|07-11-2011, 07:43 AM||eBay Motors #1 (permalink)|
Join Date: Dec 2010
Location: Southern California
SUNCOAST Allison 5 to 6 speed conversion
I have an 05 DuraMax, and was wondering if anyone is familiar with a company named "SUNCOAST" that manufacturers the above conversion kit for 2001-2005 Allison tranny?
The manufacturer claims a 325rpm drop at 75mph, increasing the MPG by 1-1.5mpg. I tow a 35 foot fifth wheel and currently getting around 13-14mpg.
and was thinking of maybe doing this mod.
It's not cheap at $2148, so I figured I'd better do some more research!!
Thanks in advance..
|07-11-2011, 07:49 AM||eBay Motors #2 (permalink)|
Join Date: Jan 2010
Location: state college, pa
honestly you can pry up your mileage a little by getting a tow tune made specificly for your truck with efi live. might want to fill out your signature though so we no what you have and whats done to your truck
04 gmc sierra
5 inch downpipe back with a 3 inch downpipe, efi live, ultralite II gauges, custom 5 inch intake, stage 5 trans build, high flow y bridge, egr delete, ported fuel rail fitting/plug, pump rub kit, lml manifold, intercooler pipe, lotsa white powdercoat, airdog 165 factory fuel filter deleted, tierod sleeves, idler and pitman arm supports, cervinies cowl induction hood, 20x10 eagle alloys, 37 12.50 20 nitto trail grapplers,rough country lift, all leather interior with camo seatcovers, halo headlights, alpine doubledin.