I've never had any quality concerns with Marks performance parts but the proof is in the #s.... These 350s are going to make some serious waves here in 2008! My jacked up Silverado is getting a Buick 350 with a prototype single turbo setup so I can keep the girlfreinds niply.
:laugh: :laugh: :laugh: :laugh: My GN was a PRO at doing that :spank: Mark, how much is this setup and can you send me instructions? I have a vertical mill, and there's too much snow here to do much with the Buick. wes
Hello everyone, I am new to the buick seen, and I am glad to see that people are thinking outside the box! I do a lot of NASCAR engine development for a certain manufacturer but I don't have the liberty to say Who... Anyhow, The one bar rocker pedastal that you have built is very similar to what the cup guys use, but they are useing tool steel that is twice as thick, with pedastal mounted rockers. You may find with lifts approaching .700" that the mild steel you are using will move considerably @ high RPM (6000-7000). I would definitely suggest a stud girdle! Great Idea, and nothing wrong with a little R&D to find its limits!
at present we are not useing mild steel. The set I have is stainless for the toughness we are working with Mark and think that we will be using tool steel instead to help with cost of materials and still mantain strength. At the current time I can only think of one guy that would possibly need to look at a different set-up than this and it is Bill on his Procharged 350. We will run this on my sons procharged engine and I am confident that there will be no issue at all. we will spin it to 7000 and have higher than normal spring rates and I am sure that we will be fine. I do plan on putting together a stud girdle for a high rpm application. I will let everyone know how it comes out when we do it I will have dyno numbers for sure.
Bobb, I'd be curious to see what results you get if you did that same test on shaft mount rockers. I would also like to get Marks setup to do a little testing. Would like to see how the bar reacts to 500 - 600# spring pressure. The only drawback I possibly see would be on extreme builds. If you need to use a stud girdle and the custom valve covers you would also need then you may as well stay with the shaft style rockers.
