By david (208.130.245.99) on Saturday, March 03, 2001 - 07:05 pm:

my '73 has a later 5 speed tranny in it. i was told it was from an accord, but the clutch is still cable driven. its ID letters are GD.

any info would be very nice

By Charles (137.219.16.107) on Sunday, March 04, 2001 - 08:50 pm:

As you suspect, yours is the transmission of an ED 1500.

By david (208.130.241.176) on Sunday, March 04, 2001 - 10:05 pm:

what years is the ED. i thought the 80-83 civics had an EN domination.

By david (208.130.247.64) on Monday, March 05, 2001 - 01:11 am:

civic 1500, right? 75-79. i don't know why i didn't think of that.

whats the ratios for that box?

By errol (152.163.204.201) on Monday, March 05, 2001 - 08:04 am:

could it be that the 'G' signafies 'gearbox' and the second letter means the engine it came from? GM- GEARBOX-EM1 ENGINE, GJ- to a 1300 EJ motor....and so on. And the same with the engines.... E- engine and D would be a 1500...ED....I don't know why i never put this together before!

By quikrick (63.204.16.66) on Monday, March 05, 2001 - 08:55 am:

David, The 75-79 5 speeds did not have all the same ratios.

75 CVCC: trunk & hatch
1st 3.000:1
2nd 1.736:1
3rd 1.130:1
4th 0.778:1
5th 0.655:1
FD 4.733:1

75 CVCC: Wagon (good one)
1st 3.000:1
2nd 1.789:1
3rd 1.182:1
4th 0.846:1
5th 0.655:1
FD 4.733:1

76 CVCC
1st 3.181:1
2nd 1.823:1
3rd 1.181:
4th 0.846:1
5th 0.714:1
FD 4.266:1 trunk & hatch
FD 4.733:1 wagon

77-79 CVCC
1st 3.181:1
2nd 1.823:1
3rd 1.181:1
4th 0.846:1
5th 0.714:1
FD 3.875:1 trunk & hatch except Calf. & H.A.
FD 4.428:1 Calif. & high altitude
FD 4.066:1 wagon

By david (208.130.240.31) on Monday, March 05, 2001 - 10:24 am:

is there a way i can give you the numbers and find out which one it is?

By quikrick (63.204.16.66) on Monday, March 05, 2001 - 10:44 am:

Email the #, I think I can help with ID'ing it for you.

By david (208.130.245.162) on Monday, March 05, 2001 - 11:45 am:

ok

By errol (205.188.198.52) on Monday, March 05, 2001 - 09:52 pm:

DAMN SON, (as they say down here) THAT'S THE INFO I've been looking for!

But dose it ring true about the second letter designater?

By david (208.130.245.35) on Monday, March 05, 2001 - 10:06 pm:

if anyone else has a way to ID trannys, mines id/numbers are: GD 860360. quikrick is already on the case, but any of you aspiring slueths can have a go at it.

signing out... Mr. Wolf

By quikrick (63.204.16.66) on Wednesday, March 07, 2001 - 11:41 am:

David,
Here's what you've got...
1979 Civic cvcc 3-door hatch

By david (208.130.246.68) on Wednesday, March 07, 2001 - 01:14 pm:

thank you quikrick very much.

77-79 CVCC
1st 3.181:1
2nd 1.823:1
3rd 1.181:1
4th 0.846:1
5th 0.714:1
FD 3.875:1 trunk & hatch except Calf. & H.A.
FD 4.428:1 Calif. & high altitude
FD 4.066:1 wagon

By david (208.130.246.219) on Wednesday, March 07, 2001 - 02:34 pm:

wait... i thought that final drive was 5th gear. could someone please explain?

By Adrian (Civicguru) (203.42.97.227) on Wednesday, March 07, 2001 - 03:17 pm:

The Final Drive is the last gear before the differential. It's the gear that takes the work from the output shaft and applies it to the diff. Usually you talk about the diff and final drive gear being one, but technically they are separate things with the diff being the bit that distributes the rotational force between the two driveshafts (if there weren't at least two outputs from it then it couldn't really be called a "differential" now could it ).
5th gear is simply the highest gear between the input shaft and output shaft.

By david (208.130.241.235) on Wednesday, March 07, 2001 - 04:18 pm:

thanks adrian, for the info.
quikrick thank you too.

By errol (152.163.204.176) on Thursday, March 08, 2001 - 06:33 am:

Charles; would you know the gearing for that city turbo tranny (er) that i have? I remember reading somewhere that it wasn't a 'good' final drive ratio?

By Charles (137.219.117.127) on Thursday, March 08, 2001 - 04:43 pm:

These are not recommended for a n/a car, but they work well with a turbo car.

1‘¬ 2.916
2‘¬ 1.764
3‘¬ 1.181
4‘¬ 0.846
5‘¬ 0.655
reverse 2.916
Final Drive 4.066

As the city turbo has so much torque compared to a civic EB you might want to keep this box especially if you are going to be adding power to thre city motor, otherwise 1st and second are a bit quick.

The 3rd, 4th and 5th gears in the city could be a bit closer and higher but at 100km/hr (60ml/hr) it is just ticking over at 2600rpm. Gives pretty good fuel economy but you have to drop into 3rd for any high boost overtaking action.
Gives a very high top end speed though. The Mugen race gears sets for the city turbo had the same 3rd, 4th and 5th ratios BUT 1st and second are taller as well to make full use of the low down boost, resulted in a 6 second 0-60ml/hr.

Charles

By errol (152.163.204.177) on Saturday, March 10, 2001 - 04:43 am:

Mugen Gears eh... I could just imagine the cost of those!!

I just found a GJ tranny at this 'yard' that i go to sometimes,(had about 100 just sitting on the floor, and about 80 more on racks 3 shelves high) But it had a hydraulic clutch not a pull one. After inspecting closer, I found a tag that said 85 accord?

I thought that just the civics had the GJ coded
ones?

Charles, thank you for those