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#41
12-27-2015, 09:15 PM
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Unreal. Goes to show my car will never get a 421 put back in it. I bet your motor sounded great. Great job.
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Should you ever find yourself the victim of others peoples bitterness, smallness or insecurities, just remember, things could be worse. You could be them. Check out my sons blog, www.driftundertheradar.com  |
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#42
12-28-2015, 09:23 AM
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Great job b-man
Sent from my iPhone using Tapatalk
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It's hard to soar like an eagle, when you're surrounded by turkeys! My wife says she'd llike my car a lot more if it wasn't mine.   64 Grand Prix 389 .030, 1.65 Scorpion Rollers, Tripower, RARE Long Branch, Custom Stainless Exhaust and mufflers, 3.90 posi 200-4R. 068 cam. |
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#43
12-28-2015, 10:18 AM
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Very cool!! Any video of it running? What color is the LeMans going to be?
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#44
12-28-2015, 03:53 PM
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Quote:
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#45
12-28-2015, 03:54 PM
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Exhaust Manifolds
I'm going to use these log exhaust manifolds that I scavenged off of a 1964 326 Le Mans in the boneyard, they're the same ones used on the 389 GTO engines for 1964.
The 421 HO was originally installed only in B-body big Pontiacs and used a better flowing long-branch header-style exhaust manifold, but they won't fit my A-body chassis without mods to engine crossmember and frame rails. In the interest of economy and time I'll just have to be happy with these. My engine builder was kind enough to run them through the bead blast cabinet for me. I'll clean them with hot soapy water and treat them with some Metal-Prep, then coat them with some POR-15 manifold grey using a paint brush.   They're a nice free-flowing design for a standard log manifold, especially the driver's side. Later designs lost some of the smooth curves and outlet length.   The passenger side manifold has a heat riser flap assembly that's still in perfect working order.  
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#46
12-28-2015, 06:36 PM
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Very nice Bart. Bet you're lookin forward to the butt dyno.
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#47
12-28-2015, 08:58 PM
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can you run a set of the A body 69-70 ram air manifolds
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#48
12-28-2015, 09:27 PM
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Quote:
However I like the look of the 'correct' 1964 log manifolds better. Starter motor access is just so much nicer too. There's just something so 'right' about seeing early GTO 389 engines (or a 421 that sneaked in there) equipped with the standard log manifolds they all came with.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#49
12-28-2015, 09:37 PM
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have a set of head pipes for those manifolds....small stock flanges to 2 1/2 from pipes very nice...pretty sneaky way to put a big exhaust...id turn them loose...
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Mark.. The Goat whisperer "I spent a lot of my money on booze, crazy women, and fast cars. The rest I just squandered." 
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#50
12-28-2015, 09:42 PM
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Quote:
  
__________________
1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#51
12-28-2015, 10:07 PM
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sweet....very nice parts...i'll prob hang em on the wall and use them sometimes down the road....
id like to hear them on a car...
__________________
Mark.. The Goat whisperer "I spent a lot of my money on booze, crazy women, and fast cars. The rest I just squandered."
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#52
12-29-2015, 05:49 PM
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Awesome thread! Thanks for posting all the info to go along with the pics so newbies like me can work out what is going on
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