I have a 74 Chevy 1/2 ton 4x4 with an older crate 350. I had been noticing some blue smoke coming out of my exhaust pipes under acceleration or under load. Not at idle. I brought over my truck to Outlaw Boost and owner/operator Jason Haynes took a look at my truck. And after inspection and analysis he noted to me that the Valve stem seals are worn/wearing out. And explaind to me what thier purpose was and what they do. He quoted me $60.00 to replace the Valve stem seals in my engine. After replacement the engine did not emit anymore blue smoke. I must say he was very professional and honest in his work. A very good man to do business with. I highly recommend him 100%. If you have any car or truck problems take it to Outlaw Boost where the job will get done right and fair.