The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Can I see some pictures of a 1" or 2" lift?

**hatzie** · 03-31-2022, 01:57 PM

The LQ4 6.0L is noticeably less fuel efficient than the LM7 5.3L
The stock LQ4 is 330hp and 370ft-lb of torque.
https://www.onallcylinders.com/2018/...ads-cam-specs/
The stock LM7 is 295hp and 335ft-lb of torque.
https://www.onallcylinders.com/2018/...ads-cam-specs/
The stock LR4 is 280hp and 295ft-lb of torque.
https://www.onallcylinders.com/2019/...ads-cam-specs/

There's no replacement for displacement but you will pay for it in fuel. The LM7 5.3L typically runs mid to high teens highway mileage. My 6.0 runs 12-12.5 highway.
The lower displacement engines will need to turn significantly more RPMs to generate the HP numbers the bigger engine will generate at low RPMs.
Comparing the LS4 5.3L in my 2009 Impala SS to the 3.6L in my 2012 Impala LTZ is a good case study. My bone stock SS will spank the LTZ off the line and continue to do so all the way to the 1/4 mile. They come in at roughly the same 300ish HP numbers but the LS4 will shove you back in your seat from a dead stop while the 3.6L needs to be wound way up before it begins to wake up. By the time my LTZ is tached up it's playing catch up for the whole stretch. The 5.3L SS has run a 13.98 and the 3.6L LTZ did 14.74 seconds. Close but no cigar.

My Front Wheel Drive Aluminum LS4 5.3L actually gets higher mileage than the tuck motors. 24 highway and 19 in town. Lighter vehicle and lighter engine. I looked into cramming an LS4 out of a wreck into a 1980s S10 in place of a 90° V6. The LS4 is a Gen IV with the 60° FWD V6 bellhousing bolt pattern and FWD motor mounts so it's really not straightforward to put one in a longitudinal engine bay. Not to mention that the ECM/TCM combo wouldn't like manual transmissions.

03-31-2022, 01:57 PM	#10
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,920	Re: Can I see some pictures of a 1" or 2" lift? The LQ4 6.0L is noticeably less fuel efficient than the LM7 5.3L The stock LQ4 is 330hp and 370ft-lb of torque. https://www.onallcylinders.com/2018/...ads-cam-specs/ The stock LM7 is 295hp and 335ft-lb of torque. https://www.onallcylinders.com/2018/...ads-cam-specs/ The stock LR4 is 280hp and 295ft-lb of torque. https://www.onallcylinders.com/2019/...ads-cam-specs/ There's no replacement for displacement but you will pay for it in fuel. The LM7 5.3L typically runs mid to high teens highway mileage. My 6.0 runs 12-12.5 highway. The lower displacement engines will need to turn significantly more RPMs to generate the HP numbers the bigger engine will generate at low RPMs. Comparing the LS4 5.3L in my 2009 Impala SS to the 3.6L in my 2012 Impala LTZ is a good case study. My bone stock SS will spank the LTZ off the line and continue to do so all the way to the 1/4 mile. They come in at roughly the same 300ish HP numbers but the LS4 will shove you back in your seat from a dead stop while the 3.6L needs to be wound way up before it begins to wake up. By the time my LTZ is tached up it's playing catch up for the whole stretch. The 5.3L SS has run a 13.98 and the 3.6L LTZ did 14.74 seconds. Close but no cigar. My Front Wheel Drive Aluminum LS4 5.3L actually gets higher mileage than the tuck motors. 24 highway and 19 in town. Lighter vehicle and lighter engine. I looked into cramming an LS4 out of a wreck into a 1980s S10 in place of a 90° V6. The LS4 is a Gen IV with the 60° FWD V6 bellhousing bolt pattern and FWD motor mounts so it's really not straightforward to put one in a longitudinal engine bay. Not to mention that the ECM/TCM combo wouldn't like manual transmissions. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 03-31-2022 at 02:16 PM.