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Pontiac 400 Engine Build - Pump Gas Pounder
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Heads
Brand340-cfm, 74cc KRE aluminum D-ports
ChamberHeart-shaped, fast-burn
Head ModsGasket match to TIP-120240 intake gasket,
CNC-ported to 340-cfm
Combustion Chamber Volume74 cc's
Maximum Flow at 28 Inches of Water
Intake341-cfm at 0.700 lift
Exhaust261-cfm at 0.700 lift
Compression Ratio11.41:1
ValvesFerrea SS 6000 series, 2.19/1.66-in
RetainersComp Cams 10-deg
KeepersComp Cams 10-deg
Valve GuidesBronze
Valve SealsPC
Rocker StudsARP
Rocker ArmsScorpion 1.6-ratio full roller
PushrodsComp Cams, 5/16-in, 9.450-in long

Cam
BrandComp Cams custom-grind solid roller
Duration at 0.050265/272-deg
Lift0.691/0.691-in
Centerline110-deg
Lobe Separation Angle110-deg
Installed Position+4-deg
Lifters BrandCrower roller
ValvespringsComp Cams
Seat/Open Pressure230/620-bs
Timing ChainRollmaster double-roller

Induction
Carb1050 Holley Dominator
JetsNo. 97 square
Intake ManifoldEdelbrock Victor 850 base with tapered spacer
ModsPorts matched to heads

Ignition
DistributorMSD Pro-Billet
AmplifierMSD 6AL
Coil BrandMSD blaster
WiresTaylor 8mm
Spark PlugsNKG No. 8
Total Timing31.5-deg advance locked out

Exhaust
Headers1.75-in Hedman
Collector Size3-in

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