I am finished my cam install tomorrow I can't friggin wait!!!!!! It's a 227/239 blower grind. Lift is .560/.577 with 1.6 rr's and I had it ground on 115 lsa. It should make some really nice power especially with the blower and all the other stuff I'm throwing on the valvetrain. I even put on a CSI wp and cloyes double roller.

I know I won't be doing any really high revving right off the bat but without getting it dynoed, anybody have an estimate of where the power will start to fall off?

 

I would think with that high of a lsa it would probably start to fall off around 6100rpm. Unless i'm getting the lsa's backwards.

 

5900 or 6000 but im no expert with blowers, and an expert at all for that matter.

 

need more specs like advertised duration etc...

 

Isn't the advertised duration 227/239 @ fifty?? I thought it would rev to maybe 6300 ish. How does LSA have an effect on the rev range??

 

Usually, the lower the LSA, the higher the power band moves up. I would say you will max out at about 6000rpm.

 

I am going to go with the 6000-6200 range also

 

reason you need advertised duration (.006) & at .050 is to know the lobe profile, if its close to an XE grind it'll fall off at 6200rpm even if its a 236/242 on a 112. Many cams are like XE's, one example is the GTP 6 cam, thats basicly an XE grind.

 

To be honest Bunker that tells you very little about the rest of the profile It could be a slow start fast finish ramp with a wide top lobe or a fast start slow finish ramp with a small top lobe.

ONLY way to know for sure is to profile the ramp.

Check out the machine the use to profile cams a Pat Austins Pro Max some time