Cam and valvetrain longevity....??? low duration high lift...
#951
Registered

Joined: Feb 2009
Posts: 8,356
Likes: 1,515
From: NW Michigan
Be interesting to build a database, on these "custom" cams.
Im sure everyone had to listen to speeches about area under the curve, exhaust port efficiency, rod angles, how tall decks suck becuase of the angles, and all the other reasons they need a custom tailored cam. And what they actually get, is a common cam everyone else is getting within a hair or two.
Im sure everyone had to listen to speeches about area under the curve, exhaust port efficiency, rod angles, how tall decks suck becuase of the angles, and all the other reasons they need a custom tailored cam. And what they actually get, is a common cam everyone else is getting within a hair or two.
Should start a new thread called rmbuilder or Bob grinds and have all post their cam cards.
#953
Thread Starter
Gold Member

Joined: Oct 2005
Posts: 11,688
Likes: 216
From: Olmsted Falls,Ohio Marblehead,Oh
#954
Registered

Joined: Jun 2009
Posts: 9,969
Likes: 6,461
From: Chicago
Cam design is pretty easy at Marine Kinetics.
#957
Registered

Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
Maybe, i can have guys email me their combos and cam specs, and i can make an easy to read list. Easier to compare that way, plus, bob cant yell at them for putting it on the interweb
#958
Registered

Joined: Jul 2004
Posts: 11,332
Likes: 73
From: chicago
Chit, i might have to open a dedicated email for this project.
#959
Registered

Joined: May 2009
Posts: 3,895
Likes: 124
From: Chicago, IL; Onekama, MI
Here is the card from my old engine I had Bob spec out.
439 CU
10.4:1 CR
Stealth Dual Plane
AFR 265 Ovals
Pro Systems 950
Never dyno'd the engine but based on the speeds I got it was a solid 530+ hp engine. Ran it for two seasons and then sold the engine. Either way here is the cam he designed for that engine.
[ATTACH=CONFIG]559953[/ATTACH]
439 CU
10.4:1 CR
Stealth Dual Plane
AFR 265 Ovals
Pro Systems 950
Never dyno'd the engine but based on the speeds I got it was a solid 530+ hp engine. Ran it for two seasons and then sold the engine. Either way here is the cam he designed for that engine.
[ATTACH=CONFIG]559953[/ATTACH]
#960
Thread Starter
Gold Member

Joined: Oct 2005
Posts: 11,688
Likes: 216
From: Olmsted Falls,Ohio Marblehead,Oh



