buch1147

Thanks Frosty for you input. Since I Posted this and after your response I had ordered one of the 1.52 rockers to see if this would work. As you know, retailers do not have information on length / height/etc on a rocker arm.  It turns out this rocker is to long and goes beyond the valve stem.  I Did finally find the correct rocker at Kanter.com.  Exact rocker/ rocker ball and 5/16" nut.  #RA44044K.  Thanks again for you input. 

My rocker ratio is 1.5.  Is it that critical or can I go with 1.52 without causing issues ?

The valve covers actually came with the engine. The 287 I had was going to cost $$$$ to rebuild. This engine was rebuilt in California at a speed shop. Right place at right time to pick this motor up!! A/C system is next. Looking at a Hurricane unit. 

Hello forum gents.   New to this forum stuff but looks like a good thing to do.  I have a 55 Chieftain that I have been working on for 6 years.  This is a true old/way hot rod built buy the owner.

No fancy expensive hot rod shops ( couldn't afford them anyway) The interior was done by a upholstery shop and the paint, well that's another story.  Installed a 347 cu. in. 60 over engine with mild cam.

3x2's original carbs.  Tranny  cam out of a 68 corvette anniversary TH350. (don't think its any different than other th350's. Had to build engine to tranny mount.  Installed Power Steering 605 gear box. Built Bracket assembly for early model P.S. Pump.   

Look forward to sharing and hopefully learning more about these great Pontiac Cars.  

buch1147

Thanks Frosty for the help.

Having a hard time finding the correct rocker arm to fit my 347 engine.  All the rockers I find are for 7/16" studs. The one I need is 1.5 ratio and 3/8" stud.  I'm using 5/16" poly locks.  I find many of these for a chevy engine 265/350 etc but not sure if they measure out the same.   appreciate any help. 

buch1147