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Turned up the fuel delivery. Buy the service manual from Cat. It's worth the money. That is where I get all of my info.

GM uses the Allison 1000 trans for thier trucks. We use the 2K series for the weight class of these trucks.

Bigger tires ??!! If it's got 14.5R20s you have 43"+/- unloaded radius. It leaves about 4 inches between the rear tires. Bigger is not a safe option. Slinging 280lbs. at 50 mph will cause tires to expand another 1" + . I've seen mine do it on the dyno. When running @ full speed , gap is about...

2000 series Allison . Same beast as 1000 but can handle more torque. Transmission easy swap. Electronics another matter. Should be done in a month or 2. Will keep everyone posted. Kit will run around 5-6K Includes Transmission, Torque converter, wiring harness and TCM (computer). Would love...

Double overdrive .71 5th .61 6th . Motor will run at 1750rpm @ 55Mph Which CTIS parts are you looking for. Machining some wheel valves now. Also working on CTIS Axels for 2.5 and 5 ton rockwells. JR

I am seeking other A3 owners for parts swapping and technical info. Currently upgrading to Allison 6 speed auto on one of my trucks. Also bumped Cat 3116 output to 220HP on same truck. Thanks John R.

Tire pressure shuld be 45psi. You will need 1 or 2 - 1 pound shot bags for dynamic balancing. Also make sure wheels are true. 1/8 of an inch off @ the hub = inches @ the outside of the tires.

You need any help with glow plug issues ?