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Aaron Allison · 05-05-2009, 09:18 AM

Manns uses the new GMPP Large Port Vortec Bowtie Head

GMPP #25534446 fully assembled and #25534445 Bare

They have a 225 cc intake port and a 77 cc exhaust port with a 65 cc chamber

05-05-2009, 09:18 AM	#9
Aaron Allison Member Join Date: Jun 2004 Location: East Palestine, OH Posts: 219 Likes: 4 Liked 150 Times in 43 Posts	Re: Help a super stock rookie Manns uses the new GMPP Large Port Vortec Bowtie Head GMPP #25534446 fully assembled and #25534445 Bare They have a 225 cc intake port and a 77 cc exhaust port with a 65 cc chamber __________________ Aaron Allison 395 STK, 395 SS, 3395 SC