ProMaxx BBC 370cc CNC Ported Big Block Chevy Cylinder Heads

$1,940.00

 

The Shocker 370cc full CNC ported is the Big Dog in our BBC line. Its runner will feed your beast, street or strip. Flowing over 450 cfm with a 2.350 valve, this head will support big cubic inches and Big power that will not break the bank and will shock your competition and ours.

 

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Category:

Description

ProMaxx BBC 370cc CNC Ported (Bare Heads) = $1940 pr

Specs:
2.350″/1.880″ valve sizes,
121cc-127cc chambers(Your Choice)
370cc Intake Runner

Flow Specs @ 28″ w/2.350″/1.880″ w/30° Backcut valves

.200″ .300″ .400″ .500″ .600″ .700″ .800″ .900″ 1.00″
Intake 175 242 305 395 405 427 428 435 440

Exhaust 139 190 236 265 285 300 304 307 309

Add $750 for Assembled Heads for Hyd. Roller cams up to.650″ lift:
Stainless Steel Erson Competition Series 2.350″/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 $950 for Assembled Heads for Solid Roller cams up to.780″ lift:
Stainless Steel Erson Competition Series 2.350″/1.880″ Valves 11/32″
Erson Titanium Retainers, 10* Locks,7/16″ Rocker Studs, 3/8″ Guide Plates, Viton Seals
Erson 3870 Dual Cyloy 1.625″ Springs 235lb @ 2.00″ / 680 @ 1.300″ .780″ max lift
(Optional Spring upgrade Add $100 for Erson Professional E915170 1.640″ Dual Springs 280lbs@2.100″ / 794lbs@1.250″ up to .900″ lift)