View Thread: Northstar or LS1


Carlos Carrera
What GM must do?
keep the LS1; 6 (OHV) engines for the next Vette (C6) and performance cars.
or use the new Northstar engine (DOHC)?

Arthur Dent
There nothing wrong with the LS1. Keep it. The Northstar while nice is just heavier and bulkier.

Carlos Carrera
Originally posted by Arthur Dent
There nothing wrong with the LS1. Keep it. The Northstar while nice is just heavier and bulkier.

is heavier?
who much the LS1 weights?

Arthur Dent
Not sure of the exact numbers but the DOHC engines have much more complex valvetrains making the engines wider, taller, and heavier.

FYRHWK1
475 -500 lb for the LS1, it is lighter the the northstar but by how much I dont know. Keep the LS1, it outperforms the northstar in everything except RPM capability, it's only in the XLr for prestige, people have a stigma about DOHC.

silverTA2002
I'd prefer neither for the next vette. Those have been around long enough.

It's time for a newer, better, and more powerful engine.

Add some sorta variable timing and displacement on demand, still a large v8, all alluminum, with a wide, smooth tq curve.

380 hp base, 425 Z06.

Enano Siniestro
The LS1 is not that old, being out only since 1997.

silverTA2002
It's not that old, but 7 years of production, and it's relatively "low tech."

A great engine (I know from experience ;)) but it's just time for something new IMO. Who'd complain about something better?

Enano Siniestro
GM was testing a block with two cams in-the-block, to provide for variable valve timing while keeping the compact dimensions of an OHV V8 engine. Maybe the C6 will use something similar.

Arthur Dent
Opel used to make cam in block motors back in the 60s. Most of the OHC features and keeps the motor height reasonable.

911GT2
The C6 supposedly will have variable valve timing with on OHV setup. I'd love to see that.