4.7 final drive 1/4 mile, need to shift into 5th?
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From: blavica
Can't really specifically answer that one but I wouldn't think so because I just shift into 4th on my stock FD. as I cross the line with my mad tight blink of the flashers 
But seriously I doubt it.
But seriously I doubt it.
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From: Southern California, U.S.A.
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (bootlegtrader)
Depends on your redline and your mph when you go through the traps.
And I don't at 113 with a 9,200 fuel cut.
And I don't at 113 with a 9,200 fuel cut.
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From: Chicago
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (b19coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">Depends on your redline and your mph when you go through the traps.</TD></TR></TABLE>
Yes, exactly.
For example, a bone stock USM ITR (with 4.4 stock FD) with a stock 8400 RPM redline would hit redline in fourth gear, and need to upshift, at 117.6 mph.
If you're talking about the JDM 4.785 FD that otherwise has USM stock gears, then it would hit 8400 RPM at 117.6 * 4.4 / 4.785 = 108.2 mph. Different redline, different fourth gear ratio, different FD? Just multiply and divide to find the answer.
Yes, exactly.
For example, a bone stock USM ITR (with 4.4 stock FD) with a stock 8400 RPM redline would hit redline in fourth gear, and need to upshift, at 117.6 mph.
If you're talking about the JDM 4.785 FD that otherwise has USM stock gears, then it would hit 8400 RPM at 117.6 * 4.4 / 4.785 = 108.2 mph. Different redline, different fourth gear ratio, different FD? Just multiply and divide to find the answer.
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From: NOR CAL
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (b19coupe)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe »</TD></TR><TR><TD CLASS="quote">Depends on your redline and your mph when you go through the traps.
And I don't at 113 with a 9,200 fuel cut.</TD></TR></TABLE>
And slick/tire diameter makes a difference......
And I don't at 113 with a 9,200 fuel cut.</TD></TR></TABLE>
And slick/tire diameter makes a difference......
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From: usa
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (skunked)
cool. thanks guys. i saw on either the forced induction or all motor forum, that some people were at 7800 rpms in forth going around 115. i have the 4.4 but have not been to the track yet.
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From: Browns Summit, NC, USA
Re: (Black R)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Black R »</TD></TR><TR><TD CLASS="quote">no.
With a 4.9 final, I'm still in 4th..... </TD></TR></TABLE>
you weren't launching right....
with 4.785 final 8500 rpms
i would bounce rev limiter last 100-200 feet....was faster to do that than to shift into 5th
with 4.785 final 7200 rpms rev limiter
i would be in 5th in the 1/8 mile!!!!!!!
With a 4.9 final, I'm still in 4th..... </TD></TR></TABLE>
you weren't launching right....
with 4.785 final 8500 rpms
i would bounce rev limiter last 100-200 feet....was faster to do that than to shift into 5th
with 4.785 final 7200 rpms rev limiter
i would be in 5th in the 1/8 mile!!!!!!!
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From: Chucktown, SC
Re: (chad)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad »</TD></TR><TR><TD CLASS="quote">
you weren't launching right....
with 4.785 final 8500 rpms
i would bounce rev limiter last 100-200 feet....was faster to do that than to shift into 5th
with 4.785 final 7200 rpms rev limiter
i would be in 5th in the 1/8 mile!!!!!!!</TD></TR></TABLE>
Chad thats over a 90mph trap in the eighth. I dunno about that and an LS. I was in 4th in the eighth though
you weren't launching right....
with 4.785 final 8500 rpms
i would bounce rev limiter last 100-200 feet....was faster to do that than to shift into 5th
with 4.785 final 7200 rpms rev limiter
i would be in 5th in the 1/8 mile!!!!!!!</TD></TR></TABLE>
Chad thats over a 90mph trap in the eighth. I dunno about that and an LS. I was in 4th in the eighth though
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From: Chicago
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (skunked)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked »</TD></TR><TR><TD CLASS="quote">And slick/tire diameter makes a difference......</TD></TR></TABLE>
The tire diameter doesn't affect the relationship between the RPMs (redline) and the speed indicated on the speedometer. However, it affects the speedometer error (the difference between the indicated speed and the actual speed).
