Description
Nason 185cc Performance Alloy Cylinder Head suit 302 Windsor.
This is a fully assembled brand new head with all casting, new performance valves, performance valve springs, retainers etc. Performance valve springs and retainers are pre-fitted, and suitable for our Stage 2, 3 and 4 Crow Cams. This head has no EGR port. Listing is for a single head, two needed for a Windsor.
Flow data (for reference, stock E7 heads flow only 150cfm Intake at .500″, GT40Ps flow around 185cfm):
| Intake Flow CFM @ H28 | Exhaust Flow CFM @ H28 |
| @.200″ = 114cfm | @.200″ = 102cfm |
| @.300″ = 167cfm | @.300″ = 143cfm |
| @.400″ = 218cfm | @.400″ = 152cfm |
| @.500″ = 236cfm | @.500″ = 152cfm |
| @.600″ = 251cfm | @.600″ = 152cfm |
Specifications:
- Combustion Chamber Volume 61cc
- Intake Port Volume 185cc
- Intake Port Size H x W 2.020″ x 1.126″
- Exhaust Port Volume 65cc
- Exhaust Port Size H x W 1.362″ x 1.354″
- Spark Plug Style Angle
- Valve Angle 23 Degree
- Valve Diameter – Inlet 2.020″
- Valve Diameter – Exhaust 1.600″
- Valve Material Stainless Steel
- Valve Spring Diameter 1.437″
- Valve Spring Installed Height 1.800″
- Valve Spring Pressure @ 1.800″ 105lbs
- Valve Spring Pressure @ 1.225″ 300lbs
- Valve Spring Maximum Lift 0.575″
- Valve Lock Type: 7 Degree
- Rocker Stud Size: 7/16″
- Guide Plate Pushrod Size: 5/16″
- Intake Gasket – Felpro: 1262
- Exhaust Gasket – Felpro: 1486
Manufacturer Part Number: 909302-A
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