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Old August 7th, 2018, 10:24 PM   #1  
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New Oldsmobile Enthusiast

Hi, I'm new to the forum. I have recently purchased my first Olds muscle car. A 1970 Cutlass S with a 350 auto trans. Unfortunately the engine froze and cracked at some point in the past. I have decided to replace the original engine with a 455. I own and operate a small engine performance shop where I have access to a complete engine machine shop including flow bench and chassis dyno. In the past I have built a few Oldsmobile performance engines but I have never built one for myself. I am very interested in learning as much as I can and applying it to my own custom 455 build. I look forward to build and testing some of the ideas and tricks that I have applied to other makes of engine in the past. I intend to share as much of that information with everyone and learning as much from you guys in the process. Thanks
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Old August 8th, 2018, 04:37 AM   #2  
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Welcome! Pics of you new Olds would be spectacular! You've come to the right place, numerous folks here are way happy to help you with your questions, I know they've helped me alot.

Since you are planning on upgrading your car to a 455, you might also consider upgrading the trans to a TH400.

BTW, assuming your username reflects one of your rides, what year Z06?
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Old August 8th, 2018, 05:45 AM   #3  
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Welcome to the site, post some pics of your cars.
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Old August 8th, 2018, 04:39 PM   #4  
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Welcome to the group... Good luck with your engine project...
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Old August 8th, 2018, 04:43 PM   #5  
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Im having loading pics. I will post them as soon as I figure out what I'm doing wrong.
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Old August 8th, 2018, 04:44 PM   #6  
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Looks like I got lucky. Something worked.
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Old August 8th, 2018, 04:48 PM   #7  
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I owned a 2002 Z06 before I got married.
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Old August 8th, 2018, 05:40 PM   #8  
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To address the trans. I already rebuilt the TH350 with a performance kit before I found the crack in the 350 block. If i locate a TH400 before the engine is complete I will replace the TH350. If not I will use the TH350 until it fails.
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Old August 9th, 2018, 11:25 AM   #9  
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Sounds like a fun project. The th350 should hold up fine and if it does break down then consider the swap would be my 2 cents. I am also a casual hobbyist so take my 2 cents for it's TRUE value, 0.

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Old August 9th, 2018, 11:29 AM   #10  
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Old August 10th, 2018, 05:50 AM   #11  
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beautiful looking cutlass!
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