is there really a big difference in gear ratio...would a longer gear ratio slow a car down???

 

Longer gear ration = more top speed
Shorter = Quicker acceleration

 

so with a dx tranny on a z6 it would accelerate slow?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k12ayz1e &raquo;</TD></TR><TR><TD CLASS="quote">so with a dx tranny on a z6 it would accelerate slow?</TD></TR></TABLE>

Yup slower than what a SI/EX tranny will make it

 

how much slower?

 

.7 seconds in the 1/4 mile for me

went from a 15.5 to a 16.2, just by switching trannies....same 60 foot, etc

88 mph vs 81

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emerika &raquo;</TD></TR><TR><TD CLASS="quote">.7 seconds in the 1/4 mile for me

went from a 15.5 to a 16.2, just by switching trannies....same 60 foot, etc

88 mph vs 81 </TD></TR></TABLE>

damn.. I am running a 16.1 @ 84.7 with my DX tranny. what could i expect w/ the EX/SI tranny??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Typesi2nv &raquo;</TD></TR><TR><TD CLASS="quote">

damn.. I am running a 16.1 @ 84.7 with my DX tranny. what could i expect w/ the EX/SI tranny?? </TD></TR></TABLE>

probably hgih 15's....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emerika &raquo;</TD></TR><TR><TD CLASS="quote">

probably hgih 15's....</TD></TR></TABLE>

hurt your time 7 tenths and might help me only 2-3 tenths? jk.

I've heard around a half second difference

 

Well after i ran the car I put a pyr stage 3 cam in it, 60mm TB w/ ported intakemanifold w. a adjustable fpr. Hopefully when i get the vtec tranny it will help out as much as i hope for... 15.3-15.5 range next time out is what im shooting for.


(d16a6 is in there)

 

Mista Bone ran like a 14.8 with his D15B7 and bolt ons, and I believe he was using a hyrbid S20 tranny.


With that kind of setup, you should be seeing mid to low 15's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emerika &raquo;</TD></TR><TR><TD CLASS="quote">.7 seconds in the 1/4 mile for me

went from a 15.5 to a 16.2, just by switching trannies....same 60 foot, etc

88 mph vs 81 </TD></TR></TABLE>

oh man...you are making me want my SRR 4.9 even more

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emerika &raquo;</TD></TR><TR><TD CLASS="quote">Mista Bone ran like a 14.8 with his D15B7 and bolt ons, and I believe he was using a hyrbid S20 tranny.


With that kind of setup, you should be seeing mid to low 15's
</TD></TR></TABLE>

D16a6 longblack
Prelude intake airbox w/ tube
60mm Throttlebody
Ported z6 Intake Manifold (and also bored to 61-62mm)
b&m fpr
new D16z6 injectors
new D16z6 fuel rail
new oem fuel filter
Walbro255
PYR3 (stage-3) race camshaft
Head was ported and polished on the exhaust ports
DENSO iridieam spark plugs
4-1 mugen replica header (ssautochrome)
Stock Cat
Stock EXhaust
And the Lovely DX tranny


I ran it almost completly stock with only the 4-1 header (exhaust still attached) and it ran a 16.1 @ 84
I have so many fuel upgrades because i used to have a TD04 on the orignal motor for a while before the rings died on me (8psi on a 256,000 mile motor )

 

i just found out the tranny i have on my car isnt a dx one its a cx tranny..how much of a differnce is there between the ex/si tranny and the cx one???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k12ayz1e &raquo;</TD></TR><TR><TD CLASS="quote">i just found out the tranny i have on my car isnt a dx one its a cx tranny..how much of a differnce is there between the ex/si tranny and the cx one???</TD></TR></TABLE>

big difference.

Put it this way....people use the CX's 3rd gear in a Si/Ex casing for the 4th gear

 

ohh yah the d15b7 is quicker of the line...i have a 95 civic lx and my brother has a gutted 93 hatch w/ d16z6, i'll beat his *** of the line, but around 3 gear range he'll come back and beat me...but thats street racing, and yes i love it

 

emerika, get your facts straight before spreading lies.

 

Si trannies own, awesome gearing.

 

I switched to an si/ex tranny and love it . . . one of the best mods to date for me

 

Is putting a srr 4.9 final in a dx tranny just as good as having a ex/si tranny?

 

Shorter gears = quicker acceleration. I am trying to decide what to do transmission-wise for my car. Well I did some calculations for my mini-me and heres what I got:

Stock DX Tranny (@7200 RPM)
1st to 2nd Shift: 37 MPH
2nd to 3rd Shift: 68 MPH
3rd to 4th Shift: 102 MPH
4th to 5th Shift: 132 MPH

Stock EX Tranny (@7200 RPM)
1st to 2nd Shift: 35 MPH
2nd to 3rd Shift: 60 MPH
3rd to 4th Shift: 91 MPH
4th to 5th Shift: 126 MPH

DX Tranny w/ SRR 4.7 (@7200 RPM)
1st to 2nd Shift: 32 MPH
2nd to 3rd Shift: 59 MPH
3rd to 4th Shift: 88 MPH
4th to 5th Shift: 114 MPH

DX Tranny w/ SRR 4.9 (@7200 RPM)
1st to 2nd Shift: 31 MPH
2nd to 3rd Shift: 56 MPH
3rd to 4th Shift: 85 MPH
4th to 5th Shift: 109 MPH

Done using this link here: http://www.f-body.org/gears/

As you can see, the 4.7 is almost identical to the EX transmission...the 4.9 just a bit better. With an EX tranny being around $150-$200 and the SRR 4.7 Final Drive being $500 + labor to take the tranny apart...PLUS with the EX transmission you don't drop out of the powerband between 1st and 2nd...I'd say go with the EX transmission...