Import v2.50BI/23º SB — Complete
650+ hp out of 383s. 550 hp out of 383–400 pump-gas engines. A bargain for the power.
Package price: $2,895 — final price quoted to your combo.
Every head and porting package is sized to your combination. Send a work order and Chad will reply with a quote before any work starts.
Description
Import Dart-copy 23º small block heads. Fully CNC w/ SRH program, 5-angle valve job, MLS surface, Erson valve springs, competition valves, USA 10º steel retainers, USA machined 10º locks, USA studs, USA guide plates, USA seals. “I would not call this head cheap. I would call it less expensive… That’s a bad ass head!” — Darin Morgan
| Min CSA | 2.45 in² |
|---|---|
| Avg CSA | 2.57 in² |
| Chamber | 64–73 cc |
| Runner | 220 cc |
| Intake | 2.055 w/30º BC |
| Exhaust | 1.600 |
| Gasket | Fel Pro 1206 |
| Flow @ .600 | 301 / 221 |
| Flow @ 1.000 | 312 / 236 |
Package options
- .680 roller valve springs — $2,895
- .650 HYD roller valve springs — $2,895
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