I am looking to see where I can find roller rockers for my '65 425? Can I just go to summit and order somefor a 425? or do I have to order specific ones because of the different bank angles or does it not matter?


Any info would be great........

 

If it matters I have A heads on the car, also would I have to run a taller valve cover?

 

As you may have ascertained, your A heads are oddballs. They do have 3/8" studs already installed (as opposed to the 5/16" bolts on all other BBO heads). If you're lucky, you can buy 1.6:1 roller rockers for the 3/8" studs and be done with it. Hint: small block Ford rollers work on Olds motors. The cam bank angle has no affect on the rockers. The valve cover clearance will depend on the rockers you pick.

 

As "Joe" has said, you will need to get rocker studs. The studs should be 3/8 top with 3/8 bottoms. Then order small block "Ford" roller rockers. You will have to measure for the push rods, to make sure you get the right height. Also you will need guide plates.
The other way to go is with the roller rockers mounted on a shaft. They come two rockers per shaft. A bit more money. You will have to get reducers to screw into the 3/8 hole with a 5/16 inner thread. That way they bolt in and you do not need guide plates. Harlin Sharp makes these rockers.

Gene

 

Thanks for the info any particular year SBF to look for?

 

http://store.summitracing.com/partde...6&autoview=sku

Would these work? Also what else would I need to buy to put these in? push rods? guide plates? lifters?


Thanks

 

Those are roller TIPPED rockers, not roller rockers. Roller rockers pivot about a shaft, hence "roller". Look here

 

Hmmmm.......I see now I just have to find those to fit on a 3/8" stud

 

Here's what I put in my 67 425:

Comp Cams Mag Rods, Mag Lifters, Mag Rockers, Guide Plates, BeeHive Springs. Bolts up to 3/8".

 

Do you by any chance have part #'s ?

 

High Energy Hyraulic Lifters - 852-16
Beehive Springs (Olds) - 26995-16

Magnum Roller Rockers - 1442-16
Magnum Oldsmobile Stud 3/8" - 454216
Magnum Push Rods (stock Hardened) - 7582-16 (length 9.547")
Olds Magnum Guide Plates 3/8" - 4852-8

Comp Cams Kit (Rockers, Guide Plates, Studs, Push Rods) - 1442 -kit

Double check #s and application, be careful if your getting a cam (39 degree OR 45 degree cam bank angle). The web-site is www.compcams.com use the search tool.

 

Awesome thanks!!

 

Do you think that I would need to purchase those lifters and springs? I just put new lifters in the motor last winter when the motor was rebuilt?

 

I can't give you good advice on that, hopefully someone else can weigh in.

 

I have read that the purpose of a beehive spring is to minimize binding with higher ratio rockers. Since most Oldsmobiles already use 1.6:1 ratio rockers stock and don't use beehive springs; if you are not going with anything more severe it would seem that you wouldn't need them. I haven't used them or needed them in my experience but I have never used rockers with a ratio greater than stock.

 

Thanks for the info, the new rockers are a 1.6 ratio rockers too. I might try and see what happens with the stock springs and such.

 

What ever you go with , make sure you have proper rocker arm contact with the tip of the valve , or you may wear your valve guides prematurely.