s2000june

im gettin a d16y8 from a friend for my 92 hatch but hes givin me a y7 trans i think from a 97 dx but i have no other EX/si trannies but will this Y7 trans affect me. like will the car be alot slower. or will u not even fell a diff. give me some comments if any of yall has done this.
thanks....

BauleyCivic

Uh it'll be a lot slower. A good half second in the quarter mile

Shift points at 7000 RPM...stock tire size

Y7 Transmission (from a hatch):
39 - 72 - 108 - 140

Y7 Transmission (from a sedan/coupe):
36 - 66 - 99 - 128

Y8 Transmission:
34 - 58 - 89 - 122

turbotime

yeah it blows, i got the y8 on y7 tranny and the gearing is long as ****. Jesus im goin to the yard to see if I can pull a y8 tranny today, but the y8 engine on the y7 tranny is still noticeably faster than the stock cx engine, dont get me wrong.

98slvrcx

why would y7 differ in the sedan/coupe compared to the hatch?

BauleyCivic

Sedan/coupe has a 4.058 final drive
Hatch has a 3.722 final drive

Bigger final drive = shorter gears, lower shift points

s2000june

yah im getttin 2 motors
a y7 for parts such as trans and stage 2 clutch
and im gettin a complete 78 but im not gettin a trans so i need the y7 tranny to drop it in my 92 vx hatch

BauleyCivic

Y7 w/ Y8 trans > Y8 w/ Y7 trans IMO

Civiclx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicrida3 &raquo;</TD></TR><TR><TD CLASS="quote">im gettin a d16y8 from a friend for my 92 hatch but hes givin me a y7 trans i think from a 97 dx but i have no other EX/si trannies but will this Y7 trans affect me. like will the car be alot slower. or will u not even fell a diff. give me some comments if any of yall has done this.
thanks....</TD></TR></TABLE>

the gearing on the y7 tranny is much longer, so it will wind to VTEC longer, i have the y7/y8 minime and it takes forever, so im changing it to the z6 or y8 tranny soon

gubo22

I have a Y8 motor with a Y7 tranny with a 4.9 Final gear.

Best combo imo.

BauleyCivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gubo22 &raquo;</TD></TR><TR><TD CLASS="quote">I have a Y8 motor with a Y7 tranny with a 4.9 Final gear.

Best combo imo.</TD></TR></TABLE>

Not the best combo. 4.9 FD's are hardly streetable...and the gear spacing doesnt change when you swap the final drive. For instance...with the Y8 tranny when you shift from 1st to second it goes back to 5000 RPM. With the Y7...it goes back to like 4200 RPM. The only thing a final drive does is change the MPH that you shift at.
Best combination is an EX transmission with 20" tires. Don't believe me?

Y7 tranny shifting at 7200 RPM with stock tires and 4.9 FD:
31 - 56 - 85 - 109

Y8 tranny shifting at 7200 RPM with 20" tires and stock FD:
31 - 53 - 80 - 110

Thank you have a good day!

gubo22

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

Not the best combo. 4.9 FD's are hardly streetable...and the gear spacing doesnt change when you swap the final drive. For instance...with the Y8 tranny when you shift from 1st to second it goes back to 5000 RPM. With the Y7...it goes back to like 4200 RPM. The only thing a final drive does is change the MPH that you shift at.
Best combination is an EX transmission with 20" tires. Don't believe me?

Y7 tranny shifting at 7200 RPM with stock tires and 4.9 FD:
31 - 56 - 85 - 109

Y8 tranny shifting at 7200 RPM with 20" tires and stock FD:
31 - 53 - 80 - 110

Thank you have a good day! </TD></TR></TABLE>


Interesting, maybe I should invest in some 20" Spinners

I was going to put the 4.9 on a Y8 tranny but was worried I would be shifting way to often for daily driving. Do you think it would be much worse then with the Y7?

I wouldn't mind having the gear spacing of the Y8...

BauleyCivic

Yes. Y7 w/ 4.7 FD = Y8...imagine a Y8 w/ a 4.9 FD

This will give you an idea...and 20" tires (NOT WHEELS, TIRES...13" wheels w/ low profile tires) is a substitute for a 4.7 FD...so just remember that...

195/50/15 Tires
7000 RPM Redline
Gear Ratio Comparison
Using: http://www.f-body.org/gears/
(Y7 is with 4.058 FD in sedan/coupe)

Y7 Stock:
36 - 66 - 99 - 128
5th Gear @ 60mph: 2575 rpm

Y7 w/ 4.7 FD:
31 - 57 - 86 - 111
5th Gear @ 60mph: 2950rpm

Y7 w/ 4.9 FD:
30 - 55 - 82 - 106
5th Gear @ 60mph: 3050rpm

Y8 Stock:
34 - 58 - 89 - 122
5th Gear @ 60mph: 2650rpm

Y8 w/ 4.7 FD:
31 - 53 - 80 - 111
5th Gear @ 60mph: 2950rpm

Y8 w/ 4.9 FD:
30 - 51 - 77 - 106
5th Gear @ 60mph: 3050rpm

Shift Drop Points:
Y7 @ 7000-
1st to 2nd- 2nd drops to 3800rpm
2nd to 3rd- 3rd drops to 4650rpm
3rd to 4th- 4th drops to 5400rpm
4th to 5th- 5th drops to 5400rpm

Y8 @ 7000-
1st to 2nd- 2nd drops to 4100rpm
2nd to 3rd- 3rd drops to 4600rpm
3rd to 4th- 4th drops to 5100rpm
4th to 5th- 5th drops to 5400rpm

RyanEJ8

Some more good tranny info can be found here.

http://home.cinci.rr.com/mistab0ne/tranny.html

Tony Starks

Either way, its still going to be a stronger motor than what you are running now.

SOHC_MShue

damn Bauley you are becoming a tranny master

s2000june

thanks for the help guys
yall great!

CoolHandRobb

This was very helpful !! So recently just got a beater 2000 ex with a y8 trans that's not shifting So I found a y7 that's in great shape got it on the low. Haven't put it in yet (the y7 trans) My question is...Would putting a clutch kit on the y7 and doing the wheel set up like you suggest comparable? Would it be worth my time?

CandyRedRC46

FFS IT HAS BEEN 14 YEARS SINCE THIS WAS POSTED IN. These people have probably all grown up, bought a house and drive a ford edge to take their grand kids to school by now.

CoolHandRobb

HAHA! DIDN'T SEE THAT you never know though man, you saw it! Dude with that much knowledge wouldn't just loose the love! Maybe hes sitting around answering dumb *** questions while waiting in the pick up line of the pre k for his grand kids. Haha

mk378

When you say it is "not shifting" maybe it is only a clutch problem all along.

If you are setting up for daily driving, you can certainly use a DX/LX transmission, the difference is barely noticeable.