The tire diameter doesn't affect the relationship between the RPMs (redline) and the speed indicated on the speedometer. However, it affects the speedometer error (the difference between the indicated speed and the actual speed).
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From: NOR CAL
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (nsxtasy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxtasy »</TD></TR><TR><TD CLASS="quote">
The tire diameter doesn't affect the relationship between the RPMs (redline) and the speed indicated on the speedometer. However, it affects the speedometer error (the difference between the indicated speed and the actual speed).
</TD></TR></TABLE>
I was simply saying tire size will also dictate what rpm you are at going through the traps just like your gear ratios do. If you are in a situation where you are having to shift to 5th before the traps, go to a bigger tire and you won't need 5th as long as you have the power for the larger tire.
I don't know about you but I look at the ET slip for MPH not my speedometer........
The tire diameter doesn't affect the relationship between the RPMs (redline) and the speed indicated on the speedometer. However, it affects the speedometer error (the difference between the indicated speed and the actual speed).
</TD></TR></TABLE>
I was simply saying tire size will also dictate what rpm you are at going through the traps just like your gear ratios do. If you are in a situation where you are having to shift to 5th before the traps, go to a bigger tire and you won't need 5th as long as you have the power for the larger tire.
I don't know about you but I look at the ET slip for MPH not my speedometer........
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From: Chicago
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (skunked)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked »</TD></TR><TR><TD CLASS="quote">I was simply saying tire size will also dictate what rpm you are at going through the traps just like your gear ratios do.</TD></TR></TABLE>
Yes, I realize that.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked »</TD></TR><TR><TD CLASS="quote">If you are in a situation where you are having to shift to 5th before the traps, go to a bigger tire and you won't need 5th as long as you have the power for the larger tire.</TD></TR></TABLE>
Sure, it's just like getting a taller FD.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked »</TD></TR><TR><TD CLASS="quote">I don't know about you but I look at the ET slip for MPH not my speedometer........</TD></TR></TABLE>
Yes, but when you're deciding when to shift, you're probably looking at your tach...
Yes, I realize that.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked »</TD></TR><TR><TD CLASS="quote">If you are in a situation where you are having to shift to 5th before the traps, go to a bigger tire and you won't need 5th as long as you have the power for the larger tire.</TD></TR></TABLE>
Sure, it's just like getting a taller FD.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skunked »</TD></TR><TR><TD CLASS="quote">I don't know about you but I look at the ET slip for MPH not my speedometer........</TD></TR></TABLE>
Yes, but when you're deciding when to shift, you're probably looking at your tach...
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From: NOR CAL
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (nsxtasy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxtasy »</TD></TR><TR><TD CLASS="quote">
Yes, but when you're deciding when to shift, you're probably looking at your tach...
</TD></TR></TABLE>
Right, Tach not speedometer.
Yes, but when you're deciding when to shift, you're probably looking at your tach...
</TD></TR></TABLE>
Right, Tach not speedometer.
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From: Atlantis
Re: (chad)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad »</TD></TR><TR><TD CLASS="quote">you weren't launching right....
with 4.785 final 8500 rpms
i would bounce rev limiter last 100-200 feet....was faster to do that than to shift into 5th
with 4.785 final 7200 rpms rev limiter
i would be in 5th in the 1/8 mile!!!!!!!</TD></TR></TABLE>
.....you never had an itr, so you're not even allowed to post here.
What was your setup Chad? Was that with the bottle?
with 4.785 final 8500 rpms
i would bounce rev limiter last 100-200 feet....was faster to do that than to shift into 5th
with 4.785 final 7200 rpms rev limiter
i would be in 5th in the 1/8 mile!!!!!!!</TD></TR></TABLE>
.....you never had an itr, so you're not even allowed to post here.
What was your setup Chad? Was that with the bottle?
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From: Atlantis
Re: 4.7 final drive 1/4 mile, need to shift into 5th? (IN VTEC)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IN VTEC »</TD></TR><TR><TD CLASS="quote">113mph, wow. I only wish I could trap that high.</TD></TR></TABLE>
.....perhaps he's reply back with what size tyre and tranny he's using.
.....perhaps he's reply back with what size tyre and tranny he's using.
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