep the car an automatic.What tranny upgrades are there for me?
Thank for any help.