Recently in another thread, JWalker mentioned that the stamped rocker systems leave you losing a bit of valve lift. I, being the El Cheapo that I am, tried to use one of these systems on my 425 project. At first I thought the low valve lift that I was measuring was due to the fact that I needed a different length attachment for my dial indicator to line it up properly with the valve stem. Well, now I have said attachment and the valve lift is still pitifully low! About .100" low. That's way too much for my liking so I'm returning the rockers and going for the cast system instead. It's more money, but nobody steals my lift and gets away with it! Just thought I'd let anyone out there considering using these rockers know what's up with them. They are advertised as 1.7:1 ratio but measure in at more like 1.45:1. Now I just hope I still have the right piston to valve clearance with the increase in lift.
I'm seriously concidering putting my stamped set on eBay and going with the cast set-up also. They're an improvement over the stock rockers but not very good from a performance standpoint.
I'm just sending mine back to Al at MTS and getting the cast version from him. Did you notice a lack of lift also? Or you're taking our words for it and that's enough for you. I wish I'd have known about this before I got involved with them.But then, I know some men I could say the same thing about.
I'm just sending mine back to Al at MTS and getting the cast version from him. Did you notice a lack of lift also? Or you're taking our words for it and that's enough for you. I wish I'd have known about this before I got involved with them.But then, I know some men I could say the same thing about.
I didn't measure anything......just going off what I've heard and read. I was told that the cast ratio would work much better with my cam.
Really pays to do your homework, doesn't it! I know not all guys are bad. I figure men are like engines. Some are really strong, but use up lots of gas and need lots of maintainance, some are weak, but get good milage; some are new and need to be broken in; some are old but still run great and strong; some are fun to drive and some are a drag; and some just don't work right from the moment they're assembled to the moment you give it the heave-ho....
Really pays to do your homework, doesn't it! I know not all guys are bad. I figure men are like engines. Some are really strong, but use up lots of gas and need lots of maintainance, some are weak, but get good milage; some are new and need to be broken in; some are old but still run great and strong; some are fun to drive and some are a drag; and some just don't work right from the moment they're assembled to the moment you give it the heave-ho....
I guess the same could be said about some females.
If my research is correct, Two "other" engine rocker can be adapted to the big Caddy;
1) A Buick rocker (Probably the Stamped one talked about) And this is the one with less ratio then orginal better at RPM
2) The Ford 352 - 390 (FE) engine rockers are shaft design and adaptable to the Caddy (I believe these are Cast Rockers with a higher then stock ratio.
Then there's the Custom built $1,000 type
I would be interested to see if anyone has modified the Ford rockers
Now, Now.. You wouldn't be wondering if I'm building the engine myself because I'm a "girl" , would you?
