ProMaxx BBC 340cc CNC Ported Big Block Chevy Cylinder Heads

$1,730.00

 

The Shocker CNC 340cc BBC is a professional designed cylinder head using the latest CNC porting tools. These heads out flow the competition at a price that cannot be touched. Some comparable heads are double the cost of one Shocker 340 CNC. Flowing over 415 cfm, this head is on top of the heap. Now go out and shock the competition.

 

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Category:

Description

ProMaxx BBC 340cc CNC Ported (Bare Heads) = $1730 pr

Specs:
2.300″/1.880″ valve sizes,
121cc-127cc chambers(Your Choice)
340cc Intake Runner

Flow Specs @ 28″ w/2.300″/1.880″ w/30* Backcut valves

.200″ .300″ .400″ .500″ .600″ .700″ .800″ .900″
Intake 172 267 318 358 383 398 409 413

Exhaust 139 190 236 265 285 300 304 307

Add $500 for Assembled Heads for Flat Tappet cams up to.650″ lift:
Stainless Steel Erson Competition Series 2.300″/1.880″ Valves 11/32″
Erson 3425 Dual 1.460″ Springs 125lb @ 1.900″ / 415 @ 1.250″ .650″ max lift
Erson Steel Retainers, 7* Locks,7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals

Add $600 for Assembled Heads for Hyd. Roller cams up to.650″ lift:
Stainless Steel Erson Competition Series 2.300″/1.880″ Valves 11/32″
Erson 3600 Dual 1.540″ Springs 180lb @ 1.950″ / 500 @ 1.300″ .700″ max lift
Erson Steel Retainers, 10* Locks,7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals

Add $800 for Assembled Heads for Solid Roller cams up to.780″ lift:
Stainless Steel Erson Competition Series 2.300″/1.880″ Valves 11/32″
Erson 3870 Dual Cyloy 1.625″ Springs 235lb @ 2.00″ / 680 @ 1.300″ .780″ max lift
Erson Titanium Retainers, 10* Locks,7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals