โOct-22-2015 08:52 AM
โNov-11-2015 01:57 PM
bigg-limo wrote:Stock Sizefla-gypsy wrote:
Did a check on my 6.8L/4.10 rear with the 5 sp auto and I was turning just 2350 RPM's at 75 mph. 3000 rpm's would indicate very low ratios in the 5 sp manual transmission
He could be running smaller tires, as well.
โNov-11-2015 01:51 PM
fla-gypsy wrote:
Did a check on my 6.8L/4.10 rear with the 5 sp auto and I was turning just 2350 RPM's at 75 mph. 3000 rpm's would indicate very low ratios in the 5 sp manual transmission
โOct-23-2015 10:51 AM
โOct-22-2015 03:29 PM
colliehauler wrote:Old-Biscuit wrote:Thank you
RC is not part of your axle code
That is the 'regional code'
52 is your axle code
52 is Conventional non-Positraction Differential 4:10
Info
โOct-22-2015 02:35 PM
Old-Biscuit wrote:Thank you
RC is not part of your axle code
That is the 'regional code'
52 is your axle code
52 is Conventional non-Positraction Differential 4:10
Info
โOct-22-2015 02:33 PM
donn0128 wrote:The sentence followed by a question mark. Old Biscuit answered it, thanks anyway.
And your question is?
โOct-22-2015 01:12 PM
benk wrote:
Posted: 11/01/11 10:23am...ps...the links no longer work..buddy took down his web site
Several ways to check, but the most reliable is with an actual count.
There is a label in GM glove boxes that lists all of the options that
vehicle left the factory with. Called RPO codes and here is a link
to my buddies site with links to several RPO code sites:
http://aplsweb.com/Topics/RPO-URLS.htm
Some of those links are no longer and this one is the better of them
http://aplsweb.com/Topics/TopicPix/RPO.pdf
But, since buying used, the previous owner(s) may have changed out the
gear set.
Best to then tie/tape a length of string on the drive shaft. Note a
datum.
Then roll the vehicle one tire rev using the valve stem as a datum
Count the full turns and the fraction left. That is the diff ratio
and makes no matter what size tire or suspension lift, etc.
Remove the string.
Here are some of the codes. Note that there are some only for cars
and not for trucks
GM8: Axle - Rear (2.56 Ratio)
GT4: Axle - Rear (3.73 Ratio)
GU2: Axle - Rear (2.73 Ratio)
GU4: Axle - Rear (3.08 Ratio)
GU6: Axle - Rear (3.42 Ratio)
ZQ9 - Axle, performance ratio (4.10:1) (requires G80 & L78 or Z28)
โOct-22-2015 01:09 PM
โOct-22-2015 12:52 PM
โOct-22-2015 11:41 AM
โOct-22-2015 09:04 AM
โOct-22-2015 09:00 AM