Its 227/239 duration, .560"/.577 with 1.6RR 114lobe (not 227/233)

So this cam, that was recommeded by alot of people is a POS?

Why?

 

Ok, so the lobes are hard to control. But what valve springs could work?
The valves are +0.100" LS1 style 8mm, max 6300rpm, and 15psi boost.

Have looked at
AFR 8017 #135@1.850 rate #360 dual LS1 type
CC 26120 #148@1.800 rate #370 Bee-hive
CC 26918 #125@1.800 rate #372 Redesigns Bee-hive

Will install so I get 150lbs seat pressure

Lift is 0.577

/N.

 

I'm not the valvetrain guy, but I listen a lot. Some lobes are just too difficult to control. Sure there are very high-end springs from folks like PAC, but do you really want to spend $500+ on valve springs to try to control a difficult lobe?

It would be cheaper, and probably better all around to get a new cam and the correct springs 'n things.


My $.02

 

A nice thing with boost is that you don't need to spin it to the moon to make big hp. The force exerted by the mass on the valve side is going to increase as the square of the rpm, so if you keep the R's down you make the whole connundrum much simpler. If you are using a Ti retainer I think you might be ok with any of these springs (if you keep the R's down). Pulley the blower to make max boost around 6,000rpm and try it would be my suggestion.

Rich

 

Hmmm... I think I will get a new cam next winter but I'd rather not lift the engine again this winter, have to many ongoing projects......

Will not rev beyond 6k.
I think with my engine the peak power should be a bit lower than 6k with the cam.

The easiest way is AFR springs, then I can get all the parts from AFR.


/N.