04 Duramax vs. 05 Duramax (Tq increase)?
#1
Staging Lane
Thread Starter
iTrader: (1)
Join Date: Nov 2004
Posts: 73
Likes: 0
Received 0 Likes
on
0 Posts
04 Duramax vs. 05 Duramax (Tq increase)?
My dad has an 04 Duramax, which I think was rated at 320hp and 520ft-lb tq. I read the 05 have 310 hp and 605 ft-lb of tq.
Does anyone know what was done to get such a huge increase in torque, what it a different cam or just a computer modification???
Also, why are the manual tranmission duramax's only rate at 300 hp and 520 ft-lb of tq? Seems weird to detune the manuals.
let me know
UofMN
Does anyone know what was done to get such a huge increase in torque, what it a different cam or just a computer modification???
Also, why are the manual tranmission duramax's only rate at 300 hp and 520 ft-lb of tq? Seems weird to detune the manuals.
let me know
UofMN
#2
Moderator / Sponsor
iTrader: (4)
Join Date: Nov 2001
Location: SoCal
Posts: 1,308
Likes: 0
Received 0 Likes
on
0 Posts
2004.5+ Duramax's are equiped with a variable venturi/vein turbo and it is much more effiecient. The designation different between the older and newer motor is LB7 and LLY respectively.
Thread
Thread Starter
Forum
Replies
Last Post
calsdad
8-Lug Truck Performance
34
06-14-2023 11:07 PM
dantheman1540
Tuning, Diagnostics, Electronics, and Wiring
4
09-18-2015 03:03 AM