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420 HP in a 350 Chevy


Edelbrock Performer RPM Power Package Components for 350 c.i.d. Chevrolet:

Edelbrock Performer RPM intake manifold..........................#7101
Edelbrock Performer RPM camshaft kit.............................#7102
Edelbrock Performer RPM cylinder heads (angled plug).............#6071
or Edelbrock Performer RPM cylinder heads (straight plug)........#6073
Edelbrock Performer Series carburetor (750 cfm, manual choke)....#1407
Edelbrock Performer-Link Timing Chain Set........................#7800
Edelbrock valve springs
(included with heads; stock heads use #5703).....................#5767
Edelbrock retainers
(included with heads stock; heads use #9730).....................#9736
Edelbrock valve locks (included with heads)......................#9611


Shortblock Components:

Bore....................................................4.000" + .030"
Stroke..................................................3.480" (stock)
Crankshaft...............................................factory steel
Rods.........factory (polished and shotpeened) 5.700" center to center
Pistons................................................TRW #L2417+.030
Rings ........
Speed-Pro #R9343 +.065" Moly top and cast-iron second
5/64" x 5/64" x 3/16"
Head Gaskets Fel-Pro Perma-Torque Blue o-ring...................#1003


Test Engine Specs:

Main Bearings..................Michigan 77 #MS 909 HG# (.0025"-.0030")
Rod Bearings........................Michigan 77 #CB 663 (.002"-.0025")
Piston Wall clearance ......................................... .0065"
Ring End Gap clearance..............top ring .018" / second ring .014"
Rod Side clearance....................................... .014"-.016"
Compression ratio...............................................9.5:1
Ignition and timing................. M.S.D. 6A - 36° total at 3000 rpm
Headers..............
1-3/4" street header 32" primary tube 12" long, 3" diameter collector


Performer RPM Aluminum Cylinder Heads:

Intake port volume..............................................170cc
Intake valve size...............................................2.020"
Exhaust valve size..............................................1.600"
Exhaust port volume..............................................60cc
Combustion chamber size..........................................70cc
Material specs..................356 aluminum heat treated to T-6 spec
Refer to Building a Bowtie 420 HP Package for details on the buildup.




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