1low03gt at the Drags
08-31-2011, 06:59 PM
#21
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Join Date: Jan 2005
Location: Ontario
Posts: 17,778
mph is a function of hp.if your mph is down so is your hp for some reason.bad air or timing not quite what it should be.if you are not getting the mph now what do you hope to accomplish with the 4.30's?you will rev higher but it is not gauranteed you will go faster.quicker maybe but not faster.why is the hp down? that is the question...what did the tune say?was it dyno'd when it was tuned?do you have an air/fuel ratio gauge?if not get one!aem makes a nice one that is reasonable.i use one.
I'm shifting into fourth not to far past the traps, and i would think that the 4.30's would bring my GT closer to the top of 3rd gear crossing the traps, which is ideal.
I had my GT dyno tune not to long ago, maybe a month ago.
She made hp. Previous was 286.XX,and now it's 298......buuuuut....
I was having some issues holding idle after the first initial start of every run threwout that saturday we were out racing, and it got worse threw the day. After i got home, and washed the GT, i went to start it to park it in the garage, and it would not hold idle at all unless i kept my foot on the pedal. So sunday morning i went to solve the issue, and with past expirience with inlet tubes coming loose, causing the vehicle to stall, (which happens to my F 150 a couple of times a year due to the clamps coming loose).... that is the first place i went to check. Sure enough my clamps on my JLT were loose at the throttle body, and at the mass air, and lightly snug at the other two clamps.
So i tighten them up, and it held idle again. Maybe this could have caused some issues with the air fuel that day..... Don't know?!
All i know is i will go back out there to give it another shot LOL.
I do plan on getting a wideband air fuel ratio gauge, it's almost a must these days. My only issue is that my money tree gave me all it had this summer ......
but it will happen. Always seem to find the funds somewhere LOL.
08-31-2011, 08:14 PM
#22
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Join Date: Dec 2009
Location: sarnia,ont.
Posts: 338
top of third ?at the strip with the 4.30's? somebody's math is wrong partner.i can't see it for the life of me.i am in 4th at the stripe at 5500rpm with 4.10's with about the same size tire.what rpm are you turning at the stripe?i'm confused.
08-31-2011, 10:02 PM
#24
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Join Date: Dec 2009
Location: sarnia,ont.
Posts: 338
that's better jay.had my brain goin gaga,lol.i wish i had gone 4.30's myself.i am in the same situation with regards to still climbing after the stripe.
08-31-2011, 10:09 PM
#25
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Join Date: Jan 2005
Location: Ontario
Posts: 17,778
Yeah, sorry, i had a brain fart LMAO!!
It's a never ending game i tell you.
I know myself, i would enjoy the 4.30's a tad more. My cams don't really start working til above 3000 rpm or so. She's got some bottom end, but not like i think it should, or want.
There is a few guys i have talked with that moved to the 4.30's with the cammed 4.6L's, and they have no regrets thus far. So that just proves to me that my feeling, and thinking is right.
It's a never ending game i tell you.
I know myself, i would enjoy the 4.30's a tad more. My cams don't really start working til above 3000 rpm or so. She's got some bottom end, but not like i think it should, or want.
There is a few guys i have talked with that moved to the 4.30's with the cammed 4.6L's, and they have no regrets thus far. So that just proves to me that my feeling, and thinking is right.
09-01-2011, 08:53 PM
#28
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Join Date: Jan 2005
Location: Ontario
Posts: 17,778
You can for sure, but your set must be able to run the kind've rpms Man could you imagine..... 1st, and 2nd gear would be useless LMAO!!
I think next year for sure Gary i will get the swap done. Spent way to much already this year!!!
I think next year for sure Gary i will get the swap done. Spent way to much already this year!!!
