TR220 and 1.85 rockers
10-29-2003, 12:12 PM
#1
TECH Enthusiast
Thread Starter
Join Date: Dec 2002
Location: College Staion, Texas
Posts: 546
Likes: 0
Received 0 Likes
on
0 Posts
TR220 and 1.85 rockers I'm about to swap to a TR220/555/556/114 and was wondering what changing rockers would do. Any experience with small cams and different rocker sizes? I'm trying to keep it dependable. TIA.
10-29-2003, 04:31 PM
#2
TECH Fanatic
Join Date: Jun 2003
Location: Further South than Hell
Posts: 1,070
Likes: 0
Received 0 Likes
on
0 Posts
It is thought that 1.85 rockers should not be used with cams over .550 lift. I guess with that one you would be borderline. U could use 1.75 instead of 1.70.
10-29-2003, 05:18 PM
#4
TECH Enthusiast
lets see, the TR220 cam is 553 lift, divided by the stock ratio of 1.7, multiplied by your new ratio (1.8), gives you a lift of ~.585 (someone correct me if im wrong)
Thunder Racing doesnt recomend the use of 1.8 rockers with their cams due to the fast ramp rate of the cam
Thunder Racing doesnt recomend the use of 1.8 rockers with their cams due to the fast ramp rate of the cam