As you may be aware, this requires that you also change the intake manifold, which will involve redo-ing the water hoses, sensors, EGR valves, PCV system, linkage for cruise control and accelerator, plus the transmission kickdown etc. Are you sure you're up for this? The camshaft would be a completely separate issue. If you're trying to build a high performance engine, you'd be much better off finding a healthy 360 and bolting that in. Dick Benjamin ----- Original Message ----- From: "Michael Frame" <trackermike3@xxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Thursday, March 06, 2003 9:59 AM Subject: IML: Manifold > I want to change from two barrell to four barrell on my 81, 318,what > carburator would be best? Would the swap be something I could do myself? > And would the cashaft need to be changed? > > Okie Bowler > > >