Piston and con rod dilemma

rumblefish360 said

What duration? Cam manufacturer? What HP level/range?

If your looking to step up, depending on what arena your driving in, the choice of new rods is probably impossible to beat over reworking the old rods.

Hyper-U slugs are fine for street and strip performance. A forged slug is top dog and will take alot more abuse at the track for a longer period of time.

If your doing a "primary" street engine, then a set of inexpensive Eagle or Scat rod thatare good till 500 HP will do you well coupled with a set of Hyper-U slugs.

IMO, I doubt you'll need to spin the engine to 7grand to make max power. Highly doubt it.

Click to expand...

288/288 adv duration, 244/244 at .050" lift. Comp magnum 288r. HP range is going to be 420-450 HP. The cam is advertised to make power from 3k-6500, should spin up to 7k no problem.
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=684&sb=2

Im going to be running 3.91 gears and a 4 speed in a 3k pound car. The heads im using flowed 260 at .500, using a single plane torker II 340 or edelbrock rpm with a 750 cfm carbbie. Im not going to be spraying the motor and it it going to be mostly a street/strip car with maybe 20 runs down the track ever few months.

This is why i figured that maybe light is the way to go, a set of kb hypers and scat I beams would weigh almost 600 grams lighter than the stock setup.