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piecesparts · 07-12-2006, 10:32 AM

I am taking my TPI unit and installing a set of vortec heads and a different base to get the better flow characteristics of the vortec. This along with the rocker arm update and bigger flow tubes will make around 300+ HP and change the flat powerband profile to a broader band.

07-12-2006, 10:32 AM	#9
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: '87 4.3 TBI to 5.0 TPI from '87 Firebird I am taking my TPI unit and installing a set of vortec heads and a different base to get the better flow characteristics of the vortec. This along with the rocker arm update and bigger flow tubes will make around 300+ HP and change the flat powerband profile to a broader band.