400hp isnt that hard... Not impossible... Just have to quit being a baby..... and expect things to break..

3.4L
13.5:1 piston's
#3 grind from HR
then everything else you can do....

 

"3.4L
13.5:1 piston's
#3 grind from HR
then everything else you can do...."

Hmm...you'll need a tad more. We have been tweaking the NA for a little bit. Our mark to date is 260 at the wheels. this was a 3.1 liter, 14.5:1 compression, Custom JE pistons, Custom Cam, Masive headwork ( 8 valve), Custom balanced rods, Full race prep 3.0 crank (lightened, balanced, crossdrill, knife edged...all the stuff), Full race clutch, aluminum this and that, no balance shafts, 111 octane leaded fuel, MAF kit, adjustable fuel pressure, MSDS headers, Port matched intake manifold, total seal piston rings, stock DME and ignition...and more.

I doubt your going to make another 140hp with the addition of .2 liters. Might step up to a 16 valve head with very trick cams, super lightweight solid lifter assembly, high revs. But this still has only been guessed to produce in the area of 320hp at the wheels running perfect.

400 is a big mark, and will it last? We blew our pistons with compression. It was very fast but we went above what we KNEW was a safe build, trying to see how far we could take it. Hell, in one POC race this year, we start DFL in the Cup race, and by 4 laps we had gained nearly 3/4 of the total field, then the engine failed.

But its tuning and testing like this on our cars that show us the limits and what needs to be improved.

Take Care

 

Here we go
14.5:1
3.4ltr motor with fully machined block, ChMo matrix cylinders, fully chased, JE Lightweight forged pistons, Pauter ChMo forged rods, Stage III 3.0 ltr crank with perp drill, Stage II 16V cylinder head with o-rings. All new gaskets, seals, bearings, bushings, rings, sealers and compounds. HR Custom Copper competition head gasket, Raceware head stud kit, Raceware main stud kit, HR Vandeminium spring kit, HR Stage III cams, and Factory new lifters, Copper Beryllium Valve Seats, Port match head to manifold, Gun drilled rods & bearings. Massair flow sensor's with hardpipe's
SFR headers, SFR exaust. MSD igniton, 10.4MM race wires, Moddifed DME, moddifed intake manifold.

 

Hey John, Want to test it? lol, n-m I am poor collage student
Maybe in a few year's.

 

Fishey, I am already Johns guinea pig (when i get money)... LOL.... my 16V will be a monster to be reckoned with one day!!! MUAHAHAHA....

 

Hence, the term NON-TURBO.

 

We're not starting back with the MUAHAHAHAHA...... MUAHAHAHA

marksprotcts.... shiny!

 

Youre all forgetting the easy way to make 400hp, Nitrous and lots of it. The 400hp might only be there for split second, but your rods will find their way out.