Converting A 258 To A 4.0 Head Hp. Gain?? [Archive]


Pirate4x4.Com > Brand Specific Tech > Jeep - Non Hardcore > Converting A 258 To A 4.0 Head Hp. Gain?? PDA : Converting A 258 To A 4.0 Head Hp. Gain?? MUD TOY 08-20-2007, 07:46 AM I Have Seen You Can Increase Hp About 35 To 40 By Converting The Heads. How Many Rpm's Would This Be At?? atblis 08-20-2007, 08:04 AM I believe that number includes the fuel injection swap as well. ________ California dispensaries (http://dispensaries.org/)