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racesloth · 03-27-2017, 04:32 AM

I started hand porting the LSA heads last night. I am not looking to make gains near a CNC port, just a good clean up (remove rocker stud buldge, swirl dam, soften chamber, polish and port match. Stock LSA heads flow 290cfm at .600 lift and stock LS3 are around 310cfm at the same lift. So it I can get the homeported LSA heads to 320-330 I will call it a day. Putting the LSA heads on just to take advange of the stronger casting and use higher quality valvetrain parts.

I will let the YSi push the air through...

03-27-2017, 04:32 AM	#16
racesloth Dan Drives: 2010 Camaro 2SS IOM Join Date: Nov 2013 Location: Georgia, USA not the other one Posts: 1,041	I started hand porting the LSA heads last night. I am not looking to make gains near a CNC port, just a good clean up (remove rocker stud buldge, swirl dam, soften chamber, polish and port match. Stock LSA heads flow 290cfm at .600 lift and stock LS3 are around 310cfm at the same lift. So it I can get the homeported LSA heads to 320-330 I will call it a day. Putting the LSA heads on just to take advange of the stronger casting and use higher quality valvetrain parts. I will let the YSi push the air through... __________________ Dan 2010 IOM SS YSI-B, Pat G Cam, Ported CTS-V Heads, ARH LTs MBRP 3" exhaust http://www.camaro5.com/forums/showth...&highlight=ysi Last edited by racesloth; 05-08-2017 at 07:34 AM.