Motorsports This board is for Z Racers who compete in Autocross, Road Racing and Time Trials. Focus will be on car set up and modifications. Event coverage, and race parts for sale or trade.

280A vs 280B trans boxes

Old 12-09-2004, 04:43 PM
  #1  
Registered User
Thread Starter
 
Join Date: Mar 2002
Posts: 646
280A vs 280B trans boxes

Hey Guys ,
I was checking out Johns failed tranny post and was wondering what your
preferences on the 5 speed boxes are ?

Here is the link to the Zgarages tranny ratios .

http://www.geocities.com/zgarage2001/ratios.gif

Mike
Spudz is offline  
Old 12-10-2004, 05:27 AM
  #2  
Registered User
 
Join Date: Apr 2002
Location: Waukesha, WI
Posts: 236
IMHO if you're running anything higher than a 3:55 rear end, you're best off with the B trans. Also, I may be way off base here, but I beleive the B trans has a better shift fork design with bronze friction areas.
preith is offline  
Old 12-10-2004, 08:32 AM
  #3  
Registered User
 
jburge01's Avatar
 
Join Date: Aug 2002
Location: Texas
Posts: 113
I had a 280B box in mine (the one that blew) with 1 4.44 R190 LSD. Previously I had a 4 speed with a R180 4.11 VLSD. Even with the bad inside wheel speen on the 4.11 VLSD, I actually got quite a bit slower after the switch to the R190 LSD because of the 4.44 ratio, so I switched to the 5 speed b box and got quicker. 5th is too high in the 81-83 box to be of much use though. It turned out not to pull very strongly @ about 140 MPH and was just a place to shift after you hit 8K-8.5K RPM in 4th.
jburge01 is offline  
Old 12-10-2004, 11:18 AM
  #4  
Registered User
 
Join Date: Nov 2002
Posts: 100
Hey Mike,
Try this site http://www.geocities.com/z_design_studio/ You can pick the setup you want and see the top speed in all gears. For autocross I just look at where 2nd gear runs out. Depending on your power output the ideal trans will get you to about 65 in 2nd which will be allow you drive most courses without shifting. If you're down on power you might want to look for lower speed in 2nd to allow you take advantage of your shorter power band.

Tom
tholt29 is offline  
Old 12-10-2004, 10:24 PM
  #5  
Registered User
Thread Starter
 
Join Date: Mar 2002
Posts: 646
Thanks Tom,
I played with all kinds of combos Pretty interesting how
mixing tire sizes. trannies, and rear gear ratios are similar
when mixed up a bit.

Mike
Spudz is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
CanyonCarver
Wanted (WTB / WTT)
5
01-23-2006 01:02 PM
lugerz
FS: 240Z,260Z,280Z & 280ZX (70-83)
10
08-05-2005 04:30 PM
ZXDude90
300ZX (Z32) Appearance Exterior, Interior
3
02-21-2005 09:53 AM
ChrisZNA
For Sale (VIEW ALL)
1
06-28-2004 02:06 AM
ChrisZNA
300ZX (Z32) Forums
0
06-26-2004 04:11 PM


Thread Tools
Search this Thread
Quick Reply: 280A vs 280B trans boxes


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.