did you miss the 1000hp Yukon Denali thread? that kind of power's not possible out of a LQ4

 

never did read that, but I'll see if I can find it. 900rw is vary possible with a late tho.

 

Power pk was actually around 5500rpm but held on all the way to 67~6800. Converter was locked at first but trans was acting weird think I had a table out of whack. The way I locked it in 3rd was kinda crude lol

I guess all dyno's and setups are different. This truck runs 6.2@112mph in the 1/8 with this power. Numbers jive right on with what it ran at the track IMO. It's showing around 1100~1150FWHP to run 140mph so 900 at the tire is right inline. Power under the curve is what shows at the track. What's crazy is the 16psi 773hp street tune goes 9.90's at 134~135mph.

 

Thanks for the good words guys
I think there is 50 or so hp left in it by uncapping the exh Im only running thru a 3.5' muffler, and exh pipe all the way to rear axle with wg dumping into exh system. Had a 10-12lb spring in wg and 20psi is all it would do, I think with a stiffer spring, uncapping exhaust at 4'' dp, and upgrading intercooler to a 4 or 5'' core 1000hp or close could be attainable. Still running my little 3'' core I/C rated at 600 fwhp lol

 

Hurry up and get a better cold side!!

 

How much did you have to scale the tune to run 20lbs of boost?

 

Same tune I race with on 20 psi but it was a nice lean 12.3~12.9:1 on dyno..

 

But that cam is way to small to make any good HP...

 

Lol it is prob holding me up a little at this point, but just goes to show you don't need some big donky dick cam to make decent power. I designed this cam for the 500-700 hp guys with the small turbos but it can still hang pretty good with the higher hp if it needs too. Never planned on pushing this thing this far or I would have gone with the 218, or 221 cam. Still can't complain about 9's and 900hp below 6k rpm. The valvesprings in this engine are light and worn out but it doesn't care lol... Also stock pushrods in this engine.

 

Your truck never ceases to amaze the **** outta me. This is why we are here...to see the impossible