Generation 1
The original design of the small block remained remarkably unchanged for its
production run, which began in 1955 and ended, in passenger vehicles, in 2003. The engine is still being built today for many aftermarket
applications, both to replace worn-out older engines and also by many builders as high-performance applications. There were, however many minor
changes made to the engine over the years.
LONG BLOCK -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,120.00
CH57AEVA
...
1969-1979
VALUE-A -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,270.00
CH57AEVB
...
1969-1979
VALUE-B -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,320.00
CH57BF
...
1969-1979
LONG BLOCK -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,249.00
CH57BFVA
...
1969-1979
VALUE-A -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,400.00
CH57BFVB
...
1969-1979
VALUE-B -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,449.00
CH57CI
...
1980-1985
LONG BLOCK -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,120.00
CH57CIB7
...
1969-1985
LONG BLOCK -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,120.00
CH57CIB7VA
...
1969-1985
VALUE-A -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,270.00
CH57CIB7VB
...
1969-1985
VALUE-B -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,320.00
CH57CIVA
...
1980-1985
VALUE-A -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,270.00
CH57CIVB
...
1980-1985
VALUE-B -- Passenger Cars & Light Duty 10-15 Series Trucks
$1,320.00
CH57DJ
...
1980-1985
LONG BLOCK -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,194.00
CH57DJB7
...
1969-1985
LONG BLOCK -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,249.00
CH57DJB7VA
...
1969-1985
VALUE-A -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,344.00
CH57DJB7VB
...
1969-1985
VALUE-B -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,394.00
CH57DJVA
...
1980-1985
VALUE-A -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,344.00
CH57DJVB
...
1980-1985
VALUE-B -- Passenger Cars & Light Duty 10-30 Series Trucks
$1,394.00
1986 - 1995
The troublesome leaky valve cover surfaces were changed such that cylinder
head mounting lip was raised and the bolt location was moved from 4 bolts on the perimeter, to 4 bolts down the centerline of the valve cover
(this design debuted on the Corvette in 1984, and Chevrolet 4.3L the year before). The troublesome rear main seal was changed from a 2-piece rope
design to a 1-piece design that used a mounting appliance to hold it in place. This necessitated a change in the flywheel/flexplate bolt pattern as
well. Also changed were the mounting angles of the center 2 bolts on each side of the intake manifold (from 90 degrees to 73 degrees) and the lifter
bosses were increased in height to accept roller lifters. The alloy heads for use in the Corvette still retain the non-angled bolts
(center 2 bolts attaching to the intake).
1986 - 1995 CHEVY 350CID / 5.7L
CH57EI
...
1986
2-BOLT
-- Passenger Cars & Light Duty 10-15 Series Trucks - Full Round Rear Main Seal Carbureted.
$1,230.00
CH57EIVA
...
1986
VALUE-A
-- Passenger Cars & Light Duty 10-15 Series Trucks - Full Round Rear Main Seal Carbureted.
$1,379.00
CH57FJ
...
1986
LONG BLOCK
-- Heavy Duty Series Trucks and Van's
$1,430.00
CH57FJHD
...
1986-1990
HEAVY DUTY - Roller Cam, Forged Pistons
-- Heavy Duty Series Trucks and Van's
1996 - 2000
This was the last change for the Generation I engine, and continued through
the end of the production run in 2003; all 1997-2003 Generation I engines were Vortec truck engines. The cylinder heads were redesigned using
improved ports and combustion chambers similar to those in the Generation II LT1. This change resulted in significant power increases.
CHEVY
