All American 23 Degree Small Block Chevy Racing Heads

All American Aluminum 23° SBC Racing Heads

Starting at
$506.86 Each

Series P/N: 176 (QTY & OPTIONS ADDED TO BASE PRICE AT CHECKOUT)

  • End pads drilled and tapped for accessories
  • 185cc, 195cc and 210cc Intake Ports
  • 64cc, 70cc and 72cc Chambers
  • Bronze guides for reduced stem wear
  • Available with or without water jackets

Whether it's circle track, drag racing or street performance the Pro-Filer All-American Series SBC cylinder heads are the solution for your big horsepower needs. Featuring powerful port designs that are packed with air speed and unbeatable, made in the U.S.A., casting technology. The All-American series gives you an edge on the market providing awesome and reliable power.

Now available in various intake port runner sizes, and three different chamber sizes, you can find the right fit for your application.

All American Series by Pro-Filer

Series P/N: 176 Configuration Options


Intake Port Size
Chamber Size & Finish
Spark Plug
Casting Style
Note: Solid only available on 210cc Head
Valve JOB Size
Note: 2.08 Intake Valve Option Available on 210cc Only
Assembly Options
Add Stainless Valves, Valves Springs, Retainers and Locks
Note: Solid Roller Only Available on 210cc Head

Heads include 11/32 Bronze Valve Guides, Steel Seats and 3 Angle Valve Job.

Your choice of 185cc, 195cc or 210cc Intake Ports, 64cc, 70cc or 72cc Chambers and Straight or Angle Plug Locations.

Qty
Starting at
$506.86 Each

Series P/N: 176 (QTY & OPTIONS ADDED TO BASE PRICE AT CHECKOUT)

Details


Series P/N: 176 SBC Head Specifications

Material:Aerospace Specification, A356 Aluminum Alloy (Primary Virgin Ingot)
Valve Angle:23° valve angle provides bolt on compatibility for stock accessories
Bore Spacing: Standard
Intake Port Volume & Shape: Rectangle Shaped, PRECISION As-Cast 185cc, 195cc & 210cc
Combustion Chamber: Heart-Shaped, As-Cast - 64cc, 70cc, 72cc
Application: High Performance (i.e. street/strip/marine)
Rocker System: Improved Solid Rocker Bar for added stability. May use standard or most aftermarket rockers
Exhaust Valve Diameter:1.600"
Intake Port Flow:185cc 275cfm @ .800" lift, 195cc 276cfm @ .800" lift, 210cc 297cfm @ .800" lift
Intake Valve Diameter: 2.020"-2.080"
Deck Thickness:1/2"
Milling:Angle - .0070" per cc Flat - .0050" per cc
Spark Plugs:Revised location to improve flame travel. .750 Reach, Gasketed (NGK R5671A-7 or colder)
Valve Train:Standard
Valve Guides:Manganese Bronze to assist in extending valve life
Spring Pocket:Maximum of 1.650 (no deeper)
Valve Seats: Steel
Valve Length:Intake: stock length (1.800" install), + .100 long (1.900 install), Exhaust: stock length (1.800" install), + .100 long (1.900 install)
Valve Covers: Drilled for both, center and rail bolt
Engine Size:185cc - 350+cid / 6000 rpm, 195cc - 350cid - 383cid / 6500rpm, 210cc - 383cid-427cid / 7000rpm

Air Flow Detail #176 SBC All American Head - 185cc Runner

Pro Filer Small Block Chevy All American Heads with 185cc Intake Runner, 2.02" Intake Valve and 1.60" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.

Air Flow Detail #176 - 185cc Runner

LiftIntake CFMExh CFM% Exh/Int
0.200 135 110 81%
0.300 201 145 72%
0.400 245 180 73%
0.500 265 206 78%
0.600 270 213 79%
0.700 272 216 79%
0.800 275 218 79%

Air Flow Chart #176 - 185cc Runner

PN176 All American 185cc Runner Air Flow Chart

Air Flow Detail #176 SBC All American Head - 195cc Runner

Pro Filer Small Block Chevy All American Heads with 195cc Intake Runner, 2.02" Intake Valve and 1.60" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.

Air Flow Detail #176 - 195cc Runner

LiftIntake CFMExh CFM% Exh/Int
0.200 145 110 76%
0.300 209 145 69%
0.400 254 180 71%
0.500 273 206 75%
0.600 274 213 78%
0.700 276 216 78%
0.800 276 218 79%

Air Flow Chart #176 - 195cc Runner

PN176 All American 195cc Runner Air Flow Chart

Air Flow Detail #176 SBC All American Head - 210cc Runner

Pro Filer Small Block Chevy All American Heads with 210cc Intake Runner, 2.08" Intake Valve and 1.60" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.

Air Flow Detail #176 - 210cc Runner

LiftIntake CFMExh CFM% Exh/Int
0.200 145 110 76%
0.300 207 145 70%
0.400 258 180 70%
0.500 283 206 73%
0.600 285 213 75%
0.700 291 216 74%
0.800 297 218 73%

Air Flow Chart #176 - 210cc Runner

PN176 All American 210cc Runner Air Flow Chart

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