Artilce on STS from Truck Trend Magazine - The Day
Artilce on STS from Truck Trend Magazine
1997 Paxton SN93 Rebuild
A/C Chilling Effect
The Trick Dipstick
Shifting into High Gear:
MODIFYING YOUR 454SS FUEL SYSTEM FOR STREET PERFOR
MOVING YOUR 454SS WITH A CRANE
SSnow, SSleet, and your SS
“Plug-N-Play” Fuel Injection Systems
4L80E Transmission Problems
esCovering your tail
454SS Custom Plug Wires
The poor man's 454ss
Bump 'N' Grind Porting
Lowering your 454SS
One more gear
Common Problems Of The 454SS Pick-Up Trucks
Tweek's summer tweek....
True Dual Exhaust
Setting the 454SS TBI idle speed
Body and Suspension
1990 Recall Information.
1991 Recall Information.
1992 Recall Information.
1993 Recall Info
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Electronic Fuel Enjection
is a computerized fuel metering system designed to deliver fuel more effeciently
than a carburator system.
The 454SS (And Chevy trucks alike) use the EFI. The EFI System uses a throttle body
to deliver the fuel in precise, metered amounts. The throttle body recieves input
from the Electronic Engine Contols and delivers the precise amount of fuel required
into the intake manifold.
in contrast, a carburator mechanically delivers fuel in relation to the load and speed
of the engine. It is more difficult for a carburator to adjust quickly and effeciantly
ti different variables, so perfect carburation is difficult to maintain.
7.4 liter (V8) w/EFI
This engine was installed in the 91 454SS and also 3500 and selected 2500 series
Chevrolet trucks with single rear wheels. New to this engine in 91 were new intake
valves and new transmission cooler line brackets for improved reliability.
Engine ordering Code L19
Bore and stroke (in.) 4.0 x 4.25
Compression Ratio 7.9 to 1 SAE Net Horsepower at RPM 230 @ 3600
SAE Net Torque (lb-ft) at RPM 385 @ 1600
7.4 Liter 255HP @ 4,000 rpm 405 Lb of torque @ 2400 rpm
400 and 4L80E transmission
Automatic 3 speed 400
Automatic 4 speed w/overdrive 4L80E
Lock Up Clutch
Ring Gear Teeth
Ring Gear Diameter