Pro Filer Performance Products
Sniper Big Block Chevy 24°, As Cast Conventional Port Heads, 320cc, Valve Jobbed, Each
Sniper Big Block Chevy 24°, As Cast Conventional Port Heads, 320cc, Valve Jobbed, Each
Regular price
$1,447.67 USD
Regular price
Sale price
$1,447.67 USD
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per
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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
Overview
| 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: | 320cc = 395cfm @.800" |
| 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: | 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
Pro Filer Sniper Big Block Chevy Heads with 320cc Intake Runner, 2.30" 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 320cc Runner
| Lift | Intake CFM | Exh CFM | % Exh/Int |
|---|---|---|---|
| 0.200 | 164 | 129 | 79% |
| 0.300 | 228 | 162 | 71% |
| 0.400 | 288 | 198 | 69% |
| 0.500 | 337 | 235 | 70% |
| 0.600 | 380 | 255 | 67% |
| 0.700 | 395 | 265 | 67% |
| 0.800 | 392 | 268 | 68% |
Air Flow Chart #174 - 320cc Runner
