1.7 rocker arm

M

mercurycapri

Member

May 30, 2006

211

2

18

washington

Aug 10, 2011

#1

• Aug 10, 2011

• #1

I currently have a 226 duration camshaft with .474 lift. I want to go with a aluminum roller rocker arms with 1.7 ratio. I believe that should set me close to .504 lift. Will I have clearance issues with the pistons? I have a stock 1984 302 with GT40 P heads. Ive heard guys claiming they have used camshafts with 230 duration and 512 lift with stock 302.

 

RangerJoe

I leave the horn on while driving

15 Year Member

Apr 26, 2010

2,560

1,146

184

Georgia

Aug 10, 2011

#2

• Aug 10, 2011

• #2

No way to know without checking, but PTV clearance usually has more to do with duration...although lift does play a part.

 

PUNISHER RACING

Active Member

Aug 27, 2007

1,124

0

36

FORD CITY, PA.

Aug 10, 2011

#3

• Aug 10, 2011

• #3

I HAVE RUN THE X CAM WITH A BONE STOCK LONG BLOCK WITH NO ISSUES. sorry bout the caps

 

tmoss

Gettin Wired

Founding Member

Jun 28, 2001

7,153

32

128

Saint Louis, MO

Aug 11, 2011

#4

• Aug 11, 2011

• #4

if you start having higher rpm breakup issues, keep the valve springs in mind as the opening and closing rate will be higher now.