Polar Bear Suburban

[DirtyLarry]

Originally Posted by fun in dirt

I just love rigs that have lots of mods that are so cleanly done that the average person doesn't even notice them. But we're not average around here & do notice! I can only imagine the hours of planning & labor that has gone into both your builds. Much respect to you for 2 super nice rides!!!

Wow! Thanks for the kind words

[DirtyLarry]

Little update on the Polar Bear…. Now that work travel and vacations have passed I finally had time to run it up to a Dyno Tuner in Colorado Springs to sort out the ECM tuning to accommodate the RayLar cam. I tell ya, what a difference having a live dyno tune done by someone that knows what they’re doing makes. The big bear runs sooooo much better now. No more cam lope either! She idles smooth like a Cadillac.

The dyno results came in at 301HP/386 torque at the wheels. Not too shabby considering the original TBI 5.7L probably laid down around 110-130 HP to the ground and this shop claims most Jeeps that come through their shop rolling on 35” tires with LS engines are putting down barely 280 lb ft of torque to the ground. He also claims the 4x4 drivetrain and tire loss is around 25 to 30% so with that, I was pretty happy with 301/386. Next project is to get busy making the A/C lines now that the weather is heating up.

For best audio pleasure use earphones and a second set of earphones up your nose to smell the exhaust
https://youtu.be/Qn1ys5u42aE?t=29s

[bilfman]

One day soon planning an 8.1 I'm sure I'll ask for some guidance.

[Average Joe]

Glad to hear ya got her dialed in! That torque curve is a 'beaut.