Just trying to help out... PM sent. Im not just guessing, ive built ALOT of similar combos and know what works.

 

Id be a little disappointed...since I see Vengeance & Virginia Speed making 540+ out of there fresh bottom end Stroker motors. And I would be looking into what is holding the motor back from making 540-550. You definately have the parts & CR to make those numbers....

I agree with CalSpeed though, I think a better matched cam would get you where you should be.

 

It is what it is. Don't let the nay sayers talk ****. There is always room for improvement. If your car is a daily driver then its making good power in a usable rpm range, and should stomp many cars you come up against. If it's a race car the power band is a little low. The power it makes is good. Oh 30 ta what car do you have? I've found that any shop can build high power cars if your wallets fat enough. If its not then you get the ok build with the average power, not the magazine build or internet warrior car. Oh and all this we have the fastest original air in the tires builds is crap. Go race a stocker or super stocker and get your *** handed to U. Sorry for hi jacking your post.

 

I might look into changing the camshaft

The one suggested to me is even bigger, Im kind on the fence with the streetability with this cam as it is.

Its a 99% of the time DD. Its not an all out power setup.

 

Call Ed Curtis at FTI he will help you make a good decision. It's not about the size of the cam.

 

These dyno war threads make me giggle. Take it to the track and see where your mph ends up, don't worry so much about how fast you're going standing still......I think that's a nice combo and is likely a blast on the street! Not a max effort setup for sure with a shelf cam and 5800rpm power peak, but so what?

 

Im not worried, never was. I like the combo also, The track will tell all, I might get out to the track this weekend. I dont have slicks so its not going to be a max effort strip run just yet.

 

I agree drive it. Thinking more about the low rev's and that cam do you think the valves are floating and limiting rpm?

 

Talked with Mike @ TEA... and that could be a possibility.

I am Going to recheck the Preload with the current push rod length, and see where it is.

The power # isnt the part that has me questioning anything, Its the early peak.

 

I think you are on the right track now.

 

if it does turn out to be a valve float issue then its most likely costing you some HP as well, though im sure youre aware of that and i aint saying anything new.

 

1LEJOHN-I can daily drive my car if i choose to and it run's 10's n/a. I think it's just that the tfs heads usually do make more power. My boys ls1 383 with tfs 215 heads made over 500hp and 480tq on the same dyno i'm on. Nobody is telling him he have a crap car(atleast i'm not)but for those heads that cost and compression,he should get more for his money. 30th t.a didn't mean anything,he was just stating what we all have seen,he should get more for the cash spent on his motor.
NYSBAD8-If your happy thats all that counts. good luck to ya.

 

Perhaps he should get more, but for a street car, that has a VERY nice power curve, and should be a TON of fun to drive around (won't have to ring the engine's neck - this coming from someone who's engine peaks at ~7k rpm). Won't be bad at the track, either.

Good luck.

 

The power in the car is awesome, 3100lb car, Mn12 t-56 with 3.90's

Its a very traction limited situation untill 4th gear even with the 335 rubber.


But the problem is where the power peaks at 5800rpm it should still be climbing till about 6300-6400 rpm then start to drop off.


The following three things have been mentioned-

The camshaft has very aggressive ramp rates and lobes causing valvetrain instability in the High rpm range-

Incorrect pushrod length-

Valve Float-

I am going to check the lifter preload soon, and see if its where it needs to be.

If it is.. I might look into a diffrent camshaft.

 

Nice #'s man but I would have gotten a custom cam cut for those heads on that motor. You could probably gain 15+ more H.P.

 

so do dynojets and dynapacks show about comparable power even though they read it differently??

 

If you want a good under the curve cam for that motor with those heads I would have done something like a 238/242 612/612@114LSA or if you want to go a little bigger you go with a 242/248 646/612@114-112LSA.. Get intouch with patrick G or call Allan Futral, etc and have them custom cut you a cam.

 

A man that knows his **** right there!! A lot of folks on this site have never heard of Ed Curtis. That's who I will probably get with to spec my cam for me.

 

Yes...

 

Way to small... I am working with a few people on a custom cam spec. Smaller hasnt been suggested yet.