Harland Sharp RR's
Harland Sharp RR's I am going to install my 1.7 Harland Sharp roller rockers tomorrow night and had a few questions. Can I just R+R them like stockers and torque to 22 ft lbs? I have stock length pushrods, stock replacement lifters, and 253/257 duration 643/648 lift cam. I am hoping I won't have to screw around with shims. Any help is greatly appreciated.
Launching!
Joined: May 2004
Posts: 231
Likes: 0
From: Philly
I got these on my T/A and I'm taking them off. Even with 918 springs, I get valve float in the 6K range, and possibly power loss, as I was expecting to dyno around 390/360 instead of the numbers you see in my sig. Several people from this site have recommended staying with stock rockers. Just a heads up.
TECH Fanatic
Joined: Dec 2002
Posts: 1,084
Likes: 0
From: Bring it........ b*tch
Originally Posted by SsZERO
I got these on my T/A and I'm taking them off. Even with 918 springs, I get valve float in the 6K range, and possibly power loss, as I was expecting to dyno around 390/360 instead of the numbers you see in my sig. Several people from this site have recommended staying with stock rockers. Just a heads up.
I just installed the rockers, I am a little dissapointed with the fit. The rockers on the ends rub on the head casting. I have heard of this happening before, but I was hoping I could get away clean. I torqued the rockers to 22 ft lbs, the motor turns over all the way, but I can see where the back of the rocker is rubbing on the head. 
I am probably going to pull the heads and use a dremel to "clearance" the offending areas. Damn I hate aftermarket parts sometimes! 
I am probably going to pull the heads and use a dremel to "clearance" the offending areas. Damn I hate aftermarket parts sometimes! Trending Topics
Launching!
Joined: May 2004
Posts: 231
Likes: 0
From: Philly
Yeah, I've been seeing a lot of threads with people having clearance issues using these RRs. Trial and error.
I don't know about the stock rockers flexing. That seems pretty far fetched. Most people have a problem with the stockers' needle bearings falling out if they're used with an aggressive cam, but even that isn't widespread.
I don't know about the stock rockers flexing. That seems pretty far fetched. Most people have a problem with the stockers' needle bearings falling out if they're used with an aggressive cam, but even that isn't widespread.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
