Not all high horsepower 3800s have to be loud. This 340whp setup runs a stock Exhaust, stock manifolds, an engine that hasn't been cracked open, gets 28mpg on the expressway and even has luxuries like navigation and bluetooth. Whether you want loud and ostentatious or quiet and subdued we can get your 3800 set up.
3800 Series 2 Modding Basics
Mods and Vendors list
Short Stack Intercooler
UD Water Pump Pulley
UD Alternator Pulley
Solid Motor Mounts
3 Inch Downpipe
Shortened Dog Bones
Rear Strut Tower Brace
Aeroforce Scan Gauge
3 gauge Pod
Throttle Body Heat Shield
Throttle Body Spacers
Ebay user "American Superchargers"
Modular Pulley System
All other parts not listed were purchased at various auto parts stores,Ebay
users I dont remember and Walmart.
Cartuning Performance Grand Prix GTP Turbo runs 10.93 @ 127.55 mph
10.9 run in full street weight (minus mufflers). Would have been a quicker
run if 3rd gear would have held (you can hear it switching between 2nd and
3rd...I also let off the gas at the 1/8th mile to try and make it shift,
and it ended up going into 4th for the rest of the run!)
Grand Prix GTP knock after machine shop mistake
Payed a machine shop to replace a piston in the car after valve to piston
contact, also caused by the machine shop. They had to remove the rod from
the crank, and were instructed to replace the bearing if need be. They
didn't and a day later and 85 miles later, it was knocking.
I am an ASE certified mechanic, not some backyard billy bob mechanic. I
build race engines, but choose not to do short block rotating assyembly due
to the liability. I have built tons of these engines, and this was the
first to have a knock. I know it was not my fault, because the cylinder
knocking was also the cylinder they took apart. The reason the damn valve
hit the head, was because they didn't machine my new bronze valve guides
enough, and a valve stuck in the head during engine break in.
Twincharged GTP Running 12psi
My Twincharged GTP Running 12 psi (About 400hp) on the new engine and
tranny...... Not as strong as 17psi (500hp) but still feels good !!! This
is without the bypass valve. It's less laggy this way...
Messing around with a friends Modded 2001 Buick LeSabre
GTP, cammed, P&P blower and heads and headers
1998 GTP with XP cam, CAI, p&p blower and heads, headers, 3.0 pulley, ZZP
fuel rails, 78mm TB, double roller, A/C, balance shaft, EGR, cat, res.
delete, ZZP tune, and supporting mods.