Forum: 70-73 Firebird & TA TECH
Yesterday, 07:35 AM
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Replies: 445
Views: 105,821
Cool! Another group of stamps...pretty tight...
Cool! Another group of stamps...pretty tight tolerances on your YZ Mike.
It's funny that Oldsmobile's 1970 performance brochure talked about "select-fit" pistons for 'factory blueprinting" their...
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Forum: 70-73 Firebird & TA TECH
06-21-2024, 08:04 AM
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Replies: 445
Views: 105,821
Jonny, Interesting to see another uncut block...
Jonny, Interesting to see another uncut block with the stamps. I wanted to document the factory stampings before they get obliterated when the decks get cut. I'm sure some to the deeper stamps will...
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Forum: 70-73 Firebird & TA TECH
06-21-2024, 08:01 AM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-20-2024, 12:50 PM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 08:32 PM
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Replies: 445
Views: 105,821
Mike, we haven't checked the cylinders yet for...
Mike, we haven't checked the cylinders yet for roundness, but that's a great idea to measure them. The cylinder pressure was pretty good for a 54 year old engine at 175 - 185 psi, with one outlier at...
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 07:36 PM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 07:34 PM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 05:01 PM
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Replies: 445
Views: 105,821
Hey Craig! We've taken many 400 blocks to .030...
Hey Craig! We've taken many 400 blocks to .030 and .040 over without problems...maybe a block or 2 to .060 over without issue either. These were all earlier pre-557 block castings. If you need to go...
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 01:16 PM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 12:57 PM
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Replies: 3
Views: 136
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Forum: 70-73 Firebird & TA TECH
06-18-2024, 07:59 AM
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Replies: 445
Views: 105,821
Mike & John, Nope, no audible detonation and...
Mike & John, Nope, no audible detonation and nothing on the plugs (molten aluminum). Now, I did drive it gently the only trip it went on (to the 2021 TA Nats...maybe 700 miles round trip). The soft...
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Forum: 70-73 Firebird & TA TECH
06-17-2024, 07:57 PM
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Replies: 445
Views: 105,821
RAIII Rebuild Update
Dan tore down the YZ RAIII engine today and found it to be very clean inside from excellent care the past 54 years and that it had never been opened up before. It had factory intake manifold gaskets,...
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Forum: 69-71 Judges only TECH
06-14-2024, 10:24 AM
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Replies: 8
Views: 434
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Forum: 70-73 Firebird & TA TECH
06-10-2024, 12:52 PM
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Replies: 445
Views: 105,821
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Forum: 69-71 Judges only TECH
06-09-2024, 07:32 PM
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Replies: 8
Views: 434
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Forum: 70-73 Firebird & TA TECH
06-09-2024, 07:22 PM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-08-2024, 11:42 AM
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Replies: 445
Views: 105,821
I need to make a correction in my earlier...
I need to make a correction in my earlier post...the magazine was High Performance Pontiac (HPP), not Pontiac Enthusiast (sorry Don) as I stated. Dan built that 455 to '71 455HO specs (block is a YC...
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Forum: 70-73 Firebird & TA TECH
06-08-2024, 11:29 AM
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Replies: 445
Views: 105,821
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Forum: 70-73 Firebird & TA TECH
06-08-2024, 11:26 AM
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Replies: 445
Views: 105,821
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Forum: 70-72 GTO Tempest & LeMans TECH
06-08-2024, 10:53 AM
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Replies: 3
Views: 235
Mike, I'm seeing a "C" hiding under the 'E'...
Mike, I'm seeing a "C" hiding under the 'E' now...Roger pointed out the "3" at the start of the 6-digit sequential number is usually reserved for B--bodies, so a second strike against it being a true...
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Forum: 70-72 GTO Tempest & LeMans TECH
06-08-2024, 08:40 AM
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Replies: 3
Views: 235
455HO Question for the PY Family
The 455HO that is temporarily going in the ’70 Formula has ’71 197 heads, but the block is a ’72 YE 455 (J201 casting date) which, according to the ’72 service manual, is for a ’72 F-body 455HO...
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Forum: 70-73 Firebird & TA TECH
06-08-2024, 08:28 AM
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Replies: 445
Views: 105,821
RAIII Engine Rebuild Time
We finally got the time (and the inspiration) to pull the RAIII 400 out of the Formula. It developed a slight bottom end knock when coming back from the 2022 TA Nationals and been parked since then....
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Forum: THE LOBBY
06-08-2024, 07:49 AM
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Replies: 663
Views: 49,211
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Forum: 67-92 Firebirds & Trans Ams FOR SALE
05-28-2024, 12:49 PM
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Replies: 15
Views: 1,240
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Forum: 69-71 Judges only TECH
05-27-2024, 12:55 PM
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Replies: 13
Views: 3,806
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