heads

Well, I'm not sure what you want out of a 340 - but here's what I have... Stock .030 block w/block fill up to the bottom of the freeze plugs, chromed and knife edged Lunati crank - stock stroke, Eagle 'H' beam rods, 13.5:1 Arias pistons, the aforementioned cast iron 'X' heads, a Comp Cam roller unit very similar to the one you're using, and a Victor jr. Edelbrock intake (untuoched). No gear drive, and it doesn't even have double valve springs. This engine displaces just over 340 inches (346 I think). It made 507 hp @ 7200 and 445 lbs. ft. @ 4700 rpm. So far it has propelled the 3400 lb. Barracuda it's in to a 12.33 @ 110 mph, (1/4 mile). I know that doesn't sound too impressive, but it SMOKED the tires past the 330 ft. mark at the dragstrip. I think a set of sllicks will get it into low 11 second zone - possibly even the high 10's. The motor seems like it runs better every time I drive it. It actually puts about 3'' of air under the front tires right before it blows the rear ones off. Since I drive it all over the place I haven't really gotten too serious about making it hook, but I think I may borrow a set of tires this spring and find out what it can break. The car has a 4-link w/coil overs and 3 way adjustable shocks front and rear, a 5.38 Dana 60 and a 904 w/5000 rpm converter, low gear set, and a trans brake. I'm pretty sure a set of tires will go a long ways towards sticking it. The point here is that you shouldn't sell the little 340 short, it's plenty capable of putting a full bodied Duster into the 10's without nitrous. :!: