Finally Did The Heads. Anxious About The Results.

[MPRTKLR]

I have finally decided to do the heads in my cam and juice Z. I decided to go with ported, polished, and milled AFR 205's. It currently has the TTP V.3 cam, along with a NX 100 shot. With this setup, it previously dyno'd at 520 whp, @ 5800 rpms. I was originally shutting the juice off early, as I thought it would be safer. I became a little tired of the car falling off so early, so I am now having the window switch bumped to 6400 rpms. What kind of numbers do you think Ill see? Since its going through 3.90 gears, Im hoping for 575 whp, now that the juice is staying on longer. I just dropped the car off today, and already cant wait to have it back.

[Dr.Ron]

Good luck & hold on even tighter...if you get any traction!!
Ron

[MPRTKLR]

Thanks Ron. Im guessing my Nittos arent going to be up to the challenge, but I guess Ill find out soon enough. If I was as good a driver as you, this setup would probably get me into the low low tens. Hopefully I can manage a 10 anything

[Jed Z06]

MPRTKLR:

Congrats on the new heads!
Seems like you are going to REALLY HAVE TO HOLD ON!
NX is addicting isn't it?

How do you figure your whp? from rwhp?
Just curious, some people told me 15-20% from the whp is about what you rwhp would be?

I will be looking at those heads as well, in the near term, about how much were the heads, the way you got them?

Thanks!

[MPRTKLR]

Jed, whp and rwhp are the same thing. They just stand for wheel horsepower and rear-wheel horsepower, but Im assuming that you meant the difference between flywheel horsepower and whp. There is about a 15% drivetrain loss through our cars, but that isnt exactly scientific, and is different for different cars, setups, ect. The wheel horsepower is all that really matters, and that is the number that is generated by the chasis dyno. They also make engine dynos to calculate how much horsepower an engine makes, if you had it out of a car. As far as the heads, contact your local supporting vendor on the left. I got mine along with some other odds and ends, installed and tuned, so it may vary. I believe you should expect to pay around $3k if you wanted them ported, polished, and milled like mine will be, then add on labor and tuning. I would think if you added heads to your setup, depending on how aggressive your cam is, the 150 shot may need some fuel upgrades. I have my shot at only 100, but I have a feeling my cam is a good bit larger than yours. Let me know if you have any other questions