[Joe Llamahead]

Traced a oil leak on my 720 engine to a crack just below where the cylinder bolts to the case, so I'm tearing it apart and welding/ reinforcing the case.

I was revving to 8,000 rpm, I'm thinking I wanna drop back to 7,500 and readjust the clutching accordingly so I'm thinking I wil advance the cam timing, to shift the power down a few rpm.
I'm running a raptor stage II cam and wondering what folks that take the time to degree them in set them up at ?

 

[LBR]

Joe...have you called Cameron about this yet?

...sent with TapaTalk...please excuse brevity & no smileys

 

[Joe Llamahead]

Joe...have you called Cameron about this yet?

...sent with TapaTalk...please excuse brevity & no smileys

Nope, guess I could......But I'm a DIYer and he's trying to make a living, I hate to waste his time.

 

[Joe Llamahead]

So everybody just drops the cam in and goes? :eek2:
Hmmmm

 

[AZCourt]

I set mine where the hot cams cam card said to set it and it made power to 8800 where I stopped the pull. It was still climbing at that point. I believe we had to retard the cam 5 or 6 degrees to get it to spec on the cam card. When we started the first dyno pulls before changing the timing it was about 8hp lower peak and peaked at 7500.

That was all with a stage three hot cam.

 

[Joe Llamahead]

Court, I don't quite follow,are you saying you gave up 8 HP dropping 1,300 rpm?

do you remember what spec you settled on?

 

[AZCourt]

No, I'm saying it had 68 peak hp at 7500 rpm before we degreed the cam. It dropped off after that rpm. After we degreed the cam it had 76 hp at 8800 and was still climbing.

Crank hp

 

[Joe Llamahead]

No, I'm saying it had 68 peak hp at 7500 rpm before we degreed the cam. It dropped off after that rpm. After we degreed the cam it had 76 hp at 8800 and was still climbing.

Crank hp

Thanks, that makes sense wow just a few degrees Made a bug difference!

 

[AZCourt]

Yeah, it was kind of shocking. Just goes to show how if you spend the time and get things right you can really squeak a bunch of power out of these things. Cam timing is just one small part of a big puzzle.