Page 1 of 1
how fast do they spin
Posted: Tue Feb 19, 2008 11:16 pm
by troopy94
does anyone know what is the standard rpm for a 89 sierra at 100 i dont have a tacho in my zook and a search didnt reveal much cheers
Posted: Wed Feb 20, 2008 4:34 am
by NIK
I think its in one of the reduction gears threads.
Click on the club link in my sig go to tech there is a gear cal type it in and it will tell you.
5th gear .86
t/c if stock 1.4
diffs should be 3.7 (could be 3.9)
tyres 26" stock
Plug inthose numbers and your right to go, assuming they are correct for your zuk.
Nik
Posted: Wed Feb 20, 2008 6:35 am
by Gwagensteve
It's normally in the 3300-3500rpm range.
Nik - I didn't think all sierra's had the .86 5th, only coilers?
I work on .785 (?) for leaf sierras.
Posted: Wed Feb 20, 2008 12:44 pm
by DAV029
my 5th is 0.793
Posted: Wed Feb 20, 2008 5:34 pm
by NIK
Is .86 higher or lower?
I have a coily gearbox but I thought it was the lower of the 2.
I think we spoke about 5th ratios in another thread and decided most were the same except somewhere around 87 and the 3.7 diffs??
Nik