#1  
Old 09-19-2018, 04:46 PM
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Default 1978 TA 6.6 engine

For sale is complete running Pontiac 400 engine. The shortblock was rebuilt by Jasper and has a few thousand miles on it. It never smoked, used oil or had any issues other than a rear main seal that dripped a little. The heads have just been rebuilt with new valve guides. The engine is being sold as is with the parts included in the pictures. The block code is X7 you can't read the date on the block but it is the preferred XX. The heads are correct 6X-4 and dated D268.

$2500
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  #2  
Old 02-05-2019, 11:34 AM
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Bump

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Old 02-05-2019, 12:40 PM
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For you 78 guys out there this is the correct code for the TA 6.6 220 hp in an auto car!

Paul are both heads dated close to the same? The X7 I picked up years ago had different dates on the heads. I picked it up if I ever wanted to make mine as ordered as I had just missed getting the 220 HP with an auto by 1 month.

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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
  #4  
Old 02-05-2019, 04:10 PM
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Quote:
Originally Posted by Skip Fix View Post
For you 78 guys out there this is the correct code for the TA 6.6 220 hp in an auto car!

Paul are both heads dated close to the same? The X7 I picked up years ago had different dates on the heads. I picked it up if I ever wanted to make mine as ordered as I had just missed getting the 220 HP with an auto by 1 month.
Hi Skip, I'm pretty sure they are the same date.... I'll check tomorrow. That sucks about missing the 220hp engine. I owned a white 78 that had the 220 engine and my buddy thought it may have been the last one to make it through. It had the latest date of any he had come across..... fantastic cars for sure!

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Old 02-06-2019, 08:55 PM
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Both heads are dated D268

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Old 02-06-2019, 09:44 PM
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Quote:
Originally Posted by PAUL K View Post
Both heads are dated D268
On 350 builds & W72 builds, its odd to see both 6X-4's the same date, have pulled TONS of 6X-4's.
Believe I have a set of 6X-4's the exact same date, both came off a late assembled '78 X7 out of a Y88, I've yet to find a 6X-4 cast any later.

Notice anything interesting about the valve spring retainers?

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Last edited by 'ol Pinion head; 02-06-2019 at 09:50 PM.
  #7  
Old 02-07-2019, 11:43 AM
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Notice anything interesting about the valve spring retainers?
Nothing other than they seem to be more of a gold color than anodized black..... should I have?

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Old 02-07-2019, 02:40 PM
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Interesting, I think my motor I bought(along with a 73 SD intake) they are a month or so apart. Who knows how original it is as it is painted black.

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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
  #9  
Old 05-16-2019, 08:06 AM
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Nice good running engine....offers?

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Old 05-18-2019, 12:08 AM
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Do you know what pistons and cam they used?

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Old 05-18-2019, 11:15 AM
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Paul, call me i'm interested in the 400, (404) 405-5161 Russ

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Old 07-30-2019, 08:19 PM
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Bump

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Old 08-21-2019, 08:24 PM
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Does it have the 5 motor mount holes? I know the 557 blocks don't but not sure about the XX block.

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Old 08-21-2019, 09:51 PM
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Quote:
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Does it have the 5 motor mount holes? I know the 557 blocks don't but not sure about the XX block.
I can check. The XX blocks have the bosses not sure if all five holes are machined.

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Old 08-22-2019, 01:27 PM
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Quote:
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Does it have the 5 motor mount holes? I know the 557 blocks don't but not sure about the XX block.
All five motor mount holes have been machined and threaded. So this engine will accept two bolt and three bolt mounts

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Old 08-22-2019, 01:50 PM
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Cool. Might know someone who wants it.

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Old 08-22-2019, 05:24 PM
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Cool. Might know someone who wants it.
😎 Cool

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Old 11-03-2019, 08:49 PM
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Sold and thanks PY!

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