5.0L Vortec Trailblazer -Baja 500,2000 Trophy Truck and 02 tbss

Gerbil21

Original poster
Member
May 28, 2014
837
I dont know if anyone else knows this and i didn't know exactly where to put it, but the other day i read about the 5.0L Trailblazer and had to know more so here is a list of everything i found if anyone would like to read it

"The Atlas program began in 1995 along with the planning for GM's next-generation mid-size SUVs and pickup trucks. These vehicles were designed around the I6 engine. The I6 version was used in a Baja 2000 racing truck, winning its first race in a class that also included V8 engines. Another I6-powered truck won the truck class at the Pikes Peak International Hillclimb." -Wiki

chevrolet_2000-TrailBlazer_VortecPowered-002_1.jpg
"The TrailBlazer features a computer-designed carbon-fiber body mounted on a tube frame chassis. It is powered by a race specific all-aluminum 5.0-liter I6 engine featuring dual overhead camshafts and a Hydra-Matic three speed automatic transmission. The Vortec I6 engine produces 600 horsepower at 7500 rpm and 450 lb-ft of torque at 6000 rpm."
-http://www.theautochannel.com/news/press/date/20000717/press020710.html

from what i can gather the engines were specially made by gm and herzog and some say roush designed it too.
I also found a link to a falconer i6 showing they had involvement as well

"This engine was originally designed by General Motors as a thoroughbred racing engine. Its purpose was to prove the reliability and power potential of their production in-line 6-cylinder engines used in various truck and SUV platforms. Dubbed the 'L6', this engine powered the winning trucks at Pike's Peak and in Off-Road desert racing. This engine shares no components with, and bares little resemblance to the production engine."

http://falconerengines.com/falconer_l6.php
falconer_l6.jpg
227514_2026195464199_4186687_n.jpg

incase reading that last bit made you sad to know that the engines that were raced had no resemblance to our i6 then buy one
falconer i6 goes for a base price of $45,000 :yes:

im sure gm tested something that they used in the races for the final production engines since falconer says it was to prove their production i6. and in gm's vehicle information kit for the 02 TB it states
"a racing version of the powerful inline-six has won both the baja 500 and the Nevada 2000"
-so this engine (or parts of it) was used and tested somewhere in the race trucks but not directly since it says that the falconer engine that won those races had no resemblance to the production i6

if you want more pics of the truck and engine look here
https://www.facebook.com/media/set/?set=a.2024974513676.122040.1523401259&l=c8778989e4

also a short video to hear the engine
https://www.youtube.com/watch?v=0j9wIXGOJnM

also it was a gmc envoy that raced in pikes peak
http://www.barrett-jackson.com/Archive/Event/Item/2004-GMC-ENVOY-RACE-TRUCK-72016
http://www.highperformancetrucks.com/forums/gallery2.php?g2_itemId=3307
GMC Envoy Pikes Peak_002.jpg

but if that sucked reading that the unusual i6 in a suv wasn't actually torture tested in racing then read about the 4.2 trailblazer ss

"We were surprised to learn how little is changed to create this Bullitt Mustang-performance-equaling six, with its twin Aerodyne turbos and air-to-water intercooler. For example, the block, crank, head, head gasket, cams, and valve sizes remain virtually untouched. The extra breathing hardware adds but 45 lb to the engine's mass. The only critical mods were a switch to 8.5:1 pistons (from 10.1:1), the addition of piston-cooling oil squirters, shorter (by 2 mm) connecting rods, thicker piston pins, higher-flow oil pump and fuel injectors, and a freer-flowing exhaust system. As you'd expect, the 4L60-E four-speed transmission's internals required some beefing, and the transfer case was swapped for the ultra-tough all-wheel-drive unit found in the 6.0L V-8-powered Cadillac Escalade."

Read more: http://www.motortrend.com/future/concept_cars/112_0203_chevrolet_trailblazer_turbo/#ixzz3QBTcSZY7
LL8_TT.jpg

and then in 06 the year the ss came out the i6 has a complete internal redesign including piston oil squirters that the prototype ss 4.2 engine had as well with a 10.1:1 compression ratio up by .1:1 that goes along with the internal redesign, so gm had great plans for this engine but it never came to be, the article above was posted in 2002 showing even more that gm had stocked what became 06 year engines ready for use in the ss so they were serious. im not shure why and will never know why they didn't since these engines don't have any aftermarket support other than a tune,($850 headers don't count) so power pushing add ons aren't here to show the strength of these engines

unfortunately the i5 gets more aftermarket support(sorry Colorado and canyon owners and h3 owners too) than the biggest engine in the Atlas family

https://gmheritagecenter.com/docs/gm-heritage-archive/vehicle-information-kits/Trailblazer/2002-Chevrolet-Trailblazer.pdf?zoom_highlight=trailblazer


02 ss.jpg
 

Gerbil21

Original poster
Member
May 28, 2014
837
The were only 7 custom cast engines made by gm developed by Herzog and roush

Also 3 trophy trucks were made 1 flipped and was eventually privately bought and restored
 

HARDTRAILZ

Moderator
Nov 18, 2011
49,665
Its back!

GM had a lil badass with those!
 

Gerbil21

Original poster
Member
May 28, 2014
837
Which engine? I'm guessing the bigger i5 also how much overboring? That sounds very interesting put that together with a 08 year engine, ported heads, e fans, tune,CAI maybe even cams and that will !make a very interesting engine.

And if the guy that has a supercharged i6 makes some more headers that would be even better
 

Gerbil21

Original poster
Member
May 28, 2014
837
From what I can find the bigger of the two the 3.7 i5 had a 95mm bore and 102mm stroke, the i6 has a 93mm bore and 102mm stroke that gives a slight bump to 4.3 liters
 

Gerbil21

Original poster
Member
May 28, 2014
837
Interesting enough using a horsepower calc. A 4338cc engine with 10.1 compression ratio and max power rpm at 6000 rpm it would make 292 hp so once again add all from above especially ported 08 heads and it would be making some good power
 

Capote

Supporting Donor
Member
Jul 14, 2014
24,227
Atlanta, GA
That was good read man. I've heard of the Baja & turbo i6 concept TB
 
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redleg6

Member
Apr 10, 2012
686
Aeromotive (that did the twin-turbo work) is just down the road from me.
 
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Capote

Supporting Donor
Member
Jul 14, 2014
24,227
Atlanta, GA
Cool [emoji106]
 

Gerbil21

Original poster
Member
May 28, 2014
837
I wonder if they have a prototype engine that would be nice.

Also i found out that there was a turbo version of the Colorado i5 also. It was supposed to be used as the 02 Bel air

"It also served as a showcase for the their new turbocharged inline five-cylinder concept engine based on the L52 (Vortec 3500), straight-5 truck engine. According to a September 2002 GM press release, the all-aluminum 3.5 L (211 cu in) 20-valve DOHC engine, with a bore of 93.0 mm (3.7 in), and a stroke of 102.0 mm (4 in), that delivers up to 315 horsepower and 315 lb·ft (427 N·m) of torque, mated to a Hydra-Matic 4L60-E electronically controlled four-speed automatic. A virtual "turbo boost" button on the steering wheel activates the powertrain control module to trigger a more aggressive spark and fueling calibration for maximum horsepower."
 
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