LT1 vs. Lt4

Monroe · 04-30-2021, 10:53 PM

Whats the difference between the LT1 and LT4 other than the addition of the Super Charger?

avalonandl · 04-30-2021, 11:13 PM

LT4 has forged pistons, lower compression, and HD oil pump.

Gunkk · 04-30-2021, 11:15 PM

LT4 has upgraded:
Forged crank
Forged pistons
Powder metallurgy rods
Cam (lobed for blower)
LP Fuel pump
HP fuel pump
Injectors

Monroe · 04-30-2021, 11:55 PM

OK...so whats the difference in the LT2?

Puddin · 05-01-2021, 01:03 AM

Quote:

Originally Posted by avalonandl

LT4 has forged pistons, lower compression, and HD oil pump.

The Lt1 and Lt4 share the same oil pump. Both are manufactured by melling but they're assembled at different plants. Here is a link OP about some of the differences between the Lt2 vs Lt1. https://www.google.com/amp/s/gmautho...m-the-lt1/amp/

laynlo15 · 05-01-2021, 07:24 AM

https://www.onallcylinders.com/2018/...am-specs-more/
https://www.onallcylinders.com/2018/...le%20%28E85%29.
Here are the Technical Specs for both.

COKen · 05-01-2021, 07:45 AM

LT1 vs LT4

https://www.grandsportregistry.com/lt1vslt4.htm

LT4Greg · 05-01-2021, 07:47 AM

650 hp as compared to 455 in the LT1!

arpad_m · 05-01-2021, 08:25 AM

Quote:

Originally Posted by COKen

LT1 vs LT4

https://www.grandsportregistry.com/lt1vslt4.htm

Those are the old 1996 LTx engines. Laynlo15 provided the correct references.

Monroe · 05-01-2021, 01:17 PM

OK...ok...so How is fuel fed to the LT2? I see no Injector ports!

https://gmauthority.com/blog/2019/11...-from-the-lt1/

Puddin · 05-01-2021, 02:38 PM

It's direct injection just like the Lt1 and Lt4. The only gm motor that has a dual setup is the Lt5 in the Zr1. The injectors are going to be underneath the intake manifold with a high pressure fuel pump feeding them from the head.

Trak-Toy · 05-01-2021, 03:26 PM

LT1 wet sump crate engine: $8471.40
LT4 wet sump crate engine: $14,817.76

Or: $6346.36 in ‘extras’

s346k · 05-01-2021, 04:07 PM

taking ownership of an LT4 equipped vehicle immediately boosts your credit score and home value. that's what i was told anyway.

i felt the beginnings of a mullet when i bought my ss 1LE. so i went with it.

Idaho2018GTPremium · 05-01-2021, 04:21 PM

Quote:

Originally Posted by Puddin

The Lt1 and Lt4 share the same oil pump. Both are manufactured by melling but they're assembled at different plants. Here is a link OP about some of the differences between the Lt2 vs Lt1. https://www.google.com/amp/s/gmautho...m-the-lt1/amp/

Wrong. The LT4 has an active displacement oil pump that is unique to the LT4.

04-30-2021, 10:53 PM	#1
Monroe Banned Drives: Chevrolet Join Date: Apr 2021 Location: Earth Posts: 92	LT1 vs. Lt4 Whats the difference between the LT1 and LT4 other than the addition of the Super Charger?

04-30-2021, 11:13 PM	#2
avalonandl Drives: 2019 ZL-1 Join Date: Feb 2009 Location: Troy, MI & Naples, FL Posts: 2,019	LT4 has forged pistons, lower compression, and HD oil pump. __________________ 2019 ZL-1 Acquired 4/23/21 at 6300 miles. Riverside Blue, A10, PDR. Traded in 2017 2SS with 6M and 32k miles. Continental Extreme Contact Sports. Now has 10,000 miles... 2012 Yukon XL Denali w/ 6.2 AWD

