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#21
11-04-2021, 12:49 PM
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It was all the bolts on the outside of the head that felt looser. The ones inside the rocker covers were tighter.
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69 Firebird 472, KRE 85cc, Victor, 850xp, TH400, TSP 9.5" 4800, 3.90 10 bolt, Viking DA rears, QA1 single fronts, 3558lbs. best to date 10.90 @123 |
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#22
11-04-2021, 07:08 PM
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My old 72 455 HO block the holes were not deep enough on the outside for the Edelbrock bolt to get tight without 2 washers. No problems on my 70 455 block.
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Skip Fix 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 |
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#23
11-05-2021, 03:30 AM
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Skip thanks for that I'll double check the depth before assembly
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69 Firebird 472, KRE 85cc, Victor, 850xp, TH400, TSP 9.5" 4800, 3.90 10 bolt, Viking DA rears, QA1 single fronts, 3558lbs. best to date 10.90 @123 |
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#24
11-05-2021, 09:55 AM
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It was weird not all of them, but they were on the outside. Edelbrock also on their bolt torque specs uses a different value on the shorter bolts whereas the ARP instructions do not, but Edelbrock uses the same ARP bolts..
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Skip Fix 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 |
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