Most cam makers will use the same spec's for the 250 or 292 so the RV cam will be a little better in the 292. Bigger cubic inches take bigger cams easyer so it shouldn't be quite so bad at idle. As far as fuel mileage, any thing to far from stock could hurt it a bit. If you are going all out with headers and new carb/intake, then a bigger cam should go with them. Save your money on roller rocker arms, you will see no advantage to them, they are for high lift cams with lots of valve spring pressure. Did you install screw in studs for the rocker arms in the head? You should if you are planning any hard driving or $300 worth of rocker arms.
Its really up to you and what you want, you can get as many opinions as you want, and they all will be different. Joe
PS, have you been to the Inliners.org site? go there and search for 292 hop up
Last edited by Joe H; 11/16/2007 4:12 PM.
