Re: 70 W 30 rebuild
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 83hurstguy</div><div class="ubbcode-body">The challenge of the roller cam in an Olds is the 5/16" rocker arm bolts. There are two basic options... the first is drilling the expensive/rare heads for a 3/8" or 7/16" stud and adding guide plates. Option 2 is the Harland Sharp 5/16" bolt-on mini-shaft rockers, which are around $450, and good to 350 lbs open spring pressure.
With roller rockers, you'll have to modify/remove the stock valve cover baffles or double up gaskets. Ram Air Restoration makes a 0.200" thick hard rubber gasket that's a nice piece. The stud mount rockers may clear with a short poly lock, but the mini-shaft ones hit the baffles at max. valve lift... went through figuring that out on my old '83 the hard way.
No doubt a roller is the way to go, other than those pesky Pure Stock rules. I'm stuck with the flat tappet for mine. </div></div>
Luke is a wealth of Oldsmobile knowledge:-) (I think he looked over this car at MCACN before it sold to Albert....)
Ryan
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1969 Beaumont 350 Auto White Sold
1969 Beaumont 307 Auto Green Sold
1969 Chevelle SS 396-L35 Auto Blue Sold
1969 Oldsmobile Cutlass 'S' Sports Coupe W31
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