That's the ticket. I'm not sure what to expect to be honest. Even if my current motor is 150Hp and this 350/290 only hits 220 hp, that's still significant I would expect. If I can find someone nearby with one of these motors I'd be able to see for myself.
If there is a drawback, it's the flat tappet cam, so you'll need a bottle of additive with each oil change. Other than that, they're just fine as long as you've got realistic expectations. There's a reason GM has sold millions of them.
ZDDP a zinc additive the was removed from oil because it damages catalytic converters. It protected the flat tappet cams from wear. Everything is roller cams now because the removal of ZDDP from engine oil.
ZDDP a zinc additive the was removed from oil because it damages catalytic converters. It protected the flat tappet cams from wear. Everything is roller cams now because the removal of ZDDP from engine oil.
Other big issue is that most of the good lifter companies either went under or stopped making flat tappets, leading to over seas sources and their well known quality issues.
Yes, not only a flat cam but good bye bearings and oil pressure. I went from very good oil pressure to very poor when my cam went flat. The cam bits have to go somewhere. Going roller for precisely this reason, it sucks. Good thing it was a $120 motor. The 290 hp has a pretty aggressive flat tappet cam.
All you need is an oil that's intended for older vehicles. I use Joe Gibbs 'DRIVEN' oil. They call it 'racing oil' but whatever. I have it in my dually (BBC w/flat tappet hyd cam) & used it in the car (SBC w/flat tappet hyd cam). I don't remember but it may not be CAT-converter friendly though. We use Rotella T4 on the Model-A's.
Not really, 222/222 duration is far from smogger stock, a lot for 8 to 1 compression. I would think they throw on stiffer valve springs with that cam. I would not run SP oil. I had a 214/214 cam go flat FYI.
GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.