LT1 vs. Lt4
 

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

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

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

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

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/

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

LT1 vs LT4


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

650 hp as compared to 455 in the LT1!

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

:mad0260:OK...ok...so How is fuel fed to the LT2? I see no Injector ports!


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

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.

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

Or: $6346.36 in ‘extras’

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.

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