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Old 11-20-2022, 02:17 AM
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Default 1973 Grand Am 455 Super Duty

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Old 11-20-2022, 01:35 PM
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Thank you, very interesting read,
always saddens me that while pontiac folks have access to
so much great info, the same corporation has made info for other makes
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Old 11-21-2022, 12:56 AM
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Default Sd-455...

Great article and story...

Interesting time at the end of the muscle-car era....big motors still available [minus the compression]...net HP ratings...crash bumpers and catalytics on the way.

Thanks for sharing..

02 Berger 380hp #95
Lots of L78 Novas
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70 Orange Cooler
69 Camaro
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Old 11-21-2022, 01:09 AM
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What a great story,…amazing
Lately into Beaumont SD's, 66,67,68 and 69 , including a 69 2 Dr Post Beaumont , an L78 2 Dr Post Chevelle LS6 Chevelle's, LS6 and L78 El Camino and Camaro fan ! Also 2 Cdn Documented COPO's, a COPO Camaro and COPO Chevelle Love GM Products
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Old 11-21-2022, 07:26 PM
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Wow - thanks for sharing
Jake Dykstra

Dykstra Motorsports
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Old 11-22-2022, 01:29 PM
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When you think you've seen it all....you haven't. Wild.
I ain't nobody, dork.
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Old 11-22-2022, 01:47 PM
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Amazing how finding that engine came together. Hopefully the body will surface. You just never know.
1969 Camaro RS/SS Azure Turquoise
1969 Camaro Z/28 Azure Turquoise
1984 Camaro z/28 L69 HO 5 speed
1984 Camaro z/28 zz4 conversion
1987 Monte Carlo SS original owner
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Old 11-22-2022, 02:32 PM
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----I ordered a 73 SD Grand Am new. I was told by the dealer (Pontiac and Buick) in Medina Ohio that it was available. Dark blue with blue int 4-speed. I waited and waited. The dealer told me to be patient, but I think I learned from one of the salesmen that I would never get it. Why I ordered a new Riviera Gran Sport is still mystery to me. Kept it for about 6 months and traded it on a left over 72 Trans Am at Knafel Pontiac that had been Bill K's wifes driver. Way happier with that!.....Bill S
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Old 11-22-2022, 03:27 PM
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This actual engine was just shipped to Australia and is destined to go into the prototype SD455 Trans Am magazine test car. It was found down under ten years ago by a guy who just happened to find a used 73 T/A and wanted to restore it. When he got the PHS he freaked out (justifiably).

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Old 11-22-2022, 11:48 PM
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I wonder if this is how there were a couple of "Developmental" 1971 LS-6 Chevelle SS's....
Previous owner of:
1970 Chevelle SS 454/M22 w/crate motor LS-7
1970 El Camino SS 454/M22 LS-6
1970 Camaro Z-28/M22
Currently owned:
1988 Monte Carlo SS Crate LS7/T56
2011 Corvette Z06 all stock
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