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Product Description
Big Valve Shred Head, 32mm Intake Valve, everything we love about the Shred head now available with a 32mm intake valve! We cut out the stock intake seat, replace it with a bigger seat for the 32mm valve, blend it all together seamlessly for optimum velocity and flow, then unshroud the intake valve. The intake and exhaust valves are lapped in ensuring a perfect seal. Intake mount spacing is wider (48mm) than standard clone(43mm) heads, allowing you to mount a flange style slide carb directly to the head or accepts large style intake manifolds for larger carbs and more flow. This head is bolt on HP and can become even better with some basic port work.
Big Valve Shred Head
- Valve size
- Intake (included, lapped in, and unshrouded): 32mm x 2.65" long (stock length)
- Exhaust (included and lapped in): 25mm x 2.65" long (stock length)
- 18cc combustion chamber
- Max lift: .400"
- Wide exhaust studs for better positioning of exhaust port. (Your current exhaust pipe may need mounting holes enlarged or slotted to fit.)
- 48mm intake stud spacing (This head does not work with stock style carbs with out a custom adapter.)
Approximate spring pressure breakdown (without shim):
- 26lb spring
- seat: 10lb
- .265" lift: 36lb
- .310" lift: 42lb
- .400" lift: 53lb
- 36lb spring
- seat: 21lb
- .265" lift: 41lb
- .310" lift: 46lb
- .400" lift: 53lb
- 40lb dual spring
- seat: 25lb
- .265" lift: 51lb
- .310" lift: 56lb
- .400" lift: 67lb
- 55lb dual spring
- seat: 33lb
- .265" lift: 59lb
- .310" lift: 65lb
- .400" lift: 77lb
Fitment:
- Tillotson Engines
- Honda Engines
- Honda Clone Engines
- Predator Engines
Works well with a wide range of small block engine sizes. Accepts all Non Hemi style Valve Trains.
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