Drexxle wrote:
having a look at the book again, i can only summise that the diff in the current box a leyland 998/1098 is ratio'd at 3.765, which would give lower revs at 100km/hr. Sorry Higher rev's easy way to remember it is, Over drive 5th Gear is Normal 1.1 which is Lowest revs at speed
The book has a chart at the back specific to leyland 998cc but this chart doesnt refer to a diff ratio, it says then to refer to the data at the front of the book and as in the chart posted here lists 3.765, which i guess is better for highway running than a 3.44 No oppisite way round 3.765 is quicker off the mark thou but the 3.44 is better at transferring torque for up hill and highway use. Then this chart refers to specific leyland ratios for A+ series boxes, and the 998 isnt an A+ block.
im perplexed now, and dont really know what is in the box currently.
We use a 3.44 in our 1100+60 GR RE13 Cam and nice shaved 202 head. Good on the highway but want a bit more off them mark so my next 998 motor will get a 3.765
