Quote:
Originally Posted by 62posbonny
Go over to classicoldsmobile.com where one of the builders claims to have sold 550 pairs of Speedmaster's Olds heads and find one post where someone claims a seat has fallen out. You would assume with even a 1% failure rate on valve seats, the forums would explode with naysayers. Bad gas travels fast and all.
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I've seen several pairs of Speedmaster/ProComp cylinder heads for the Oldsmobile engines. None of them had the casting flaw in the valve bowl area that might cause a valve seat issue that we are seeing in the Pontiac castings. I'm not suprised to hear there haven't been any reported failures or concerns.
Have any of them the Olds guys had complaints with those heads? I know the Rocket guys don't have a high opinion of them.