rocker arm ratio

gtss

Member

Apr 30, 2002

133

2

19

Airdrie,Alberta

Jan 17, 2008

#1

• Jan 17, 2008

• #1

Can anyone confirm for me what my rocker arm ratio is, every book I own either doesn't say at all, or I can only find the spec for newer most often 302's

i have 289 heads, casting number C8OE with the old "rail " type rocker arms
I believe they are 1.6:1 but would like to be sure
thanks in advance
gtss

 

PUNISHER RACING

Active Member

Aug 27, 2007

1,124

0

36

FORD CITY, PA.

Jan 18, 2008

#2

• Jan 18, 2008

• #2

1.6

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Jan 18, 2008

#3

• Jan 18, 2008

• #3

The only small blocks with other than 1.6 ratio rockers were the 69-70 Boss 302's and the 90's Cobra 5.0. The Boss had 1.72's, the Cobra roller rockers are 1.7's.

 

gtss

Member

Apr 30, 2002

133

2

19

Airdrie,Alberta

Jan 18, 2008

#4

• Jan 18, 2008

• #4

as I suspected,
thanks for the confirmation