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Pro Filer Performance Products

Sniper Big Block Chevy 24°, As Cast Conventional Port Heads, 370cc, Valve Jobbed, Each

Sniper Big Block Chevy 24°, As Cast Conventional Port Heads, 370cc, Valve Jobbed, Each

Regular price $1,499.95 USD
Regular price Sale price $1,499.95 USD
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General Description

The ProFiler Sniper Big Block Chevy, 24° Conventional Port Cylinder Heads provide peak performance and precision with a your choice in three different intake port options. Constructed with high-grade aluminum and state-of-the-art CNC or AS-Cast Chamber options, these heads are engineered for maximum power and reliable quality.


  • 290cc, 320cc or 370cc Intake Ports Available
  • 119cc Heart Shaped Combustion Chamber (CNC or AS-Cast)
  • Up to 2.350 Intake & 1.850 Exhaust Valves
  • Accepts up to 1.650 O.D. Springs


Material:Aerospace Specification, A356 Aluminum Alloy (Primary Virgin Ingot)
Valve Angle:24 Degree valve angle
Intake Port Volume & Shape:Modified Oval Port, Precision As Cast 370cc
Intake Port Flow:370cc = 400cfm @.800 lift.
Combustion Chamber:Heart-Shaped/Fast-Burn,As-Cast/CNC - 119cc, can be reduced to 105cc
Milling:Angle - .0070" per cc Flat - .0050" per cc
Spring Pocket:Maximum of 1.625" (no deeper)
Bore Spacing:Standard BBC 4.840"
Intake Valve Diameter:370cc Head (Only) 2.35" + .450 long for 2.100" install height
Exhaust Valve Diameter:370cc Head (only) 1.850" .150 long for 2.100" install height.
Deck Thickness:1/2" deck for Nitrous and Blown applications
Valve Guides:Manganese Bronze to assist in extending valve life .502" OD
Valve Seats:Steel or Copper Alloy
Valve Covers:Uses Standard Big Block Chevy
Spark Plugs:Revised location to improve flame travel. Machined for a gasketed 3/4" reach plug NGK R5671A-7 or colder
Valve Train:Uses Stock or Most Aftermarket Rocker Systems (shaft mount recommended)
Head Bolts:Requires 1" longer head bolt next to exhaust ports
Accessories:Heads drilled and taped for standard accessories (alternator mount holes)


Flow Numbers

Pro Filer Sniper Big Block Chevy Heads with 370cc Intake Runner, 2.35" Intake Valve and 1.85" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.


Air Flow Detail #174 BBC Sniper 370cc Runner

LiftIntake CFMExh CFM% Exh/Int

Air Flow Chart #174 - 370cc Runner

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