Where can you get a LQ4 at for that price ?
LQ4 is the 6.0 345 hp engine correct ?
I would think that the LS6 405 hp would still have more power with about a 125 shot ?
You think they can get 55 hp out of those patroit heads ?

 

The lq4 is the standard 300hp 6.0

the lq9 is the higher compression 345hp 6.0

 

O gotcha thank you.

Those heads would have to produce 105 hp then to make 405 hp (Parish)?

 

first, dont believe those factory numbers, they prety much just make up those numbers, it is all marketing.

A heads and cam lq4 would kill a stock ls6. call me crazy but i think a cam only lq4 would be quicker than a stock ls6.

here are a few of my dyno numbers with an lq4, all with pump gas and cat back pulled(or cut out). thru a 4l80e and tcase and 31" tall tires.

 

322rwhp with a cam only lq4 thru a power robbing driveline seems prety good to me. figureing a 20% driveline loss and that would be over 400fwhp.

the 6.0 heads are the same casting as the ls6 heads other than chamber size, then add in a few cubes but drop some compresion and i think they would be real close to the same numbers.

how much money do you have to spend? for $5000 you could build one heck of a motor, forget about the $5400 ls6