Let’s talk about the mill that powers this beast. The 350 HO Deluxe featured here was put in place of the old stock 350 the truck originally came with. The enhancement of Vortec cylinder heads to the engine result in a 330 horsepower mill. With a 9.1 to 1 compression ratio, it’s pump gas friendly, and with its muscle car idle it’s cruise night cool. This information and picture was taken from the GM Performance website. By clicking the link below the graph you can research many other parts for ideas on your next HotRod truck.
350 HO Deluxe
350
HO Technical Information
Horsepower
330 @
5000 RPM
Torque
380 Ft.
Lbs. @ 38090
Max.
Recommended RPM
5500
Compression
Ratio
9.1:1
Block
10105123
Cast iron four bolt with one piece rear main seal
Crankshaft
14088527
Nodular cast iron
Connecting
Rods
10108688
PM steel
Pistons
12361371
Cast aluminum
Piston
Rings
14089025
Camshaft
24502476
Lift: .435"I, .460" E.
Duration @ .050: 212º I, 222º E.
Timing
Chain
14087014
Cylinder
Heads
12558060
Cast iron 64cc Vortec combustion chambers
Intake
Valves
10241743
1.94"
Exhaust
Valves
12550901
1.50"
Valve
Springs
10212811
Rocker
Arms
10089648
1.5 ratio
Valve
Lash
Zero
Spark
Plugs
R44TS
Gap @ .045 (300 HP 350)
41-932 Gap @ .060 (330 Hp 350)
R44LTS Gap @ .045 (330 Hp 350)
Rapid Fire #8 @ .035
