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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#40033 08/12/2002 9:07 PM | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | I read a great article on rings in an engine building mag. I'll read it again and quote here.
BTW, I ordered a set of Patrick's rings for my 235. The top ring is coated (moly?) and the 2nd ring is cast iron. Don't file a moly ring.
The chrome rings are the "racing" rings that are bad for a street application. They have less cylinder tension for less friction at high RPMs for racing. Their oil control is poor, so thats why you see some good-running street hotrods leaving a smoke cloud. Wrong piston ring application.
There is a separate issue with running hyperuetic pistons. The gap on the #1 compression ring has to be set larger than stock with a hyper piston. But you're prolly running cast street slugs, right?
Chip
Preaching the Hot Rod Gospel according to the 4-stroke apostles:
Suck, Squish, Fire and Fumes
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