Back to shop ↗
THE HOLDEN COMMODORE FORUM

HOLDCOM Community

Built around the cars. Kept alive by the people.

+ Start a discussion
Holden Commodores gathered at Holdcom
Forum Home›VL Commodore
VL Commodore

Vlt diff?

Started by VLTMIKE · 27 Mar 2012 · 9 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts. View original archive ↗

VLTMIKEArchived member
Hey guys ive got a question that any help would be great.. Ive got an RB20DET vl commodore with 20det gearbox with standard diff and driveshaft, Im wanting to change the diff to 4"11, ive heard having 4'11 diff makes them go alot better what car do you think is best to get the head from?
0 likes
MUSArchived member
You mean "diff gears" 4.11s arnt the best on top end, good on take off tho. Otherwise im abit confused? Whats the cars head got to do with the diff?
0 likes
VLTMIKEArchived member
Quote: Originally Posted by MUSone [View Post] You mean "diff gears" 4.11s arnt the best on top end, good on take off tho. Otherwise im abit confused? Whats the cars head got to do with the diff? Diff head is what i ment by head if 4.11 isnt the best what would you say is?
0 likes
MurphArchived member
Quote: Originally Posted by VLTMIKE [View Post] Diff head is what i ment by head if 4.11 isnt the best what would you say is? 3.7/3.9, A lot more streetable, won't be pinging its head off at hwy speed.
0 likes
TUXEDOArchived member
Skylines have 4.11:1 in them. RB20's are bog and NEED 4.11's. Not sure where you got "diff head" from lol, I think you mean gear set. Auto R31 pintaras have BW78 diffs with 4.11:1 ratio, get the gear set from one of those.
0 likes
5spdvlArchived member
www.calaisturbo.com.au/showthread.php?t=155191 (http://www.calaisturbo.com.au/showthread.php?t=155191) You are the first person I've ever seen refer to a gearset as a head.
0 likes
VLTMIKEArchived member
Quote: Originally Posted by TUXEDO [View Post] Skylines have 4.11:1 in them. RB20's are bog and NEED 4.11's. Not sure where you got "diff head" from lol, I think you mean gear set. Auto R31 pintaras have BW78 diffs with 4.11:1 ratio, get the gear set from one of those. Thanks alot.
0 likes
MUSArchived member
Quote: Originally Posted by VLTMIKE [View Post] Diff head is what i ment by head if 4.11 isnt the best what would you say is? Id say ditch the standard diff head and replace it with a capasitator, use a flux one tho. Ul be flying in no time ;p
0 likes
miladArchived member
^^^ i got one in my vl feels like im going back to the future when i punch it at the lights....
0 likes
KALAYArchived member
i've got 3.9's and at around 2750 in 5th at 100 kays, its revving high enough, 4.11's will make it rev around 3k or so... bit too much for my liking.
0 likes
Sign in or create an account to reply. New members are welcome—no purchase or old CT account needed.

Who’s online

0 members and 3 guests active in the last 15 minutes

No signed-in members active right now. Guests are welcome to browse.

Visitors Today8

16,157 threads, 155,519 posts and 1,788 images saved from CT

47.2% of indexed threads saved