WebSep 23, 2024 · GM flat tappet production engines had issues with wiping cam lobes. I have first hand experienced this in the Small Block group and the Iron Duke group. sometimes it could be blamed on the lifter bores … WebEngines with flat-tappet cams have extremely high pressure loading at the contact point between the lifter crown and the cam lobe. According to Mark Ferner, team leader for …
Are the new flat tappet cams really that bad of quality?
WebJan 24, 2024 · 1,453 Posts. #17 · Jan 24, 2024. I had installed AFR 227 heads and comp cam 280 FT. I had no issues with comp cam. I did issues with AFR where the retainer sheered off and sucked the valve in the cylinder. luckily the piston pushed the valve back up and got stuck. The piston had a tiny mark from the valve. WebWanted to make this video to clear up any confusion on the use of a flat tappet Camshaft. Of course if you have the money I would recommend going to a roller... shraders clothing
Lunati Voodoo cams & valvetrain noise? Chevy Nova Forum
Web1. Use a dedicated break-in oil that’s specifically designed for flat-tappet camshaft break-in. 2. Use mineral-based engine oil (preferably a nondetergent oil in the 30W or 10W30 range), plus a 16- to 20-oz. bottle of specialty ZDDP additive. To provide long-term protection for a flat-tappet camshaft: 1. Use a specialty engine oil that ... WebJul 1, 2010 · EO/IC rule (Exhaust Opening and Intake Closing). Set the intake valve lash when the exhaust valve is beginning to open. This will put the intake lifter at the base circle which is where you want it to be. Then set the exhaust valve lash when the intake valve is about halfway down on the closing side. Be Consistent. WebJul 24, 2024 · A flat tappet engine with higher than stock valve springs should have 1000 to 1200 PPM ZDDP. There are oils for this or you can play chemist with an additive. Racing type oils do not have the proper additive for street driven engines. The C2 and C3 Corvette enthusiasts have debated and researched this extensively. shradh calculator