Lo all, I grabbed the roller rockers rockers off a 93 bonnyville a month ago or so and am now ready to put them in. Really I hope to clean up a bit of rocker noise. Since I have to replace a couple rockers and possibly rods if they are short then I might as well go roller. The tappet area is a bit worn on my originals at 275,000kms on the front driver side heh. I know they need to be drilled out a bit that will be taken care of by my brother he will stay 15mins late for me where he works at a machine shop and that part will be done.

My only question is wich guide plate do I use now for the rockers to sit on? I notice the bottoms are square on L27 and fit in the guide plate nicely it has square holes in it for them to go through. LN3 they just sorta bolt over hard to explain they are different newho. The LN3 one seems to have channels the rods go through as well, where as L27 does not. Cant see how that part would make a difference, only the shape of the bottoms and guide plates. SO... if anyone has/had this done and if you know what guide plate to use please chime in. THX!

If I am not mistaken, the rockers will not work. Let the gearheads chime in, as they know what the situation is.

Those rockers will not work on your car.

You have the wrong cylinder heads and rocker bolt thread size.

No loss, you're only talking about 5hp anyway.

arent the head almost exactly the same? couldnt you swap the heads and then have roller rockers that way?

I can't offer an opinion on the compatibility of those heads. But even if they were compatible, it sounds like an awful lot of work for 5hp.