I just bought a DOHC ZC engine but there was no tranny. Can I just use my tranny that came with my DX or should I buy a new one?

 

Yes you can.

 

You can use the dx tranny but I would go out and get a 89-91 si tranny you will feel the most gains with it

 

i had a dx tranny on my dual cam zc forever, and it sucked compared to the si tranny i put on a couple weeks ago. gas mileage rocked on the dx, and i drive a lot of highway, but i really dont care, the si tranny just keeps me driving a little slower(not a bad thing)....it totally rules around town though, the higher final drive makes it easier to stop-go drive i think.

 

i like the gears in the 91 si tranny

 

There is little difference in the gear ratios between the DX and Si trannies. If your DX tranny is in good shape, use it. You never know what kind of tranny you might get, especially from people who race their cars.

 

ZC Tranny is pretty cool. Too bad I'm doing like 4000RPMs at 80mph.

 

i LOVE my zc tranny

yea you do run pretty high on the freeway, but i am in my powerband damn near ALL the time

 

gear ratio-wise the dx and si are the same, so shifting will feel the same, but the final drive is better on the si, a bit higher. you get out of the hole faster

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by skud_dusty &raquo;</TD></TR><TR><TD CLASS="quote">i LOVE my zc tranny

yea you do run pretty high on the freeway, but i am in my powerband damn near ALL the time</TD></TR></TABLE>

Yeah with my DX if I was in 5th on the freeway I could jam down the pedal and it would take like 5 minutes to go 1mph more. With the ZC if I touch the pedal I can feel its still right in the torque range.

 

Si tranny hands down geared the best for speed . It makes slow motors fast.

 

Yes I say go out and get the Si tranny. I think it's the best for the ZCand especially for racing.

 

I also noticed the dx and si gears are all the same and the final drive is a bit higher on the si. What does the final drive actually mean? if the gear ratios are the same aren't they pretty much the same trannies

 

now, correct me if im wrong, but dont the zc's actually have a different gear ratio than the si's along with a diff. final drive?

 

si ratios zc ratios-----
1: 3.250 1: 3.250
2: 1.894 2: 1.944
3: 1.259 3: 1.250
4: .937 4: .909
5: .771 5: .878
fd: 4.25 fd: 3.88

actually i just noticed the dx and zc have the same final drive

 

Where could I get a good Si Tranny for my ZC then?
I was originally gonna buy the ZC tranny but now I've changed my mind. Also, if I could save up for like another 6 months or so do you think I should just get the B16 with the Y1? I mean, I know the B16 is pretty damn phat but I want an engine now b/c my engine just has no power after 50 mph. And I race some of my friends and sometimes even am gettin beat by autos. Embarrassing but my car has 150,000 miles and it's all stock so I guess that could happen or maybe I just suck at shifting.

 

i can get you a si tranny, how much are you looking to spend.

 

idk, give me a price and I'll tell you. Is it in good condition or is it a piece of junk? Does it need to be rebuilt or what?

 

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