Pontiac - Street No question too basic here!

          
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Old 05-02-2024, 02:09 AM
b-man's Avatar
b-man b-man is offline
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When I converted my ‘64 to TH400 all I did was move the crossmember back and drill 4 new holes for the 2 hold down brackets. Those 2 brackets retain the rubber insulators that cap the ends of the crossmember. The frame doesn't have a perfectly flat area where the rubber insulators nest, but it works fine.

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1964 Tempest Coupe LS3/4L70E/3.42
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2002 WS6 Convertible LS1/4L60E/3.23
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Old 05-02-2024, 07:35 AM
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Quote:
Originally Posted by b-man View Post
When I converted my ‘64 to TH400 all I did was move the crossmember back and drill 4 new holes for the 2 hold down brackets. Those 2 brackets retain the rubber insulators that cap the ends of the crossmember. The frame doesn't have a perfectly flat area where the rubber insulators nest, but it works fine.
My experience also with a '65.

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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
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