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Old Jun 9, 2019 | 12:35 AM
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My memory is shot if i ever did know the answers
1. In what year did the 6 quart trap door oil pan start and end?
2. In 1966 427's were listed as having 450 hp at some point they changed to 425 hp. About what car /vin number did they change?
3. Their were basically no knock off wheels for 1963 but were they available for all of 64 production?
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Old Jun 9, 2019 | 07:38 AM
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1 solid lifter engines from 63-65 and 70-72 LT-1 cars got the five quart pan
2 the 450 rating was dropped in Sept of 65 not sure on vin
3 yes for 64 you could get knock off wheels
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Old Jun 9, 2019 | 07:41 AM
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Five quart trap door oil pans started in the late '50's.
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Old Jun 9, 2019 | 10:22 AM
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My "66" big block has trap door oil pan
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Old Jun 9, 2019 | 12:43 PM
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2. There was no change to the engine itself - all that changed was the air cleaner sticker, and no one knows the effective point of the change.
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Old Jun 9, 2019 | 08:39 PM
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I thought they were 6 quart oil pans with the trap door?
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Old Jun 9, 2019 | 08:41 PM
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Originally Posted by Woodie
I thought they were 6 quart oil pans with the trap door?

the FIVE quart pan for SHP had a trap door.

the BB FOUR quart pan also had a trap door.
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Old Jun 10, 2019 | 12:00 AM
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ZR cars to 1972 had the good pan!
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