04-30-2021, 11:55 PM	#4
Monroe Banned Drives: Chevrolet Join Date: Apr 2021 Location: Earth Posts: 92	OK...so whats the difference in the LT2? Last edited by Monroe; 04-30-2021 at 11:56 PM. Reason: jb

05-01-2021, 07:24 AM	#6
laynlo15 Drives: 2022 Lt1 A10 Join Date: Nov 2015 Location: clark, mo Posts: 8,860	https://www.onallcylinders.com/2018/...am-specs-more/ https://www.onallcylinders.com/2018/...le%20%28E85%29. Here are the Technical Specs for both. __________________ 2022 Lt1 6.2 A10, Maggie 2300, THPSI Port Inj/10 rib, Rotofab, E, Nickey, SCOL, Griptech, RC Bandits, Hoosiers/MT 9.80@142.96 1.44 60ft, 6.34@112 707/669 RWHP/TRQ. 16SS Maggie 2650 9.41@147 1.35 60ft, 5.99@119. 16 C7 A8 10.90@128 Bolt on stuff

05-01-2021, 07:45 AM	#7
COKen Drives: '21 Camao SS, BMW 435i, M Roadster Join Date: Oct 2020 Location: Colorado Posts: 63	LT1 vs LT4 https://www.grandsportregistry.com/lt1vslt4.htm __________________ 2021 Camaro SS Riverside Blue Metallic 2014 435i M-Sport, Mineral Gray, Black Dakota Leather, Driver Asst Pkg, Prem Pkg, Tech Pkg, 8 Spd Sport AT, Heated Front Seats, ACC, BMW M Perf Tune w/MPE, BMW LSD, BBS CH. 2002 M Roadster, Steel Gray Metailic, Gray Nappa Leather, Steel Gray Metailic HT, TC Kline DA Shocks & Camber Plates, w/H&R Springs, Stromung Exhaust, SSR Type C.

04-30-2021, 11:15 PM	#3
Gunkk Thank you Al Oppenheiser! Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017 Location: Sarasota, FL Posts: 4,975 View My Garage	LT4 has upgraded: Forged crank Forged pistons Powder metallurgy rods Cam (lobed for blower) LP Fuel pump HP fuel pump Injectors

05-01-2021, 07:47 AM	#8
LT4Greg Drives: 2017 Camaro ZL1 Coupe Join Date: May 2016 Location: Georgia Posts: 5,813	650 hp as compared to 455 in the LT1! __________________ ZL1 Coupe, PDR, Exposed carbon fiber hood insert, My Link with Nav, M6 6 speed and Silver Ice Metallic. Mods done: ceramic window tint, GM Accessories Camaro floor mats and Roto-Fab CAI.

05-01-2021, 01:17 PM	#10
Monroe Banned Drives: Chevrolet Join Date: Apr 2021 Location: Earth Posts: 92	OK...ok...so How is fuel fed to the LT2? I see no Injector ports! https://gmauthority.com/blog/2019/11...-from-the-lt1/ Last edited by Monroe; 05-01-2021 at 01:18 PM. Reason: k

05-01-2021, 02:38 PM	#11
Puddin Drives: 2016 Camaro 2SS Join Date: Apr 2018 Location: Central Texas Posts: 1,011	It's direct injection just like the Lt1 and Lt4. The only gm motor that has a dual setup is the Lt5 in the Zr1. The injectors are going to be underneath the intake manifold with a high pressure fuel pump feeding them from the head.

05-01-2021, 03:26 PM	#12
Trak-Toy Drives: 2023 SS 1LE Join Date: Mar 2020 Location: Virginia Posts: 270	LT1 wet sump crate engine: $8471.40 LT4 wet sump crate engine: $14,817.76 Or: $6346.36 in ‘extras’

05-01-2021, 04:07 PM	#13
s346k Drives: like an old lady Join Date: Jun 2012 Location: indiana Posts: 2,395	taking ownership of an LT4 equipped vehicle immediately boosts your credit score and home value. that's what i was told anyway. i felt the beginnings of a mullet when i bought my ss 1LE. so i went with it. __________________ 2016+ camaro: everyone’s first car

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