New Track Times

Your 185s are fine. Your mph is way low for the power. I'd look into what rpm you're trapping. You probably need more gear. How high are you supposed to shift this combo? It will say an rpm range on the fti cam sheet.

nice man

and hey i think you should you go ahead and get yourself some new heads.

and ill pick up those afrs!

seriously.

pm

You don't need new heads. Sounds like you need to rev it higher. And based off what the sheet is saying you definitely need more gear. You're probably crossing the traps in the 5200-5500 range where as you should be crossing around 6500. Looks like 4.30's are in your future.

I had that same problem with my old 92 LX with an 11:1 347. I had 373s in it and was only crossing the traps around 5500 with a pathetic 115 trap speed where I should have been crossing 6700ish . As recommended by Ed I swapped to 430s but never went back to the track. Car woulda went 118-120 with the swap.

Why are we complaining. That was a great run.

TFS owns AFR. It has been beat to death at another forum that I can't seem to post here.

Keith, no one is complaining, but given the combo it SHOULD be faster. I was trapping 105mph with my POS untouched GT40 heads and a crappy cam. Something is definitely wrong. If he doesn't want to spend on gears, a head swap would be a good change.

1.7 60's out of the hole is NOT just fine. You'd be surprised how much ET drops with a drop of .1 or .2 in the 60s.

I'm really not trying to put you down Venom, just offering some 'advice' on the situation. I do agree that you're shifting too low. If your peak power is at 6200 rpm, you should be shifting higher so when it falls, you'll fall in the upper rpm range. If you're valve train is setup correctly, you shouldn't fear shifting it at 6500+. Just my opinion. But don't take this to heart, talk to Ed, he should have advice on this situation.

Based on your graph:




You need to shift it higher. I'd start at 6400 and go from there. Try 6200 and then 6600 and see where the incremental go. Based on your tach comment here are some things I would do:

-Forget the tach and shift it where it feels right on one pass. As soon as you start to feel the car fall off shift it. You will be over shifting it at this point but it may show some gains. Again, look at the incremental, 60', 330', 1/8th ET and MPH, 1000', and 1/4 ET and MPH.

-What is your rev limiter set at? If you can change its settings, set it at 6500 and run each gear to the limiter, as soon as you touch it shift it as fast as you can.

Assuming you have a 26" tall tire, you are only at around 5200 with a 106mph trap speed. That will leave a LOT of time and ET on the table. Here's a good table to look at to judge your RPM based on trap speed.

http://www.mustangworks.com/cgi-bin/analyzer.cgi

If you want times that are indicative of what that combo is capable of, you need more gear plain and simple. Shifting it higher might help mask some of the lack of gear problems as they should help increase the trap speed in and of themselves.

A head swap is a waste of time and money IMO. I made 380rwhp with my 8.9:1 compression 331 with AFR 165's, and I'm trapping 121mph since swapping on my 185 comps. I run 26" tall tires and 4.10 gears.

I assume you are running the car at Epping and if that is the case, you have elevation and track conditions on your side so that isn't the problem.

If you want times that are indicative of what that combo is capable of, you need more gear plain and simple. Shifting it higher might help mask some of the lack of gear problems as they should help increase the trap speed in and of themselves.

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Yup

A head swap is a waste of time and money IMO.

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and yep Just like I stated earlier. Adding a larger head on your current set up will only make the lack of gear problem even worse.