Mr. Magoo

Mr. Magoo Mr. Magoo is an old man who believes he drives a GMC Syclone Concept truck. This page will follow his journey of his LSX swap.

Magoo's Syclone truck is a 2001 GMC Sierra that originally had a 4.3L V6 that would do 0-60 in about 4 days.

With Fullsize Trucks VS The World – I just got recognized as one of their top fans! 🎉
01/31/2026

With Fullsize Trucks VS The World – I just got recognized as one of their top fans! 🎉

Mr. Magoo got new shoes! They HOOK! Greg Jennings time for a drop!
01/18/2026

Mr. Magoo got new shoes! They HOOK!
Greg Jennings time for a drop!

We are getting close to a final tune? Thank God for Jennings performance working through my little bugs.
01/05/2026

We are getting close to a final tune? Thank God for Jennings performance working through my little bugs.

11/17/2025

Hello everyone! We have a base tune on the truck so we can grab logs and start working the bugs out of the truck. It is 100% drivable and the driveability near feels like a stock truck. We will leave the ugly tires on until we dyno.

New GMC drive shaft is here! Straight off of a Mack truck!!!
07/23/2025

New GMC drive shaft is here! Straight off of a Mack truck!!!

07/09/2025

Mr. Jennings just about has the full custom exhaust finished up!

05/07/2025

This week is injector week. I was informed that my build needs a 1700cc injector. What do you guys think?!

Greg Jennings Greg Jennings Shout out to Jennings for getting this rear end installed flawlessly. Thanks caltracs!
04/20/2025

Greg Jennings Greg Jennings

Shout out to Jennings for getting this rear end installed flawlessly. Thanks caltracs!

thanks for the gorgeous setup!!!
04/18/2025

thanks for the gorgeous setup!!!

It fits!!!!
04/16/2025


It fits!!!!

Address

Southlake, TX

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