JoeIsuzu wrote:
Isuzu had a problem with the speedometer cable pulling transmission oil all the way up to the instrument cluster.
I’m curious what rear end your truck has, that requires a 6x17. I’ll ask my main Isuzu supplier if he has access to this part.
Jack
Jack- 6x17 driven gear was stock for a series 8-10 LUV with auto trans, which had 3.73 gears. Manual trans with 4.10 gears used a 6x20. When I went from stock 27"-28" tires to 31" tires I swapped in an auto trans 17-tooth gear to get my speedo back almost correct.
OP apparently has a 4x4 MSG tranny swapped in, which should have had a 6x20 speedo gear. Who knows why it has a 6x17, maybe to correct the speedo for a different tire size like I did?
Was the speedo correct with the 6x17 gear and the current tire size? If not was the speedo reading fast or slow? To read faster use a gear with fewer teeth, slower a gear with more teeth.
I have bought speedo gears from JLEMOND in the past, they were about $25 each, may be more now. They come in 16 through 20 teeth & maybe 15 & 21 tooth as well.
I think a '72 LUV had 4.56 gears & used about 26"-27" tires, which would account for the 5x17 speedo gear listed in the specs. I'm basing this on the fact that I have three MSG-5 Trooper trannies that have 5x15 speedo gears which corrected the speedo for 4.56 gears & 29" tires.