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350 Rebuild Kit

350 chevy Kit for all years and models of the chevrolet small block engine family

Jump to OEM kits
Jump to performance horsepower combinations
Jump to our small block stroker kit page including the 383 stroker kit

The small block chevrolet engine has gone through several changes over the years since its induction to the Chevy engine family back in the early 60's. The first notable change was in 1969 when all small blocks went to the larger 2.100 rod journal and the 2.449 main journal size.
In 1979/1980 they moved the dipstick location from the left hand (drivers side) to the right hand location that was used all the way up to 2002.
The next change to the engine came in 1985 when chevrolet went from a 2 piece rear main seal to a 1 piece rear main seal, decreasing the overall rear main seal leaks associated with the engine and making it a less labor intensive repair if it did leak.
In 1987 Chevrolet brought about a new valve cover bolt pattern which moved the location of the bolts from the outer rails of the cover to the actual centerline of the cover, giving an more even distribution of force on the actual gasket, once again eliminating the majority of the valve cover leaks associated with the side rail bolt design. In 1987 the other change that was made was to the bolt pattern on the intake manifold. The center 4 intake manifold bolts were angled upwards allowing easier accessibility to the bolt heads. This change made it so that the intake manifold from 1986 and earlier would not work with the 1987 and later heads. The combustion chamber of the cylinder head design after 1987 went back to the 64cc size from that was used in the late 60's as opposed to the 76 cc chamber used through most of the 70's and early 80's.
In 1996 the final change to the engine family was made with the induction of the final Vortec version of the engine. This change implemented a new plastic timing cover and once again a new intake manifold bolt pattern and a raised Vortec intake runner.
Please note that during the late 60's and early 70's that there were several different size combustion chambers used in the cylinder heads and you will need to double check your casting number to confirm what size chamber you have for compression ratio purposes. Most all the heads used after 1976 were the same chamber size up to the mid 80's when Chevrolet had some model specific heads produced for cars like the Corvette and the Camaro.

OEM Kits By Year
67-86
5.7L
Passenger Car and Truck Exc. H. P. Models
87-93
5.7L
Roller Cam Passenger Car
90-92
5.7L
Vin 7 Roller Cam Police and H.P Models
92-97
5.7L
Vin P LT1 and LT4 Camshaft Not Available
Camshaft and lifters not included
N/A
68-86
5.7L
Truck
40,50&60 Series
Heavy Duty
87-95
5.7L
Truck Vin K
Non-Roller Cam Engine
Exc. Multi port injection models
96-02
5.7L
Truck Vin R Vortec
Camshaft and lifters not included

All Performance Kits below are for 1969-1984 model year engines.
Call to have a performance kit built for your 1985 and later engines

300 Horse Power Kit for use with 76cc heads:
(Works with mid grade fuel)
Flat Top Pistons, Molly Rings, Felpro Gaskets, Clevite Bearings, Cam Bearings,
High Volume Melling Oil Pump. RV Camshaft, Double Roller Premium Timing Set. and Lifters.
The 300 HP is calculated at approximately 9.0 compression ratio with a 76cc factory head.
.
$769 Call
To Order
300 Horse Power Kit for use with 76CC heads:
Includes New Crankshaft and Connecting Rods Already Balanced and Ready For Installation

Flat Top Hypereutectic Pistons, Molly Rings, Felpro Gaskets, Clevite Bearings, Cam Bearings,
High Volume Oil Pump. RV Camshaft, Double Roller Premium Timing Set. and Lifters.
New Eagle Crankshaft, Pressed Pin Connecting Rods, Assembled, Balanced Internally.
The 300 HP is calculated using approximately 9.0 compression ratio with a 76cc factory head.
345 Horse Power Kit for use with 64CC heads:
Must Use Premium Fuel!
Flat Top Hypereutectic Pistons, Molly Rings, Felpro Gaskets, Clevite Bearings, Cam Bearings,
High Volume Melling Oil Pump. RV Camshaft, Double Roller Premium Timing Set. and Lifters.
The 345 HP is calculated using a 10.0 compression ratio with a 64cc factory head.
$799 Call
To Order
345 Horse Power Kit for use with 64CC heads:
Includes New Crankshaft and Connecting Rods Already Balanced and Ready For Installation
Must Use Premium Fuel or 76cc head 300 hp with 76cc head.
Flat Top Hypereutectic Pistons, Molly Rings, Felpro Gaskets, Clevite Bearings, Cam Bearings,
High Volume Oil Pump. RV Camshaft, Double Roller Premium Timing Set. and Lifters.
New Eagle Crankshaft, New Pressed Pin Connecting Rods, Assembled, Balanced Internally.
The 345 HP is calculated using a 10.0 compression ratio with a 64cc factory head.
Purchase here
$599.99
Ch350MK400

400 Horse Power Kit for use with 64cc heads:
Must Use Premium Fuel !
Flat top Forged Pistons, Molly rings, Felpro Gaskets,Clevite Bearings, Cam Bearings,
High Volume Oil Pump, Custom Ground Performance Camshaft, Double Roller Timing Set and Lifters.

The 400 HP is calculated using a 10.2 compression ratio with 64cc heads.
Must check valve springs for clearance.

450 Horse Power Kit:
Use with late model vortec heads.
Flat Top Pistons, Molly Rings, Felpro Gaskets, Clevite P series Bearings,Cam Bearings,
Custom Ground Performance Cams Camshaft, True Roller Timing Chain and Gear Set and Lifters.
450 HP Made with 10.1 Comp, Professional Products Intake, HEI Ignition System and a 700 CFM Holley Carb.

Purchase here
$2680.15
CH350MK500

500 Horse Power Kit with Heads:
Kit Includes Edelbrock Aluminum Heads Assembled and ready to bolt on.
Must use hardened push rods and standard type rockers.
Forged Pistons. Molly Rings. Felpro Gaskets, Clevite Bearings, Cam Bearings,
High Volume Melling Oil Pump, Competition Cams Camshaft, Double Roller Timing Set
Felpro Performance Head Gaskets and Felpro Performance Intake Gaskets.

We have more kits that are not listed here. If we do not already have a performance kit built for your application we will after you call.

compete 450 hp crate engine sith dyno run
450 HP Crate Engine!!


No Core Charge!
Comes with Ignition, Carburetor, Water Pump, Timing Tab
Timing Cover, and Dipstick, All Covers, Prof. Prod. Intake..
Completely Dyno Tuned, Carb Adjusted and Timing Curve Set.
Over $6450.00 Value Now Only
$5899.95 (Click to Order)


New Flexplate $38.00
New Flywheel $145.00
New Damper Included

Call 1-877-354-3812
to order your Parts Today!

Contact us Via Email

About RPM Machine | Specials | Newsletter
RPM Machine-Performance Auto Parts
PO Box 281
Cedar Valley, Utah 84013
We carry parts from scat, je, wiseco, ross, crower, callies, eagle, cat, eagle
Most of our rotating assemblies include forged pistons
and 4340 steelcranks

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