Rocker arm recommendations
Thread Starter
jobberone
Joined: Aug 2003
Posts: 2,062
Likes: 8
From: Kailua Kona HI
Rocker arm recommendations
I'm replacing my heads on my 347 TT setup. Going to AFR 230s which I can't find out much on. First has anyone any experience with the AFR 230 heads? Second I need to know what rocker arm to use. I can get a better price on Jesel rockers but I've heard they weren't best for my app. My only other alternatives IMO are the Comp cam 1500 or the same T&D rockers. Something about shims and the Jesel rockers with the AFR. Some techs: lift 620s. rev limit 7000. shift point 6800. Springs I don't know height yet as they are supposedly going to be custom springs. Probably 1.74 or so. Seat pressures in the 180 range intake with opening pressure about 540. Boost limit 20-22. Rockers 1.7 ratio. Normal hyd cam bearings. Caddy lifters.
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
I have modified 205's and went with the Yella Terra rockers. For any of the rockers mentioned, you need to ensure the wipe is narrow and centered on the valve stem before measuring for the pushrod length. With the YT's, I got the wipe down to 0.045" width of wipe pattern.
Instructor
Joined: Aug 2010
Posts: 154
Likes: 2
From: Genesee Co Michigan
I too went with Yella Terra's. I think they are the best bang for the buck. Just got my set Wednesday just waiting for a warmer day to put them on. I helped put a set of 1:8 on a C6 without a cam and they quieted the valve train noise quite a bit. I have a Lingenfelter with a high lift cam and it sure is noisey, hope to quiet it down with the shaft mount YT's. Although the stock rockers are tough they do have a lot of slop and make noise.
