1.72 Roller Rocker Questions

tmoss · 06-03-2005, 12:03 PM

At the cam face it lifts the same - NOT at the valve tip which is where the air enters. This debate occured on Corral too, and Buddy Rawls mocked up both with a dial indictor and degree wheel on an engine that he uses to check his cams and proved that the duration at the valve is longer. I forget how many degrees were added, but if your after every last deatail to make power - this is one that works.

HotRoddin · 06-04-2005, 12:35 AM

Quote:

Originally Posted by tmoss

At the cam face it lifts the same - NOT at the valve tip

agree with tmoss, more effective duration at the valve. Valve clears the seat at the same degree point, but reaches its max lift sooner, giving you more effective duration.

06-03-2005, 12:03 PM	#1
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Re: 1.72 Roller Rocker Questions At the cam face it lifts the same - NOT at the valve tip which is where the air enters. This debate occured on Corral too, and Buddy Rawls mocked up both with a dial indictor and degree wheel on an engine that he uses to check his cams and proved that the duration at the valve is longer. I forget how many degrees were added, but if your after every last deatail to make power - this is one that works. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

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