Which LSx to Build

[Bill71]

I am building a 71 Camaro for road course duty and a little street. I am at a point where I need to build an engine. I am considering a forged LS3 or 418 (I gave up on the SB2). It seems the 418 is a popular drag race engine but as I will be using the car will the engine wear out fast by running it 4000-7000 rpm every weekend? I read that GM used titanium rods in the 427 (4" stroke as well) for durability up to 7000 rpm. I just want to build it right the first time and not feel like tearing into it later looking for more power.

[raustinss]

Yes the ls7 does have titanium rods and intake valves....the ls3 is a great motor to base a engine off of and it's not a dry sump like the ls7
Good luck Ryan Austin

[71RS/SS396]

No matter what engine you choose if you're running it every weekend and twisting it hard regularly you'll likely need to freshen it up annually. I would also seriously consider a dry sump if you are going to run it on a road course regularly.

[Bill71]

No matter what engine you choose if you're running it every weekend and twisting it hard regularly you'll likely need to freshen it up annually. I would also seriously consider a dry sump if you are going to run it on a road course regularly.

I have been researching the dry sump option. Just having trouble determining which pan will fit the car.

[raustinss]

That's part of the problem there is too many company's gm included that sell "conversion " oils pans

[71RS/SS396]

I have been researching the dry sump option. Just having trouble determining which pan will fit the car.

I'm using the stock LS7 pan but I have a DSE subframe.