Compression Ignition Addict
Join Date: Sep 2006
Location: Bardstown, KY
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good for pullin, bad for mileage
i've got a '97 f250 and it has the 4:10 gears, it seems to be rare because even some guys with f350 have 3:55's.
at 70 i'm running 2300 rpms.
@ 60 it's like 1900.
also, if you've learning about your truck, check yer rear brake shoes. I went to replace mine and already had it tore into when i found out that my truck was also ordered with F350 or "1" ton rear brakes which are like 1 inch wider.
only way to lower rpms is to change gears in both pumpkins, or get a Gear vendors splitter for about $3000.
'97 F250 ext. cab 4x4. DIY intake, 3" DP, kitty gutted, TW chip
, 4-15-09 Tranny rebuilt, FPR shim, tech forum exhaust brake, isspro EGT gauge(stealth mounted)
292,000 miles, Dana 60 kingpin conversion, (thank you pipelayer!)