Description:
This is all of our spread port and top sportsman / NOS experience tossed into one cylinder head. Dart made an excellent platform for RFD to build the most powerfull spread port head available. The BEST head for Top Sportsman , Top Dragster, Truck & Tractor pull or all out Marine using Nitrous. This is our most powerfull standard bore spacing head for NOS applications and larger engines like 706" +

Modified Oval intake port

Specifications:
> 14x4 Intake Valve Angle
> 2.52" Intake - 1.8" Exhaust Valves
> 65cc to 86cc Chambers & custom NOS chamber
> Flows 560+ cfm
> Pro-Stock Port & Valve Seat Technology
> Fits Both Cast Single 4 & Tunnel Ram Intakes
> Several port CnC Programs for up to 706" engines
> Custom Built for Your Application
> Fits 4.84" Standard Bore Space Blocks
> Sheet-Metal and Billet Intake Packages Available

Fully CnC Ported From $5,400 - bare

 >RFD custom cams, cast intakes, sheet metal intakes and Billet intakes available to match.

Options include

> Copper valve seats
> Xceldyne Titanium valves
> Triple roller PSI, PAC or Nex-Tech valve springs
> Diamond Custom pistons to RFD spec