Quote:
Originally Posted by mgarblik
Some people like the "solid" attachment of the "Butler washer/cup" vs the factory set-up if they are not going to run a mechanical pump. The factory set-up can cause a light rattle noise without the fuel pump arm preload riding on the outer cup. Generally, not a deal breaker either way.
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This!. I have one on my latest 455 in case I run a mechanical. 400 in the 81 is stockish so a mechanical but all my others use an electric pump.
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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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