ya and also the original Gt-40 iron heads are the Gt-40 P heads. They put them on the explorers and mustangs after 1994.

Sicy - The more I think about it, I take back some of that about the rockers making all that power. These runs were made about 4 years ago, so I am trying to remember details :).

As I think about it, the air temperature was much cooler on the day we made the runs after the rocker install than it had been previously. So, the cooler air accounted for part of that power gain also.

Sorry if I am throwing anyone off. I am not trying to mislead anyone. Like I said, the graphs are back home and the runs were 4 years ago, so I am trying to recall all the details from memory :(.

I don't believe this is the case. Check this out.

Hey, for all the old MW people...I just realized Kell wrote that article I linked to :). He was always full of knowledge. I miss having him around MW.

SIMI darn it!
 

Who you calling a "Sicy"?! It's Simi...not sissy. :p Yeah, the colder air can definitely make a difference on dyno day. Still interesting though... Nice to hear the rockers gave you a little extra power though. I too run the 1.72 roller rockers to help give my B-303 a little more oomph. I've yet to get mine dynoed though....but plan on it sometime in the future. I guestimate that I'm pushing around 320hp...or somewhere pretty close to that.

Re: SIMI darn it!
 

Damn....... sorry, my brain is fried. I had two exams today and was jumping on the net in between studying.

As far as the power of your car goes, I'll give you this. The other car at the dyno I was talking about was making around 270 hp,and running 12.6 at the track.

So, by that I would guess you are in the 320 range without the juice, which is about what you thought. 270 at the wheels is around 330 at the crank, depending upon what you use as a loss percentage.

I am sorry to say my friend but I was wrong on that call :D

But they are explorer heads

No problem. I learn something new here everday too:D !

people on other sites are saying like only 270-300 rwhp some are saying 330-350 . I wish I could just get someone who did exactly this to there motor