Thread: Performance upgrades with standard th400 torque converter
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Old 07-06-2021, 01:25 PM
JLMounce JLMounce is offline
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Have you done a cranking compression test? That'd give a bit of information on what's in there now.

I'd almost bet that it pumps pretty high and that it may have a smallish XE style cam in it.

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1969 Pontiac Firebird
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