91 GTA 5.3 ms3 carb swap need help
06-24-2017, 01:24 AM
#1
Junior Member
Thread Starter
Join Date: Jun 2014
Location: Hamilton ontario
Posts: 11
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1991 pontiac trans am Gta
Engine: Lb9 5.0 soon to be L98 5.7
Transmission: 700r4
Axle/Gears: 3.27
91 GTA 5.3 ms3 carb swap need help
hi i am swapping my 5.3 with a ms3 cam and carbed i am running a 700r4 i was wondering if i leave my factory 305 ecm in the car will i still have the torque converter lockup? and my factory speedo?
06-26-2017, 03:49 PM
#2
Moderator
iTrader: (14)
Join Date: Mar 2000
Location: Littleton, CO USA
Posts: 43,169
Likes: 0
Received 35 Likes
on
34 Posts
Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Re: 91 GTA 5.3 ms3 carb swap need help
TCC lockup? No. It needs TPS, vacuum, and RPM data.
Speedo? Yes. It doesn't go through the ECM.
Speedo? Yes. It doesn't go through the ECM.