Skip to product information
1 of 3

Pro Filer Performance Products

Sniper Big Block Chevy 24°, As Cast Conventional Port Heads, 290cc, Valve Jobbed, Each

Sniper Big Block Chevy 24°, As Cast Conventional Port Heads, 290cc, Valve Jobbed, Each

Regular price $1,447.67 USD
Regular price Sale price $1,447.67 USD
Sale Sold out
Chamber Finish
Valve Job Size

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 290cc, 320cc or 370cc
Intake Port Flow:290cc = 365cfm @.800" 
Combustion Chamber:Heart-Shaped/Fast-Burn, As-Cast or 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:2.225" - 2.300" / +.250" long
Exhaust Valve Diameter:1.880"  +.100" long
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
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

Air Flow Detail #174 BBC Sniper Head - 290cc Runner

Pro Filer Sniper Big Block Chevy Heads with 290cc Intake Runner, 2.28" Intake Valve and 1.88" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.

Air Flow Detail #174 BBC Sniper 290cc Runner

LiftIntake CFMExh CFM% Exh/Int

Air Flow Chart #174 - 290cc Runner


View full details