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If you have more questions or want more details please email : bethel.esbensen@isonews2.com .
UP FOR SALE IS PROBABLY ONE OF THE FASTEST STREETABLE TRUCKS AROUND!!!
Dyno sheets in hand will give proof to what this little truck is capable of. Although I never drag raced it, I
would assume its a 10 second truck.
Highly modified although it has a stock "sleeper" appearance and will leave a lot of people with their high end
sports cars in tears when they are spanked by this little black truck!
1991 GMC Syclone 4.3 AWD Turbo 81k original miles. One of 2995 built. Gm built these one year only and which ever
ones survived have finally reached antique status.
This truck was originally sold in Golden Colorado and made its way around from Montana ,
Starting with the engine. I had Campbell Automotive in Canada build a fresh engine since they specialize in these
trucks. $20, 000 invested into the engine and performance goodies leaves me with too much too list but here are the
highlights......
Engine block machined for 4 bolt main bearings , block fill added for strength, decked, squared, and balanced. Vortec
heads fully ported with complete valve job.(Manley valves (1.6 ex & 2.05 intake) All ARP studs (mains, heads and
rockers) Eagle H-beam rods, Forged Turbo pistons, Cam and all valve train components by Comp Cams. High volume oil
pump and Edelbrock high volume waterpump.
PT67 ball bearing Turbo with Turbonetics evolution wastegate. Big Air to air intercooler by RPM.
Methanol injected with Alky controller. RPM headers with 3" downpipe and full 3"exhaust thru a flowmaster. MSD
Distributor and Coil 75# injectors and walbro fuel pump. BIG STUFF 3 Controller took the place of the stock ECM.
The Big Stuff is fully tune-able with your lap top and controls the 4L80E trans that is now backed up to this
powerhouse.
The 700R4 that these trucks had was a joke. Trans was originally out of a 2003 silverado HD After $6000 invested in
the trans from George Blake at Prime gears the trans now lives happily in the syclone and will withstand more
horsepower then the current build will throw at it.
Its using a gibert HD front propshaft , the Rear prop was shortened to accept the 4L80E and the best U-joints were
installed. The front and rear Diffs and T-case remain stock and seem to hold up well on theses trucks from what I
have read. The rear diff is limited slip from the factory and I added a Trick-flow Differential support cover to
give it some added strength.
In the rear I'm using Cal-trac bars which are fully adjustable and allow the truck to hook up perfectly with no
wheel hop.
The front brakes were converted over to F-body Style dual piston calipers and rotor diameter increased to 12". The
vacuum booster was eliminated because that style booster is useless if you want to hold this thing back and spool
up at the line. Using a Hydobooster which runs off power steering holds it back at the line and stops the truck on
a dime as well. The ABS and A/C were removed to eliminate weight and clutter in the engine compartment. The Battery
lives in the bed of the truck in a Taylor battery box. 4 Goodyear eagle F-1 supercars tires have about a 1000 miles
on them.
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