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Forum: Pontiac - Boost

04-14-2023, 05:15 PM

Replies: 21

Butler Procharger kits

Views: 6,351

Posted By grandam1979

Just my 2¢ when my buddy went from a 541 na...

Just my 2¢ when my buddy went from a 541 na street engine to the 464 he didn’t change anything on the cooling system that I know of I will ask him to be sure.

Forum: Pontiac - Boost

04-13-2023, 08:06 PM

Replies: 21

Butler Procharger kits

Views: 6,351

Posted By grandam1979

My buddy has one from Luhm on a 4000 pound 64 gto...

My buddy has one from Luhm on a 4000 pound 64 gto 464 with non ported speedmasters streetcar he’s well into the 9’s he’s hoping for 9.3 or better this year he made a couple updates over winter.

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