i have a 99 formula M6 car and am getting the engine rebuilt..currently she has a lunati stick in her 234./236 .050 .544/.545 112 lsa cam she is getting mahle forged pistons, eagle forged H beam rods, polishing the crank, ported LS6 oil pump, comp springs, crane lifters, crane hardened pushrods, ls6 intake, 80 mm bbk tb, msd wires, ngk plugs, 853 heads ( 5 angle valve job, new locks, guides, retainers) clevite 77 bearings through out, SLP LT's , ORy Loudmouth w/ the catalitic vconverter delete, ram VDS Clutch.......whew... her current #'s were 380 rwhp / 350 tq...not going to cut it lol...i WANT MORE!!!...

so what cam will get me there...?

 

Something along the lines of a T-Rex, MS4 or any other cam in the 240+ duration range should get it done.

 

413whp here with minor tuning with 231/237cam. If i added fast 90/90 and a electric water pump and a new tune im sure i would b4 over 420whp

 

sponsors feel free to chime in!

 

how much do they go for used?

 

412 rwhp for me with LG's G5x4, stock 853heads and bottom end.

 

stock bobo 853 heads and bottom end here to with 111,000 miles

 

Are your 853 heads ported?

 

MS4 cam

 

Check my sig...


.

 

Stock 99 heads with 111,000 miles! Only thing that is not stock are the valve springs and push rods. They are not ported.

 

See my sig, made 400 on a dynojet with 853 heads. A set of TSP heads will get you 420+

 

Just go find you a happy dyno.Thats how you get the big interweb hero numbers!

 

The issue your going to run into with the donkey dick cams with stock comp and reletivly stock heads is that its so peaky and the under curve power suffers to the point where in the 1/4 mile that a smaller cam 22x/23x cam will do the same with less power.

Depending on the lobes used there has been plenty of cams doing 400-420 rwhp with a 230/236 int/exh on a 112 LSA

Vengence VRx3 and VRx4's doing 390-405 in a m6/10 bolt 2002 cars and VRx5 has done 420's and have much better low end/under curve power.

Something to think about.

 

i have heard the T-RED and the MS4 cam and a Vindicator will do it too...my 853 heads have a 5 angle valve job, new locks, guides, and retainers, and i think that with the forged pistons i will be able to run a bigger cam w/ out PtV issues...

 

and the only people i will take my car to tune is vengeance racing in cummings ga...nothing personal mind you but i know em and trust em..