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wtb: HF 5th Gear

181 Views 14 Replies 3 Participants Last post by  CrxKev
Let me know what you have and how much?
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closest I have in .702 5th, I might have a .694 hiding somewhere,,,,,,
I am having my Si tranny rebuilt and I thought while it was getting rebuilt, I could put a HF 5th gear in it and keep the highway rpms down.
What do you thing?
any D-series 5th from 88-2000 will work.........
any D-series 5th from 88-2000 will work.........
Won't the HF have the lowest highway RPM???
Might have found my answer:
5th gear-----FD------45------60------80------100---
0.702------4.058---1898---2530---3373---4217--
0.702------4.250---1988---2650---3533---4417--HF
0.750------4.250---2123---2831---3775---4718--
0.771------4.250---2183---2910---3880---4850--Si
0.878------4.250---2486---3314---4419---5523--

Maybe it isn't worth it. Looks like only about 300 rpm difference.
dunno much about trannys...but if it helps any, the hf tranny will run 100mph under 3k rpms in 5th with stock 13' steelies
Might have found my answer:
5th gear-----FD------45------60------80------100---
0.702------4.058---1898---2530---3373---4217--
0.702------4.250---1988---2650---3533---4417--HF
0.750------4.250---2123---2831---3775---4718--
0.771------4.250---2183---2910---3880---4850--Si
0.878------4.250---2486---3314---4419---5523--

Maybe it isn't worth it. Looks like only about 300 rpm difference.
LOL, you know how old that info is?????

Like 1997-1998, good to see my info still being used though :)
LOL, you know how old that info is?????

Like 1997-1998, good to see my info still being used though :)
Just doing a little research.

Do you think it is worth it to put the HF 5th in an Si tranny?
yes and no.

1.6L = yes
1.5L = no

>70 mph highway = yes
<65 mph highway = no

.771 is fun, at 70 mph just stab and steer, hurts mileage a little.

Driver habits make the biggest difference.
yes and no.

1.6L = yes
1.5L = no

>70 mph highway = yes
<65 mph highway = no

.771 is fun, at 70 mph just stab and steer, hurts mileage a little.

Driver habits make the biggest difference.
Hoping to build an A6 turbo with Si tranny and LSD(leaning towards OBX).
A6 on crack, I mean boost, .702 will be fine.....

My price on 5th gearsets is $25 shipped.......a trade for your old .771 or buying it back later if I need it is possible....
A6 on crack, I mean boost, .702 will be fine.....

My price on 5th gearsets is $25 shipped.......a trade for your old .771 or buying it back later if I need it is possible....
Is it an HF 5th gearset?
no, 92-00 5th....very little difference between it and .694 HF, maybe 20 rpms @ 70 mph?

EDIT: 3500 rpm with .702 = 3460 rpm .694 = 78 mph

@ 70 mph the difference is 36 rpms
I see. Sounds good!
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