Poll: LS3 or LS7 vs. GM Crate Ram Jet 502

[Stang's Bane]

Originally Posted by deuce_454

i dont agree... if you want an ls7 for the bragging rights, by all means buy it.. but when you can get a built 427 ls3, that makes more power, costs less money and comes with the cam of your choice its just a waste of money.. the second you open the ls7 to change cam, the warranty is gone....

a 615hp 427 ls3 that comes with absolutely everything including a full tune, VVT computer and a valid warranty costs 13k. a 505hp ls7 is much more money just for the engine.. and when you add cam, harness, computer, dynotime dry sump tanks and hoses and gaskets etc. you are well into the 17 grand range, if not more... thats 4000 dollars wasted on the ls-7 name (and a voided GM warranty)... stupid in my book...

I assume you are talking about the Mast Motorsports ls3 here. I haven't seen the graphs's supporting their 615 hp claims while retaining the VVT, I am not saying they are not true, but I haven't seen any evidence supporting the claims.

FWIW, the ultimate N/A power potential of a ls7 427 is much higher than a ls3 based 427.